BRIONVEGA LED TVC 20 YEAR 1981

 

The BRIONVEGA LED TVC 20 is a 20 inches (51cm) color television and features 20 programs + av, remote, PLL synthesizer 100 channels automatic station search,a frequency synthesizer controlled channel selection means which includes a fine tuning arrangement; means for initiating a sweep of available channels by the channel selection means; means for stopping the sweep on reception of a signal and means, operable on cessation of sweeping and responsive to the frequency of the signal, and arranged to control the fine tuning arrangement to compensate for frequency drift of the signal , 

• external speaker output 

• VCR (VIDEO recorders) connectivity feature.

• First time the TDA3560/61  featured use of  decoder for the PAL colour television standard. It combines all functions required for the identification and demodulation of PAL signals. Furthermore it contains a luminance amplifier, an RGB-matrix and amplifier. These amplifiers supply output signals up to 5 V peak-to-peak (picture information) enabling direct drive of the discrete output stages. The circuit also contains separate inputs for data insertion, analogue as well as digital, which can be used for text display systems (e.g. (Teletext/broadcast antiope), channel number display, etc.

• PLL Synthesizer first time using a micro controller M3870 type With the PLL synthesized tuning color television with  frequency synthesized tuning system, a television tuning system employs a frequency synthesizer system for establishing the tuning of the receiver, featured with a Microcomputer M3870 driven synthesis system. The 3870 Fairchild, Motorola, SGS (SGS-Thomson)(MK3870) 8-bit microcontroller was a single chip implementation of Fairchild F8 (Mostek 3850). The microcontroller included up to 4 KB mask-programmable ROM, 64 bytes scratchpad RAM and up to 64 bytes executable RAM. The MCU also integrated 32-bit I/O and programmable timer. In addition to generic MK3870/xxx-xx markings the 3870 chips also had device order number in the form "MK#####x-xx".Mostek also produced MK38P70 - development version of the 3870 MCU that supported external EPROM chip. The system employed in the tv permits utilization of a frequency synthesizer tuning system which correctly tunes to a desired television station or channel even if the transmitted signals from that station are not precisely maintained at the proper frequencies even in combination of a fine tuning adjustable by the user.The 3870, manufactured by Mostek, is a 3850 and 3856 on a single chip.

PLL SYNTHESIZED TUNING System Concepts:
INTRODUCTION Digital tuning systems are fast replacing the conventional mechanical systems in AM FM and television receivers The desirability of the digital approach is mainly due to the following features * Precise tuning of station frequencies
* Exact digital frequency display
* Keyboard entry of desired frequency
* Virtually unlimited station memory
* Up down scanning through the band
* Station ‘‘search’’ (stop on next active station)
* Power on to the last station
* Easy option for time-of-day clock In addition
" recent "developments in large scale integrated circuit technology and new varactor diodes for the AM band have made the cost-benefit picture for digital tuning very attractive System partitioning is extremely important in optimizing this cost-benefit picture as will be discussed.

SYSTEM DESCRIPTION
A simplified block diagram of a typical digitally tuned receiver is shown in Figure 1 Notice this receiver could be one for AM FM marine radio or television it makes no difference The frequency synthesizer block generates the local oscillator frequency for the receiver just as a conventional mechanical tuner would However the phase-locked-loop (PLL) acts as an integral frequency multiplier of an accurate crystal controlled reference frequency while the mechanical type provides a continuously variable frequency output with no reference Some method of controlling the value of the multiplier for channel tuning must be provided The other RF IF and audio video circuitry will be the same as in the mechanical tuning method There are many different ways to partition the frequency synthesizer system to perform the digital tuning function................

 

• THE BRIONVEGA LED TVC 20 Television set is sporting the PHILIPS 30AX CRT Tube.The 30AX system, which Philips introduced in 1979, is an important landmark in the development of colour picture systems. With previous systems the assembly technician had to workthrough a large number of complicated setting-up procedures whenever he fitted a television picture tube with aset of coils for deflecting the electron beams. These procedures were necessary to ensure that the beams for the three colours would converge at thescreen for every deflection. They are no longer necessary with the 30AX system: for a given screen format any deflection unit can be combined  with any tube to form a single 'dynamically convergent' unit. A colour-television receiver can thus be assembled from its components almost as easily as a monochrome receiver. The colour picture tube of the PHILIPS 30AX system displays a noticeably sharper picture over the entire screen surface. This will be particularly noticeable when data transmissions such as Viewdata and Teletext are displayed. This has been achieved by a reduction in the size of the beam spot by about 30%. Absence of coma and the retention of the 36.5 mm neck diameter have both contributed to increased picture sharpness. Coma has been eliminated by means of corrective field shapers embedded in the deflection coils which are sectionally wound saddle types. The new deflection unit has no rear flanges. enabling uniform self-convergence to be obtained for all screen sizes. without special corrections, adjustments, or tolerance compensations. Horizontal raster distortion is reduced and no vertical correction is required. One of the inventions in 30AX is an internal magnetic c

orrection system which obviates static convergence and colour purity errors. This enables the usual multiple unit to be dispensed with. together with the need for its adjustment !  New techniques have been employed to achieve close tolerance construction of the glass envelope. In addition, the 30AX picture tube incorporates two features whereby it can be accurately adjusted during the last stages of manufacture. One is the internal magnetic correction system. The other is an array of bosses on the cone that establish a precise reference for the axial purity positioning of the deflection unit on the tube axis and for raster orientation. During its manufacture, each deflection unit is individually adjusted for optimum convergence. The coil carrier also incorporates reference bosses that co-operate with those on the cone of the tube. ' Since every picture tube and every deflection unit is individually pre-aligned, any deflection unit automatically matches with any picture tube of the appropriate size. The deflection unit has only to be pushed onto the neck of the tube unit it seats. Once the reference bosses are engaged, the combination is accurately aligned and requires no adjustment for convergence, colour purity or raster orientation. With no multiple unit and a flangeless deflection unit, there is more space in the receiver cabinet. Higher deflection sensitivity means that less current is consumed, and consequently less heat is produced. This increases the reliability of the TV receiver again. 30AX means simple assembly. Any picture tube is compatible with any deflection unit of the appropriate size and is automatically self-aligning as well as being self-convergent.
Now that the new Philips/Mullard 30AX tube has put in an appearance, some details can be filled in. The new tube has been developed from the 20AX, which has been in production since 1974, but brings with it several important advances. First, no dynamic convergence, static convergence, purity or raster correction adjustments are necessary. Secondly the new yoke design gives improved deflection sensitivity, a straight NS raster, and reduced EW raster distortion. Due to the close mechanical tolerances and the inclusion of positioning bosses on the tube bowl, the tube and yoke can be aligned simply by being pushed together - any 30AX yoke will automatically match any 30AX tube of the appropriate size. Thirdly the newly designed electron gun gives a sharper spot, with greater focus uniformity over the screen area. An internal magnetic ring is used to give correct purity and static beam convergence, in place of the multipole unit used in previous in -line gun tube designs. This results in a strikingly compact assembly. The automatic yoke/tube alignment does away with the need for preset mechanical tilt and shift adjustments which, Philips point out, correct one error by introducing another. The new tube is being produced in the 26, 22 and 20in. screen sizes. The power consumption of a set fitted with the 30AX is typicaly 100W compared to 120W with the 20AX system, at 1.2mA beam current and with an e.h.t. of 25kV. This compares with 88W for a set fitted with a 90° narrow -neck tube and hybrid yoke, under the same conditions.
The well-known 20AX features of HI-Bri, Soft-Flash and Quick-vision are maintained in the new 30AX systern.  In their work on the design of deflection coils in the last few years the developers have expanded  the magnetic deflectionfields into 'multipoles', This approach has improved the understanding  of the relations between coil and field and between field and deflection to such an extent that  designing deflection units is now more like playing a difficult but fascinating game of chess than  carrying out the obscure computing procedure once necessary.

It's an interesting fact that the cathode ray tube, which was amongst the very earliest thermionic devices, seems likely to be amongst the very last in everyday use. Receiving valves are largely things of the past, while timebase valves now belong in the service department. The development of the CRT continues apace however, and one cannot see any likelihood of its demise. Solid-state displays have been talked about, and demonstrated, but anything likely to compete on cost and performance grounds with the modern colour tube seems forever to be "at least ten years away". The early experiments with cathode-ray tubes were carried out in the last century. By the turn of the century, crude CRTs could be made. An early CRT, the Wehnelt hot cathode tube of 1905, is on display at the IBA's Television Gallery. By 1910, Alexander Campbell -Swinton had come to appreciate the possibilities of the CRT as a pick-up and display device for television, and put forward suggestions for such a TV system. It was a while however before the type of tube we know today appeared. The tubes of the 1910-30 era were gas focused devices (relying on residual gas to focus the beam), the vacuum pumps of the period producing only a poor vacuum. By the time of the start of the BBC's TV service in 1936 however the modern type of tube had arrived. It was a triode device with external focusing and a deflection angle of around 50°. The usual sizes were 9 and 12in., and the e.h.t. was about 5kV. Post-war developments during the 1950s saw some important innovations. The deflection angle went to 70°, then 90°, then 110°; multi -electrode gun assemblies with electrostatic focusing were introduced; the e.h.t rose to 20kV; improved phosphors became available; and the advent of the aluminised screen considerably improved the brightness and contrast (by reflecting all the phosphor light emission forwards) while overcoming the problem of ion bombardment. Meanwhile, colour had come. The principle of the shadowmask tube had been suggested in the 1930s, but development (by RCA) had to wait until proposals for an acceptable, practical colour broadcasting system were put forward. A regular colour service was started in the USA in 1954, and the receivers were fitted with 21in. shadowmask tubes. Early developments included the use of improved phosphors, but essentially the same tube confronted us with the advent of colour transmissions in Europe in 1967. As you all know, it had three guns mounted in a triangular formation, a dot-phosphor screen, a massive convergence system in two sections (radial and lateral), plus purity magnets and a large metal shield on which the degaussing coils hung. It also needed both NS and EW raster correction circuitry. The first versions in Europe had a deflection angle of 90° : when the 110° version came along in the early 1970s the convergence and raster correction circuitry required were even more complex, but the degaussing shield had disappeared inside the tube. At much the same time however the first major breakthrough in large screen tube design occurred (we put it that way because the innovating Sony Trinitron was at the time mainly a small screen tube) - the RCA PIL tube with its in -line guns, phosphor -striped screen, and slotted shadowmask. The design of the yoke to provide self -convergence in conjunction with the in -line gun arrangement meant that no dynamic convergence system was required, while some simple manufacturer preset magnets provided static convergence and purity correction. Sets using this tube first appeared in Europe in 1975, and meanwhile the PHILIPS 20AX system had come along. Over the last few years the pace of development has quickened to a striking extent. We've had quick warm-up cathodes, the hi-bri technology which increases the shadow mask's transparency, the contoured line screen, the super -arch mask, pigmented phosphors, soft flash to reduce flashover damage, redesigned focus arrangements, and increased use of an earlier development, the black -stripe screen. The latest generation of tubes require no NS raster correction circuitry, which is all part of a parallel development in yoke technology, while the need for EW correction is also in the process of being designed out. With the new Philips 30AX tube, the static convergence and purity system disappear inside the tube in the form of a small internal magnetic ring. It's all a long way from Wehnelt's hot -cathode tube of 1905. The latest colour tubes are compact and have all the various correction arrangements required built in. They are amazing feats of precision engineering, and a solid-state alternative seems as far away as ever. Is there any farther to go along this path? Well, single -gun colour tubes using the beam indexing principle are now understood to be a practical proposition for small screen tubes, so we can't be too sure.

 

The BRIONVEGA LED TVC 20 is designed by Mario Bellini.

Mario Bellini (born February 1, 1935, Milan) is a world renowned Italian architect and designer. He graduated from the Milan Polytechnic - Faculty of Architecture in 1959 and began working as an architect himself in the early 1960s. He is the winner among others of 8 Compasso d’Oro and prestigious architecture awards including the Medaglia d’Oro conferred on him by the President of the Italian Republic.

Like many other Italian architects, his activities range from architecture and urban planning to product and furniture design.

His early international success grew rapidly during the first two decades, especially in the design sector, and reached its peak in 1987 with the greatest acknowledgement expressed in a personal retrospective exhibition at the Museum of Modern Art of New York, which at the time already included 25 of his works in its Permanent Collection, including a remarkable set of Olivetti machines as well as the furniture for B&B and Cassina - such as the famous "Cab" chair - and the innovative office chairs designed for Vitra. His career as a product and furniture designer began in 1963. From 1963 to 1991 he was chief design consultant for Olivetti. For many years he designed furnishing products and systems for B&B Italia and Cassina, TV sets for Brionvega, and hi-fi systems and electric organs for Yamaha. For 5 years he worked as an automobile design consultant with Renault. In 1972 he was commissioned to design and build the prototype of the Kar-a-Sutra mobile environment for the exhibition “Italy: the New Domestic Landscape” at the Museum of Modern Art in New York. He has also designed for Fiat and Lancia (notably the interior of the 1980 Lancia Trevi), lamps for Artemide, Erco and Flos, and office furniture for Vitra. Other firms for whom he has designed and/or continues to design products include (in Italy) Acerbis, Bras, Driade, Candy, Castilia, Flou, Kartell, Marcatrè, Meritalia, Natuzzi and Poltrona Frau; (in Belgium) Ideal Standard; (in Germany) Lamy and Rosenthal; (in Japan) Fuji and Zojtrushi; and (in the USA) Heller. MBA's headquarters of some 1,500 sq.m in Milan were designed by Mario Bellini himself in the early 1990s, and today an average of 30 to 35 architects. In 1999, MBA obtained ISO 9001 quality certification.

Since the ‘80s, he has been increasingly successful in the field of architecture in Europe, Japan, the United States, Australia and the Arab Emirates.

Projects built

• Museum of Islamic Arts at Louvre Museum, Paris, 2005-2012

• Museum of the City of Bologna, Italy, 2004-2012

• Urban redevelopment “Verona Forum”, Verona, Italy, 2004–2011

• Radical refurbishment of the Deutsche Bank in Frankfurt, Germany, 2007–2011

• National Gallery of Victoria extension and redevelopment, Melbourne, Australia, 1996–2003

• Essen International Fair Extension, Germany, 1998–2001

• Natuzzi Americas Headquarters, High Point, North Carolina, USA, 1996–1998

• Arsoa Co./Cosmetics- Headquarters, Yamanashi, Japan, 1996–1998

• New fair district of the Milan Trade Fair, 1987–1997

• Risonare Vivre Club Complex, Kobuchizawa, Japan, 1989–1992

• Tokyo Design Center, Tokyo, Japan, 1988–1992

• Yokohama Business Park, Yokohama, Japan, 1987–1991

• Villa Erba Exhibition and Congress Centre, Cernobbio (Como), 1986–1990

• Thermoelectric power plant of Cassano d’Adda-Office building, 1985–1990

Projects under construction

• Milan Convention Centre (MIC plus), Europe’s largest convention centre, 2008

• Architectural project of a large Scientific-Technological Park at Erzelli Hill, Genoa, Italy, 2005

• Extension and redevelopment of the Pinacoteca di Brera Milan (one of the major Italian Art Gallery), 2009

• New Cultural Centre of Turin, 2001 (to be started)

Among the best architectural creations

• New Museum of the city of Berlin, Germany, 2008

• Sheikh Zayed National Museum International Competition, Abu Dhabi, UAE, 2007

• European Patent Office, L’Aja, Holland, 2004

• Cittanova 2000, Modena, Italy, 2003

• Redevelopment of the City Centre of Tian Jin, China, 2003

• Cassa di Risparmio di Firenze-Bank-New H.Q., Italy, 2003

• New International Trade Fair of Milan – Rho/Pero, Milan, 2002

• Multifunctional Complex “MAB. Zeil Project”, Frankfurt, Germany, 2002

• Stolitza Towers, Moscow, 1996

• Dubai Creek Complex, Dubai, United Arab Emirates, 1994

• Goshikidai Marine Resort, Japan, 1993

 

Brionvega is (was) an Italian electronics company, established in Milan in 1945.

Vega, BP Radio, Brionvega, Brion & Pajetta; Milano, Lissone (MI) (I)
Abbreviation: vega
Products: Model types
Summary: Society B.P.M. (1945) Vega - BP Radio (Fabbrica Apparecchi e Accessori Radio, Perito Ind. Brion & Ing. Pajetta)
Via Pacini 59, Milano (1948)
Via Ampère 61, Milano (ca. 1950)
Brionvega Formenti Sèleco Spa
Via Dante Alighieri 43, 20035 Lissone / MI

Good design is no longer simply for an "elite" but is demanded by a far wider audience interested in continuous development.With so many designs and products available, how is it possible to distinguish a truly outstanding design from one that is simply trendy. World famous designers: Hannes Wettstein, Mario Bellini, Richard Sapper, Marco Zanuso, Castiglioni brothers and Ettore Sottsass, have tried to come up with the answer to what constitutes the perfect design. In finding inspiration, when designing for Brionvega, these people look beyond every day fashion and look for examples which are outstanding in their beauty. They also pay attention to people's attitude and how they relate to everyday objects.


Historically speaking, Brionvega is one of the most famous radio and Television manufacturers, thanks to its products, born from the collaboration with well-known design firms. Over the years, from its establishment, Brionvega has made some industrial design corner-stones, such as the radio "cube" TS502 from 1963, the Algol and Doney portable TV, and the radio-phonograph RR126.

 The company was founded in 1945 by Giuseppe Brion and engineer Pajetta. Initially called B.P.M. Company and manufacturing electronic components, the business became known as Brionvega in 1960. In the early 1960s, two unusually designed portable television sets, designed by Marco Zanuso and Richard Sapper, were launched by Brionvega by the names "Doney" (1962) and "Algol" (1964).

Brionvega became famous for a number of exceptional designs (algol, doney, ts502, rr126). A few of their designs found their way into the Museum of Modern Art (MoMA), New York.

2007 DONEY CVT set ( V.Cometti) numbered edition, ALGOL CVT set (V.Cometti) numbered edition,
ALPHA LCD CVT set (V.Cometti)

2002 TVC DOGE 32" (M.Bellini)
1992 GLASS CUBE CVT set (M.Bellini) crystal cubic-shaped television
1992 25" and 28" QUADRO CTV set (M.Bellini) forerunners of the flat screens
1990 15" BEST CTV set (M.Bellini) with triangular rear case
1989 11" ALGOL CTV set (M.Zanuso) newly designed
1988 SINTESI CTV set (R.Lucci-P.Orlandini) with the characteristic orientable loudspeakers
1983 26" CORO PANSOUND CTV set (R.Lucci-P.Orlandini)
1980 23" MEMPHIS CTV set (E.Sottsass) limited series
1980 20" LED CTV set (M.Bellini)
1979 26" ALTA FEDELTA' CTV set (M.Bellini) high audio performance technology
1978 15" MONITOR TV Set (M.Bellini) whose packaging will serve as model for the manufacturing of future PC monitors
1978 15" MONITOR TV Set (M.Bellini) whose packaging will serve as model for the manufacturing of future PC monitors
1969 17" VOLANS TV Set (M.Bellini)
1969 BLACK ST 201 TV Set (M.Zanuso-R.Sapper) first small size TV set designed to be a decorative piece
1968 ASTER TV Set (M.Bellini) sculptural, audio devices in the base
1967 12" DONEY TV Set (M.Zanuso-R.Sapper) evolution of the 14" version
1964 19" SIRIUS TV Set (M.Zanuso)
1964 11" ALGOL TV Set (M.Zanuso-R.Sapper) on display at the MoMA in New York.
1962 14" DONEY TV Set (M.Zanuso-R.Sapper)first transistor portable TV set in Europe, awarded with the Compasso d'Oro.
1961 23" ORION TV Set (M.Albini-F.Helg)
1959 23" CRISTALLO TV Set (R.Bonetto)
1954 Television is becoming widespread.
1945 Giuseppe Brion and engineer Pajetta found the B.P.M. company (initially electronic components), which in the 1960's will become Brionvega, specialized in TV sets.

The BRIONVEGA stylish design is well recognized around the world for it's particularity.
The television here in collection The BRIONVEGA LED TVC 20  is a clear example of that style.

References:

^ "Ex Sèleco a un imprenditore udinese", Articolo del Messaggero Veneto del 18 febbraio 2010

"Brionvega History". Brionvega.tv. Retrieved 18 February 2012.
  "2008 Brionvega reissues". brionvega.tv.
 
"Cuboglass TV History". brionvega.it.

  "Giuseppe Brion", Wikipedia (in Italian), 2022-05-18, retrieved 2022-09-02 "Brionvega". archiviostorico.fondazionefiera.it (in Italian). Retrieved 2022-09-05.


"TS502". Brionvega. Retrieved 2022-09-02.

"Marco Zanuso, Richard Sapper. Radio (model TS 502). 1963 | MoMA". The Museum of Modern Art. Retrieved 2022-09-02.

"Marco Zanuso, Richard Sapper. Doney 14 Television Set. 1962 | MoMA". The Museum of Modern Art. Retrieved 2022-09-01.

"Marco Zanuso, Richard Sapper. Algol 11 Black and White Television. 1964 | MoMA". The Museum of Modern Art. Retrieved 2022-09-01.

"DONEY". ADI Design Museum. Retrieved 2022-09-02.

"Algol 11 before Apollo 11: Sapper and Zanuso's TV Set for Brionvega | Cooper Hewitt, Smithsonian Design Museum". www.cooperhewitt.org. 2017-03-06. Retrieved 2022-09-02.

"Mario Bellini. Totem Stereo System with Detachable Speakers (model RR 130). 1970 | MoMA". The Museum of Modern Art. Retrieved 2022-09-02.

"Designer". Brionvega (in Italian). Retrieved 2022-09-05.

"Cuboglass TV History". brionvega.it.

"2008 Brionvega reissues". brionvega.tv.

External links

• Media related to Brionvega at Wikimedia Commons
• Brionvega Company Website
• Super//Fluo
• Brionvega radio catalogue at Radiomuseum.org