PANASONIC TX-29AS10C YEAR 2001.

The PANASONIC TX-29AS10C is a 30 (29) inches (71cm) 4/3 color television with real flat screen and
was the first model series using the ITT/MICRONAS MEGAVISION CHIPSET FROM THE ITT DIGIVISION DIGIT3000 TECHNOLOGY FAMILY. 

PANASONIC TX-29AS10C Was A top set from PANASONIC with Digital Scan 100HZ technology.,display system with increased field frequency ; digital scan converter means including field-memory means supplied with an input video signal of an interlaced television system having a selected plurality of fields per second different from PHILIPS 100HZ scan system.

The television receiver has an alphanumeric display  which appears on the picture tube screen, to give the user data on the tuned channel number, colour settings and other operating data. The digital processor which generates the characters for display also controls the channel setting, etc., under the control of a digital remote control unit . The processor  has an associated memory circuit  for permanent tuning back up. The control of the capacitance diode tuner  is achieved by the processor  altering the dividing factor of a feedback loop to a phase/frequency comparator . The other input to the comparator is a divided frequency from a quartz oscillator.

The PANASONIC TX-29AS10C  is A 100HZ frame rate TELEVISION In a known arrangement, the frame rate of a television signal is doubled by using a field store. In a first operating mode, each field of the television signal is entered into the field store in this arrangement and read out twice at twice the frequency. In a second mode, only every second field is entered into the field store and read out four times at twice the frequency. In an arrangement for converting an original picture signal representing a sequence of frames, each of which is composed of two interlaced fields, into a converted picture signal which has a double field frequency with respect to the original picture signal, is for doubling the field frequency, for the purpose of noise reduction, motion compensation and line flicker reduction.

The Quintrix CRTs:
 Tube Technology Panasonic has introduced several improvements to its Quintrix tubes, including the use of Super Pigment Technology. This involves adding middle gold pigment to the green phosphor. According to Panasonic this enhances the green colour reproduction. Use of a slight- ly tinted front glass reduces the ambient light reflection,   In the latest Quintrix tubes the scan -velocity modulation coil is integrated with the deflection yoke. Also enabling higher brightness and contrast levels to be achieved.

 The contrast level improvement is, in comparison with previous tubes, 15 per cent. A new configuration results in an oval electronic lens whose calibre is 1.7 times larger than that of a conven- tional lens system. This gives better edge focusing and sharper centre focusing. A new scan -velocity modulation coil varies the horizontal deflection field, again to improve the picture sharpness. The new coil has been integrated with the deflection yoke , giving more precise control of the horizontal deflection field. With a wider and flatter screen the electron beams suffer much distortion as they pass through the deflection fields. This effect can be reduced by making the vertical diameter of the electron beams smaller. A quadruple lens system and a new, rectangular control grid are used for this purpose. The reduced spot size gives a 20 per cent increase in sharpness compared with previous tube technology. The coma free yoke has special coma correctors to compensate for the barrel shaped magnetic field. As a result the RGB spots are more precise. Finally a new shadowmask has greater curvature, deflecting much of the electron beam energy.

Panasonic reintroduced its Quintrix picture tube technology, first launched in the Seventies, in Europe in 1996. The technology was initially used in 25 and 32in. CRTs. in 1997  there were plans to adopt it for a much wider range, from 21in. to a mighty 36in. widescreen tube (Quintrix Wide). Quintrix employs a number of technical features that contribute to improved picture quality. One of these is specially treated pigmentation for the red and blue phosphors. As a result, ambient light of the same colour is reflected while ambient light of other colours is absorbed, giving a fifteen per cent contrast improvement. In addition, red and blue phosphors with EBU (European Broadcasting Union) colour points have been introduced. These were normally used only in broadcast monitors, and have a higher colour purity. Quintrix 4:3 aspect ratio tubes employ a Quadrupole In -line Gun (QIG) and a coma -free deflection yoke to give a twenty per cent increase in picture sharpness.

 The PANASONIC TX-29AS10C  features also Beam Scan Velocity modulation.
When the phosphor screen of a video signal reproducing apparatus, such as, the screen of the cathode ray tube in a television receiver, is scanned by an electron beam or beams so as to form a picture or image on the screen, the beam current varies with the luminance or brightness level of the input video signal. Therefore, each electron beam forms on the phosphor screen a beam spot whose size is larger at high brightness levels than at low brightness levels of the image so that sharpness of the reproduced picture is deteriorated, particularly at the demarcation between bright and dark portions or areas of the picture. Further, when a beam scanning the screen in the line-scanning direction moves across the demaraction or edge between dark and bright areas of the picture, for example, black and white areas, respectively, the frequency response of the receiver does not permit the beam intensity to change instantly from the low level characteristic of the black area to the high level characteristic of the white area. Therefore, the sharpness of the reproduced image is degraded at portions of the image where sudden changes in brightness occur in response to transient changes in the luminance or brightness of the video signal being reproduced. The increase in the beam current and in the beam spot size for bright portions of the reproduced picture or image and the inadequate frequency response of the television receiver to sudden changes in the brightness or luminance level of the incomming video signal are additive in respect to the degradation of the horizontal sharpness of the reproduced image or picture.
It is well known that an improvement in apparent picture resolution can be achieved by modulating the beam scan velocity in accordance with the derivative of the video signal which controls the beam intensity. This video signal is referred to as the luminance signal and the derivative of the luminance signal is employed for such control. An advantage of this method over a peaking approach to picture sharpness enhancement is the avoidance of blooming of peaked white picture elements.
It is known in the prior art to apply a differentiated video signal to the input of a double ended limiter incorporating a pair of threshold circuits. The limiter consists of two separate differential amplifiers, where each amplifier is separately biased to provide double ended limiting as well as to provide coring. The limiter arrangement develops a doubly clipped signal output which does not respond to excursions of the differentiated signal which lie below selected threshold magnitudes. Thus the gain of the limiter is such as to provide sharpness enhancement for slow transients while precluding excessive supplemental beam deflection with fast transients. The coring capability of the limiter arrangement significantly lessens the likelihood of noise visibility.


 - The PANASONIC TX-29AS10C  Features a multistandard PAL/SECAM/NTSC 3.58 & 4.43 CCIR B/G/H/I/L/D/K/M. The different coding processes, e.g. NTSC, PAL and SECAM, introduced into the known colour television standards, differ in the nature of the chrominance transmission and in particular the different systems make use of different colour subcarrier frequencies and different line frequencies.

TV signals are defined primarily the National Television Standards Committee (NTSC), the Phase Alternative Line (PAL) or the Sequential Couleur Avec Memoire (SECAM) systems, and used in different countries around the world. An analog TV signal utilizes mainly two or three RF carriers, combined in the same channel band. One carrier may commonly be amplitude modulated (AM) with video content, and the other may be frequency modulated (FM) and/or amplitude modulated (AM) with audio content. An analog TV receiver functions by performing a series of operations comprising adjusting the signal power, separating the video and audio carriers, and locking to each carrier in order to down-convert the signals to baseband. The baseband video signal may then be decoded and displayed by achieving horizontal and vertical synchronization and extracting the luminance and color information. After demodulating the received signal, the resulting baseband audio may be decoded, and left, right, surround channels and/or other information may be extracted.

The following explanations relate to the PAL and NTSC systems, but correspondingly apply to video signals of other standards and non-standardized signals.
The colour subcarrier frequency (fsc) of a PAL system and a NTSC system is fsc(NTSC) = 3.58 MHz or fsc(PAL) = 4.43 MHz.
In addition, in PAL and NTSC systems the relationships of the colour subcarrier frequency (fsc) to the line frequency (fh) are given by fsc(NTSC) = 227.50 * fh or 4•fsc(NTSC) = 910 • fh fsc(PAL) = 283.75 * fh or 4•fsc(PAL) = 1135 • fh so that the phase of the colour subcarrier in the case of NTSC is changed by 180°/line and in PAL by 270°/line.

The invention relates to a digital multistandard decoder for video signals and to a method for decoding video signals. Colour video signals, so-called composite video, blanking and sync signals (CVBS) (chroma-video-blanking-sync) signal is a signal comprising both the chrominance and the luminance component of the video signal. Therefore, the CVBS video signal may be PAL video signal, a SECAM video signal, or an NTSC video signal. are essentially composed of a brightness signal or luminance component (Y), two colour difference signals or chrominance components (U, V or I, Q), vertical and horizontal sync signals (VS, HS) and a blanking signal (BL).

In order to decode a video signal and restore a color image, a color TV set has to identify the color TV standard used at the emission. Conventional color TV sets are equipped with a system for automatically identifying the norm or standard of the color TV set used for the emission. The invention more particularly relates to an automatic method for identifying a color TV standard in a multistandard TV set.

Presently, the most commonly used color TV standards are PAL, NTSC and SECAM standards. For these three standards, each line of the composite video signal comprises a synchronization pulse, a burst of a few oscillations of the chrominance sub-carrier signal, then the signal itself corresponding to the image, comprising superimposed luminance and chrominance information, the latter information being carried by the luminance signal.

The characteristics of the chrominance sub-carrier in the various PAL, NTSC and SECAM standards are defined in the published documents concerning these standards and will not be described in detail here. However, the main characteristics of these various standards will be briefly reminded because these indications are useful for a better understanding of the invention.

In the PAL standard, the frequency of the chrominance sub-carrier is equal for all the lines, but the phase of one of the modulation vectors varies + or -90° from one line to another. The frequency of the chrominance sub-carrier is standardized at 4.43 Mhz. In this system, the burst signal is also shifted by + or -90° from one line to the next.

In the NTSC standard, the chrominance sub-carrier is equal for all the lines.

In the SECAM standard, one uses two chrominance sub-carrier frequencies which alternate from one line to another, at 4.25 Mhz and 4.40 Mhz, respectively. These two chrominance sub-carriers are frequency modulated.

The multistandard color TV sets must have distinct internal systems designed to decode the luminance and chrominance signals for each standard used.

Therefore, these TV sets have to previously identify the received standard.

Systems for automatically identifying the standard used already exist. Generally, for such an automatic standard identification, the systems known use the bursts of the chrominance sub-carrier signal that are present at the beginning of each line. In fact, these bursts are standardized and calibrated samples of the chrominance sub-carrier transmitted on the video signal and comprise all the characteristic information concerning the transmitted color standard. The information contained in these bursts represents the frequency, the phase of one of the modulation vectors and the frequency or phase variation of one line with repect to the next one.

- CTI Picture Improvements circuitry in which colour signal, e.g. the line-sequential colour difference signals (R-Y,B-Y), is processed by an edge steepening circuit e.g. a colour transient improver and/or a two-line delay line in which the colour signals from two lines are added. The delay line may be part of a drop-out compensation circuit in which the colour signal of line n is replaced by the signal present for line n-2. A CCD-line may be used as the two-line delay line, and an amplitude limiter included. ADVANTAGE - Increased picture sharpness and improved signal-to-noise ratio.

Offering many features (see specifications) with 46KG of heavy weight it gives superb pictures perfectly focused /sharp  and excellent color response on a real flat square 4:3 screen.

Note: This PANASONIC TX-29AS10C set was the first model series using the ITT/MICRONAS MEGAVISION CHIPSET FROM THE ITT DIGIVISION DIGIT3000 TECHNOLOGY FAMILY.
The invention relates to a method for reducing flicker in a television set, in which motion of the contents of a frame to be processed is determined by a device for motion detection, a first frame reproduction sequence with reduced flicker is executed if no motion is detected, and a second frame reproduction sequence with reduced flicker and correct motion is executed if movement is detected.
The invention additionally relates to a circuit configuration for carrying out the method.
Television sets operate according to the line interlacing method. A frame is processed and presented in the form of two fields which are displayed one after the other in time and in a manner offset by one line. In that case, flicker is produced, on one hand in fine structures and, on the other hand in structures with large areas (edge flicker and large area flicker, respectively).
In order to reduce flicker, methods are therefore used in which the fields are additionally displayed once again in a time period that is predetermined at the transmitter end. A first such method includes displaying the fields (A, B) of a frame directly succeeding one another and thereupon repeating them once again (ABAB). The rate of display in that case is twice the conventional rate of display. In that method, the frequencies both of the large-area flicker and of the edge flicker are doubled, thereby producing a reduction in flicker due to the inertia of the human eye.
What is problematic is that the fields each belong to different motion phases. In the case of the field part-sequence BA, a jump back exists in the motion phase. Moving contents are therefore perceived as jittery motion. The quality afforded by the display method ABAB in the case of rapidly moving frame contents is, accordingly, inadequate.
In the case of a second method, each field is repeated directly (AABB). The field sequence in that case is correct in terms of the motion phases. A frame reproduction sequence with correct motion is thus possible. The frequency of the large-area flicker is doubled, whereas the frequency of the edge flicker remains unchanged. A method for flicker reduction in television sets is described in a publication entitled: Verbesserung der PAL Bildqualitat durch digitale Interframetechnik Improving PAL Picture Quality by a Digital Interframe Technique! by Helmut Schonfelder, in Fernseh- und Kino-technik Television and Cinema Technology!, Volume 38, 1984, No. 6, pages 231 to 238. That method uses a motion detector to determine the occurrence of moving structures and changes over from a field reproduction sequence ABAB for slightly moving structures to a reproduction sequence AABB for moving structures.

The set has 2 AV SCART SOCKETS and full advanced OSD Control with remote and complete digital signal processing Video and Audio.

A SCART Connector (which stands for Syndicat des Constructeurs d'Appareils Radiorécepteurs et Téléviseurs) is a standard for connecting audio-visual equipment together. The official standard for SCART is CENELEC document number EN 50049-1. SCART is also known as Péritel (especially in France) and Euroconnector but the name SCART will be used exclusively herein. The standard defines a 21-pin connector (herein after a SCART connector) for carrying analog television signals. Various pieces of equipment may be connected by cables having a plug fitting the SCART connectors. Television apparatuses commonly include one or more SCART connectors.

Although a SCART connector is bidirectional, the present invention is concerned with the use of a SCART connector as an input connector for receiving signals into a television apparatus. A SCART connector can receive input television signals either in an RGB format in which the red, green and blue signals are received on Pins 15, 11 and 7, respectively, or alternatively in an S-Video format in which the luminance (Y) and chroma (C) signals are received on Pins 20 and 15. As a result of the common usage of Pin 15 in accordance with the SCART standard, a SCART connector cannot receive input television signals in an RGB format and in an S-Video format at the same time.

Consequently many commercially available television apparatuses include a separate SCART connectors each dedicated to receive input television signals in one of an RGB format and an S-Video format. This limits the functionality of the SCART connectors. In practical terms, the number of SCART connectors which can be provided on a television apparatus is limited by cost and space considerations. However, different users wish the input a wide range of different combinations of formats of television signals, depending on the equipment they personally own and use. However, the provision of SCART connectors dedicated to input television signals in one of an RGB format and an S-Video format limits the overall connectivity of the television apparatus. Furthermore, for many users the different RGB format and S-Video format are confusing. Some users may not understand or may mistake the format of a television signal being supplied on a given cable from a given piece of equipment. This can result in the supply of input television signals of an inappropriate format for the SCART connector concerned.

This kind of connector is todays obsoleted !

The set was fitted with the EURO 4H chassis which was reliable except for a discrete amount of dry joints around the chassis and around the DIGITAL PROCESSING BOARD which sometimes had required complete professional reworking job to fix it definitely and safely.


(Needles to say that any LCD Crap can't stay  only in front of this set even turned off !!.)


SPECIFICATIONS of PANASONIC TX-29AS10C
Power Source: 220-240V a.c., 50Hz
Power Consumption: 141W
Standby Power
Consumption: 1,4W
Aerial Impedance: 75Ω unbalanced, Coaxial Type
Receiving System: PAL-B/G, H, D/K, PAL-525/60
SECAM B/G, D/K
M.NTSC (AV only)
NTSC (AV only)
Receiving Channels:
VHF E2-E12 VHF H1-H2 (ITALY)
VHF A-H (ITALY) VHF R1-R2
VHF R3-R5 VHF R6-R12
UHF E21-E69 CATV (S01-S05)
CATV S1-S10 (M1-M10) CATV S11-S20 (U1-U10)
CATV S21-S41 (HYPERBAND)
Intermediate Frequency:
Video 38,9MHz
Sound 33,4MHz (B/G), 33,16MHz(A2 STEREO)
32,4MHz (D/K)
32,66MHz (CZECH STEREO)
Colour 34,47MHz (PAL)
34,5MHz, 34,65MHz (SECAM)
Video/Audio Terminals:
AUDIO MONITOR OUT Audio (RCAx2) 500mV rms1kΩ
AV1 IN Video (21 pin) 1V p-p 75Ω
Audio (21 pin) 500mV rms 10kΩ
RGB (21 pin) 0,7V p-p 75Ω
AV1 OUT Video (21 pin) 1V p-p 75Ω
Audio (21 pin) 500mV rms 1kΩ
AV2 IN Video (21 pin) 1V p-p 75Ω
Audio (21 pin) 500mV rms 10kΩ
S-Video IN Y: 1V p-p 75Ω
(21 pin) C: 0,3V p-p 75Ω
AV2 OUT Video (21 pin) 1V p-p 75Ω
Audio (21 pin) 500mV rms 1kΩ
AV3 IN S-Video IN Y: 1V p-p 75Ω
(4 pin) C: 0,3V p-p 75Ω
Audio (RCAx2) 500mV rms10kΩ
Video (RCAx1) 1V p-p 75Ω
High Voltage: 30,5kV ±1kV
Picture Tube: A68ELO10X71 68cm
Audio Output: 2x7W RMS, 2x15W MPO
8Ω Impedance
Headphones 8Ω Impedance
Accessories supplied: Remote Control
2 x R6 (UM3) Batteries
Dimensions:
Height: 579mm
Width: 688mm
Depth: 495mm
Net Weight: 46kg.

About Screen Formats...............

It is difficult to know exactly what to make of the unfolding widescreen TV saga, which seems to be yet another example of failure to agree to a TV standard. Is it perhaps simply an attempt by the European TV industry to snatch a temporary advantage over Far Eastern manufacturers?
 Certainly it's the European tubemakers that have developed the technology. 
But if this is the case the question that has to be asked is whether widescreen TV is a further example of an attempt by technology rather than consumer demand to drive the market forwards? If so it could well be a mistake. People won't buy technology for the sake of it: they'll buy only what suits them. 

The 16:9 aspect ratio sets that have been announced so far are a mixed batch. Nokia has opted for 625 -line PAL, Thomson has opted for 1,250 -line PAL while Philips has decided on 625 -line PAL with a 100Hz field rate. Nokia feels that the wide screen is the important thing rather than any change to basic TV standards. The company points to the cost advantage of using a standard chassis to drive the new type of tube. But evenhere the wide screen presentation is seen as essentially a top of the range phenomenon. In this case why not go the whole hog? With a chassis that features digital signal processing, why not take advantage of the opportunity to improve the definition and get rid of flicker once and for all? There are arguments as to exactly how much better a picture you get for your money at higher timebase frequencies. 

What this seems to boil down to is that compromises, as always with TV, have to be accepted. The argument is over what compromise to accept. It's a rather pointless argument really and one can't help but feel that the motivation behind it is simply a matter of gaining marketing clout rather than achieving the best in good picture reproduction.
There is much to be said for the view that a well set up display using conventional technology and a decent aerial system, with no corner cutting in circuit design, will with the presently available transmissionsprovide as good a picture as any for the viewer rather than the technology buff. 

Representatives of the main Japanese manufacturers in the UK have been making disparaging comments about widescreen TV. The case was put forcibly by Mark Todd, Toshiba's marketing director. He hit the headlines with coments that widescreen TV was "premature" and "a joke", but rather more to the point he suggested that instead of buying a set that is "too big" and "too expensive" the consumer would be better off with a 34in. Nicam set featuring surround sound. 

The money saved could, he added, be invested in a building society. The debate has been clouded by dispute over what programming is available. At present it seems to be limited to a few tapes and Continental satellite channels transmitted in D2-MAC form. Not much really to justify lashing out on a set that costs a few thousand pounds. Since some rather rude remarks about the 16:9 picture format  have been somewhat severely taken to task over what is and what isn't a natural display based on the characteristics of human vision, in particular who quoted a considerable amount of research. 
The fact that human eyes are horizontally displaced, giving perception somewhat elongated in the horizontal plane compared to the vertical plane, looks a clincher. 
But this rather overlooks the reason for us having two eyes in the first place to achieve bifocalvision. The images from the two eyes are superimposed to give us a three-dimensional fieldof view. It's nothing to do with aspect ratio!
 The aspect ratio debate continues in actual times with minor noise and debate is been  gratified by some support amongst more recent observations from people.

It all arrived too late for this issue, but watch this space as they say. What does rather intrigue me in all this is whether sight is really a scientific matter. It is, of course, as a subject for study. But as an aspect of natural history it seems more akin to disciplines such as economics rather than pure science. 
Those who take an interest in the endless economic debate, with one plausible argument after another seeming to establish opposite points of view, will appreciate this. The problem of course is that you can't conduct conclusive experiments with the subject matter of economics. You can't say right, call a halt,  go back five years and see what happens if we alter the conditions. Anything of an historical nature can only be observed and, in a more or less helpful manner, explained. That seems to be the case with human perception. You can't experiment with different vision systems. You have to understand as best you can the one we've ended up with. However that may be, the TV industry is not doing itself any great favours with its continual change.  

To the 4:3 and 16:9 aspect ratios we now have a proposed compromise 14:9. It's not easy of course to arrive at decisions with absolute certainty. Technological evolution continuously and often suddenly shifts, and new possibilities have a habit of coming at times that are inconvenient for the standards decision makers. Perhaps we should give up worrying about TV standards and accept the fact that there have always been and always will be different ways of going about things, with various advantages and disadvantages. Let's just sit back and watch the thing unfold. It would be nice to take a relaxed view like that. But of course there's more at stake.
 Sets have to be manufactured to standards, broadcasters have to observe system parameters and, at ourend of things, the public has to be presented with a good case for buying what's available. It doesn'thelp the salesman to have to work in an atmosphere of   continuing destructive uncertainty.

One more comment about digital in 2000..............

Over the years we have learnt that one of the most important things in video/ TV technology is selecting the best system to use. We have also seen how difficult this can be. Prior to the start of the colour TV era in Europe there was an great to-do about the best system to adopt. The US NTSC system seemed an obvious choice to start with. It had been proved in use, and refine- ments had been devised. But alternative, better solutions were proposed - PAL and Secam. PAL proved to be a great success, in fact a good choice. 

The French Secam system seems to have worked just as well. Apart from the video tape battles of the Seventies, the next really big debate concerned digital TV. When it came to digital terrestrial TV (DTT), Europe and the USA again adopted different standards. 

One major difference is the modulation system used for transmission. Coded orthogonal frequency   division multiplexing (COFDM) was selected for the European DVB system, while in the USA a system called 8VSB was adopted. COFDM uses quadrature amplitude modulation of a number of orthogonal carriers that are spread across the channel bandwidth. Because of their number, each carrier has a relatively low bit rate. 

The main advantage of the system is its excellent behaviour under multipath reception conditions. 8VSB represents a rather older,  pre phase modulation technoogy: eight  state amplitude modulation of a single carrier, with a vestigial sideband. The decision on the US system was assigned to the Advanced Television Systems Committee (ATSC), reporting to the FCC. The system it proposed was approved by the FCC on December 26th, 1996. The curious date might suggest that there had been a certain amount of politicking. In fact there had been an almighty row between the TV and computer industries about the video standard to adopt, the two fearing that one or other would gain an advantage as the technologies converged. It was 'resolved' by adopting a sort of   "open standard"  we are talking about resolution and scanning standards here - the idea apparently being that the technology would somehow sort itself out.

 There seems to have been rather less concern about the modulation standard. 8VSB was adopted because it was assumed to be able to provide a larger service area than the alternatives, including COFDM, for a given transmitter power. Well, the USA is a very large place! But the US TV industry, or at least some parts of it, is now having second thoughts. Once the FCC had made its decision, there was pressure to get on with digital TV. In early 1998 there were announce- ments about the start of transmissions and broadcasters assured the FCC that DTT would be available in the ten areas of greatest population concentration by May 1999. Rapid advances were expected, with an anticipated analogue TV switch -off in 2006. So far however things have not gone like that. At the end of 1999 some seventy DTI' transmitters were in operation, but Consumer Electronics Manufacturers Association estimates suggest that only some 50,000 sets and 5,000 STBs had been sold.

 There have been many reports of technical problems, in particular with reception in urban and hilly areas and the use of indoor aerials, also with video/audio sync and other matters. Poor reception with indoor aerials in urban conditions is of particular concern: that's how much of the population receives its TV. The UK was the first European country to start DTI', in late 1998 - at much the same time as in the USA. The contrast is striking. ONdigital had signed up well over 500,000 subscribers by the end of 1999, a much higher proportion of viewers than in the USA. Free STBs have played a part of course, but it's notable that DTT 's reception in the UK has been relatively hassle -free. In making this comparison it should also be remembered that the main aim of DTT technology differs in Europe and the USA. 

The main concern in Europe has been to provide additional channels. In the USA it has been to move to HDTV, in particular to provide a successor the NTSC system. There have been plenty of channels in the USA for many a year. For example the DirecTV satellite service started in mid 1994 and offers some 200 channels. Internationally, various countries have been comparing the US and European digital systems. They have overwhelmingly come down in favour of the DVB system. There have been some very damaging assessments of the ATSC standard. The present concern in the US TV industry results from this poor domestic take up and lack of international success. Did the FCC make a boob, in particular in the choice of 8VSB? Following compara- tive tests carried out by Sinclair Broadcasting Group Inc., the company has petitioned the FCC to adopt COFDM as an option in the ATSC standard. Not only did its tests confirm poor reception with indoor aerials: they also established that the greater coverage predicted for 8VSB failed to materialise in practice. Could the USA have two DTT transmission standards? It seems unlikely. It would involve dual standard receivers and non  standardisation of transmitters. In the all important business of system selection, it looks as if the FCC got it wrong.

              ....................................   It is obviously wasteful to duplicate terrestrial TV transmissions in analogue and digital form. Sooner or later transmissions will all be digital, since this is a more efficient use of spectrum space. The question is when? It would suit some to switch off the analogue transmitters as soon as possible. 2006 has been suggested as a time to start, with ana- logue transmissions finally ending in 2010. All very neat and tidy. Whether it will work out in that way is another matter. Strong doubts are already beginning to be aired. 

 The government has, quite properly, laid down conditions to be met before the switch off occurs. Basically that the digital signal coverage should equal that achieved for analogue TV, currently 99.4 per cent of the population, and that digital receiving equipment should be available at an affordable price. The real problem is that there is a difference between a coverage of 99.4 per cent and 99.4 per cent of the population actually having digital receiving equipment. Why should those who are interested in only free - to -air channels go out and buy/rent a digital receiver? It is already becoming evident that this represents a fair chunk of the population. 

The ITC has warned the government that the 2006-2010 timetable is in jeopardy. Peter Rogers, the ITC's chief executive, has said "we need to persuade people only interested in watching free -to -air television to switch to digital. "

Unless we do, there will be no switch - over." Well not quite, because the analogue receivers will eventually wear out and have to be replaced. But that could take a long, long time. Meanwhile many people will expect to be able to continue to watch their usual TV fare using their existing analogue receivers. 

Research carried out by Culture Secretary Chris Smith's department has established that between forty and fifty per cent of the population expects the BBC licence to cover their TV viewing, which means what they get at present in analogue form. A substantial percentage of the population simply isn't interested in going digital. In fact take up of integrated receiver -decoders, as opposed to the free digital set -top boxes, has so far been very slow. 

Of five million TV sets sold in the UK year 1999 , only 10,000 were digital. There are important factors apart from overall coverage and how many people have sets. There is the extension of coverage, which becomes more difficult to achieve eco- nomically as the number of those not covered decreases. There is the problem of reception quality. And there is the question of domestic arrangements and convenience. Extending coverage to the last ten fifteen per cent of the population by means of conventional terrestrial transmitters will be expensive. Mr Smith's department seems to have conceded that other methods of signal delivery may have to be adopted - by satellite, by microwave links or by cable. The latter has of course never been economic where few households are involved. 

The frequency planners have been trying to find ways of increasing coverage even to well populated areas. There are so many areas where problems of one sort or another make the provision of DTT difficult. Satellite TV is the obvious solution. 

The time may well come when it is wondered why anyone bothered with DTT. Signal quality is becoming an increasingly important factor as the digital roll out continues. In areas where the signal is marginal, viewers could experience the extreme irritation of picture break up or complete loss like even todays. This is quite apart from the actual quality of the channel, which depends on the number of bits per second used. There is a maximum number of bits per multiplex, the total being shared by several channels. The fewer the bits, the poorer the picture in terms of definition and rendering. 

There have already been complaints about poor quality. The question of domestic arrangements is one that has not so far received adequate public attention. Most households 2000 nowadays don't have just one TV set that the family watches. They have a main one, probably, almost certainly one or more VCRs, and several other sets around the house to serve various purposes. What 'the percentage of households that have digital TV' should really mean is the percentage willing to replace all this equipment. It will be expensive, and people would not be happy if they were told to throw away their other equipment when they get a single nice new all  singing all dancing widescreen digital TV set. It fact there would be uproar. The move from analogue to digital is not like that from 405 to 625 lines, which went fairly smoothly.

In those days few people had video equipment or a multitude of sets. The transition to digital is not going to be smooth, and the suggestion of a switch off during 2006-2010 already looks totally unrealistic. Unless the government subsidises or gives away digital TV sets - and why should it? - people will expect their existing equipment to continue to be usable.  

So it's likely that analogue TV will be with us for many years yet. But that would be the end of analogue too. 

.............................Indeed...............................

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Panasonic Corporation (Panasonikku Kabushiki-gaisha) (TYO: 6752, NYSE: PC), formerly known as Matsushita Electric Industrial Co., Ltd. ( Matsushita Denki Sangyō Kabushiki-gaisha), is a Japanese multinational consumer electronics corporation headquartered in Kadoma, Osaka, Japan. Its main business is in electronics manufacturing and it produces products under a variety of names including Panasonic and Technics. Since its founding in 1918, it has grown to become the largest Japanese electronics producer. In addition to electronics, Panasonic offers non-electronic products and services such as home renovation services. Panasonic was ranked the 89th-largest company in the world in 2009 by the Forbes Global 2000 and is among the Worldwide Top 20 Semiconductor Sales Leaders !

History

Panasonic was founded in 1918 by Konosuke Matsushita first selling duplex lamp sockets. In 1927, it produced a bicycle lamp, the first product it marketed under the brand name National. It operated factories in Japan and other parts of Asia through the end of World War II, producing electrical components and appliances such as light fixtures, motors, and electric irons. After World War II, Panasonic regrouped and began to supply the post war boom in Japan with radios and appliances, as well as bicycles. Matsushita's brother-in-law, Toshio Iue founded Sanyo as a subcontractor for components after WWII. Sanyo grew to become a competitor to Panasonic. Name For 90 years since establishment, the name of the company was always topped with "松下" ("Matsushita"). The company's name before 1 October 2008 had been "Matsushita Electric Industrial Co., Ltd.", used since 1935. In 1927, the company founder adopted a brand name "National" ( National) for a new lamp product, knowing "national" meant "of or relating to a people, a nation."[5] In 1955, the company labeled its export audio speakers and lamps "PanaSonic", which was the first time it used its "Panasonic" brand name. The company began to use a brand name "Technics" in 1965.[6] The use of multiple brands lasted for some decades.[6] In May 2003, the company put "Panasonic" as its global brand, and set its global brand slogan, "Panasonic ideas for life."[7] The company began to unify its brands to "Panasonic" and, by March 2004 replaced "National" for products and outdoor signboards, except for those in Japan[7]. On January 10, 2008, the company announced that it would change its name to "Panasonic Corporation" (effective on October 1, 2008) and phase out the brand "National" in Japan, replacing it with the global brand "Panasonic" (by March 2010). The name change was approved at a shareholders' meeting on June 26, 2008 after consultation with the Matsushita family. Panasonic owns RCTI, Global TV and MNC TV. Electronics In 1961, Konosuke Matsushita traveled to the United States and met with American dealers. Panasonic began producing television sets for the U.S. market under the Panasonic brand name, and expanded the use of the brand to Europe in 1979. The company used the National trademark outside of North America during the 1950s through the 1970s. (The trademark could not be used probably due to discriminatory application of trademark laws where brands like General Motors were registrable.) It sold televisions, hi-fidelity stereo receivers, multi-band shortwave radios, and marine radio direction finders, often exported to North America under various U.S. brand names. The company also developed a line of home appliances such as rice cookers for the Japanese and Asian markets. Rapid growth resulted in the company opening manufacturing plants around the world. National/Panasonic quickly developed a reputation for well-made, reliable products. The company debuted a hi-fidelity audio speaker in Japan in 1965 with the brand Technics. This line of high quality stereo components became worldwide favorites. The most famous product still made today is the SL-1200 record player, known for its high performance, precision, and durability. Throughout the 1970s and early 1980s, Panasonic continued to produce high-quality specialized electronics for niche markets such as shortwave radios, as well as developing a successful line of stereo receivers, CD players, and other components. Since 2004, Toyota has used Panasonic batteries for its Toyota Prius, an environmentally friendly car made in Japan. On January 19, 2006 Panasonic announced that, starting in February, it will stop producing analog televisions (then 30% of its total TV business) to concentrate on digital TVs. On November 3, 2008 Panasonic and Sanyo were in talks, resulting in the eventual acquisition of Sanyo. The merger was completed in December 2009, and resulted in a mega-corporation with revenues over ¥11.2 trillion (around $110 billion). As part of what will be Japan's biggest electronics company, the Sanyo brand and most of the employees will be retained as a subsidiary. In November 1999, the Japan Times reported that Panasonic planned to develop a "next generation first aid kit" called the Electronic Health Checker. At the time, the target market was said to be elderly people, especially those living in rural areas where medical help might not be immediately available, so it was planned that the kit would include support for telemedicine. The kits were then in the testing stage, with plans for eventual overseas distribution, to include the United States. In recent years the company has been involved with the development of high-density optical disc standards intended to eventually replace the DVD and the SD memory card. On July 29, 2010 Panasonic reached an agreement to acquire the remaining shares of Panasonic Electric Works and Sanyo shares for $9.4 billion. Panasonic and Universal Panasonic used to own Universal Studios, then known as the Music Corporation of America, since acquiring the company in 1990 but sold it to Seagram in 1995. Universal Studios is now a unit of NBC Universal.

JAPAN IS STRANGE

Strange how situations change. It seems not so long ago that Japan and its industries, particularly electronics, could do no wrong. They taught us how to make cars and TV sets properly. They invested heavily and came up with a seem- ingly endless stream of desirable, innova- tive products. Both outsiders and insiders could see no end to this success story. We were told, by more than one leading Japanese electronics industrialist, that the 21st century would be the Japanese one, when Japan became predominant industri- ally and culturally. For the last couple of years the situation has been somewhat different. Japan is still the world's second largest economy, but the previous confidence has gone. The econo- my has stalled, and doesn't look like getting going again for some time. Profitability has become appalling, and the talk now is all of restructuring and job losses. Sony has announced that some 17,000 jobs will be lost worldwide, ten per cent of its workforce, while fifteen of its seventy factories are to be closed. Mighty Hitachi, whose activities span a much wider field and whose turnover is equivalent to over two per cent of Japan's gross domestic product, has launched a detailed review of its businesses. 6,500 of its 66,000 parent company employees are to be made redun- dant by March next year. On a consolidat- ed basis Hitachi is Japan's largest employ- er, with 330,000 staff. Businesses are to be dropped or reorganised. The story from Mitsubishi Electric is similar: there is to be a "sweeping restructuring of its portfolio of businesses". In the UK, the latest manifes- tation of this is the closure of Mitsubishi's VCR plant at Livingston. 14,500 jobs will go (8,400 in Japan) at Mitsubishi Electric, nearly ten per cent of the workforce. Other manufacturers who have announced poor results and restructuring recently include NEC, Matsushita, Sharp and Toshiba. It's all a long way since the time when, it seemed, all the Japanese had to do was to get the product right and produce more and more of it. Some of this was foreseeable. Markets reach saturation point; new products are not always a runaway success; if investment in new plant is excessive you end up with too much capacity; and so on. Then there is the fact that Japan is not isolated from econom- ic problems elsewhere: no economy that is heavily dependent on exports can be. But there are also more specific Japanese prob- lems. The banking system is beset by non- performing loans that Japanese bankers are reluctant to write off. The bubble economy of a few years ago, when asset values rose to unrealistic levels, collapsed. This is part of the cause of the banking system difficul- ties. Then there is the practice of cross - ownership, with firms owning substantial stakes in each other. This can work nicely when everything is doing well: when reces- sion looms, it aggravates the problems. Japan's unemployment rate hit a new high of 4.8 per cent (3.39m) in March, part- ly because of the corporate sector restructur- ing. Japanese industrialists hope to improve their profitability in the second half of the year, and will be helped by improved condi- tions in SE Asia. But it will be hard going, particularly to improve domestic market conditions. The Japanese have always had a high propensity to save. This increases when the economic climate is poor, with unemployment a threat. Right now Japanese consumers are saving rather than buying. No one seems to know how to alter their behaviour. There is also a demographic problem: the Japanese population is ageing. Japanese interest rates are negligible. So borrowing is not a problem. But conversely all those savings are bringing in little income. In the Western world interest rate changes often have a considerable impact on the economy. This economic tool is not available when interest rates are negligible. The Japanese have been advised to get their banking system sorted out, but that's not the sort of thing that can be done overnight. Right now the best opportunity for Japan seems to be to export its way out of its dif- ficulties, something that shouldn't be too difficult once worldwide expansion has resumed. But the high value of the yen is a drawback. From the economic viewpoint it's an extremely interesting situation, one in which the laws of economics have little to offer. This could be because such laws are, basically, descriptive rather than prescrip- tive. In the real world you can't always ini- tiate economic activity through monetary or fiscal means. Some commentators have gone so far as to suggest that the Japanese government should spend, spend, spend and print money to kick-start the economy. This is a dangerous course that can go badly wrong. It has already been tried by the Japanese government to a limited extent, with similarly limited success. The one thing that we do know is that economies are not stable. Change is ever present in one form or another. The prob- lem lies in trying to control it. This is all rather humbling, and certainly something of a comeuppance for the rather arrogant Japanese industrialists who had talked about the century of Japanese economic hegemony.

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