Richtige Fernseher haben Röhren!

Richtige Fernseher haben Röhren!

In Brief: On this site you will find pictures and information about some of the electronic, electrical and electrotechnical Obsolete technology relics that the Frank Sharp Private museum has accumulated over the years .
Premise: There are lots of vintage electrical and electronic items that have not survived well or even completely disappeared and forgotten.

Or are not being collected nowadays in proportion to their significance or prevalence in their heyday, this is bad and the main part of the death land. The heavy, ugly sarcophagus; models with few endearing qualities, devices that have some over-riding disadvantage to ownership such as heavy weight,toxicity or inflated value when dismantled, tend to be under-represented by all but the most comprehensive collections and museums. They get relegated to the bottom of the wants list, derided as 'more trouble than they are worth', or just forgotten entirely. As a result, I started to notice gaps in the current representation of the history of electronic and electrical technology to the interested member of the public.

Following this idea around a bit, convinced me that a collection of the peculiar alone could not hope to survive on its own merits, but a museum that gave equal display space to the popular and the unpopular, would bring things to the attention of the average person that he has previously passed by or been shielded from. It's a matter of culture. From this, the Obsolete Technology Tellye Web Museum concept developed and all my other things too. It's an open platform for all electrical Electronic TV technology to have its few, but NOT last, moments of fame in a working, hand-on environment. We'll never own Colossus or Faraday's first transformer, but I can show things that you can't see at the Science Museum, and let you play with things that the Smithsonian can't allow people to touch, because my remit is different.

There was a society once that was the polar opposite of our disposable, junk society. A whole nation was built on the idea of placing quality before quantity in all things. The goal was not “more and newer,” but “better and higher" .This attitude was reflected not only in the manufacturing of material goods, but also in the realms of art and architecture, as well as in the social fabric of everyday life. The goal was for each new cohort of children to stand on a higher level than the preceding cohort: they were to be healthier, stronger, more intelligent, and more vibrant in every way.

The society that prioritized human, social and material quality is a Winner. Truly, it is the high point of all Western civilization. Consequently, its defeat meant the defeat of civilization itself.

Today, the West is headed for the abyss. For the ultimate fate of our disposable society is for that society itself to be disposed of. And this will happen sooner, rather than later.

OLD, but ORIGINAL, Well made, Funny, Not remotely controlled............. and not Made in CHINA.

How to use the site:
- If you landed here via any Search Engine, you will get what you searched for and you can search more using the search this blog feature provided by Google. You can visit more posts scrolling the left blog archive of all posts of the month/year,
or you can click on the main photo-page to start from the main page. Doing so it starts from the most recent post to the older post simple clicking on the Older Post button on the bottom of each page after reading , post after post.

You can even visit all posts, time to time, when reaching the bottom end of each page and click on the Older Post button.

- If you arrived here at the main page via bookmark you can visit all the site scrolling the left blog archive of all posts of the month/year pointing were you want , or more simple You can even visit all blog posts, from newer to older, clicking at the end of each bottom page on the Older Post button.
So you can see all the blog/site content surfing all pages in it.

- The search this blog feature provided by Google is a real search engine. If you're pointing particular things it will search IT for you; or you can place a brand name in the search query at your choice and visit all results page by page. It's useful since the content of the site is very large.

Note that if you don't find what you searched for, try it after a period of time; the site is a never ending job !

Every CRT Television saved let revive knowledge, thoughts, moments of the past life which will never return again.........

Many contemporary "televisions" (more correctly named as displays) would not have this level of staying power, many would ware out or require major services within just five years or less and of course, there is that perennial bug bear of planned obsolescence where components are deliberately designed to fail and, or manufactured with limited edition specificities..... and without considering........picture......sound........quality........
..............The bitterness of poor quality is remembered long after the sweetness of todays funny gadgets low price has faded from memory........ . . . . . .....
Don't forget the past, the end of the world is upon us! Pretty soon it will all turn to dust!

Have big FUN ! !
©2010, 2011, 2012, 2013, 2014 Frank Sharp - You do not have permission to copy photos and words from this blog, and any content may be never used it for auctions or commercial purposes, however feel free to post anything you see here with a courtesy link back, btw a link to the original post here , is mandatory.
All sets and apparates appearing here are property of Engineer Frank Sharp. NOTHING HERE IS FOR SALE !
All posts are presented here for informative, historical and educative purposes as applicable within Fair Use.

Wednesday, October 2, 2013


The XONYCS  COLOUR TV RECEIVER RC4020PS  is a 20 inches (48cm) color television with 90 programs and VST tuning search system.

The set is full Multistandard (PAL - SECAM - NTSC) Multisystem  via AV SCART socket, and features an interesting CTI (color transient Improvement)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 capability, tint correction, auto grey scale, bright pictures, full color.
In the past analog commercial TV transmission standards, the limited bandwidth of the transmitted chrominance (or chrominance difference) signals causes the received images to have perceptibly blurred colour transition edges. This is especially evident if the received image contains geometrical patterns, e.g. test-colour bars, and results in the loss of detail detectable in complex multicoloured fine patterns.

In order to improve the quality of the received images, it is necessary to provide the receiver end with circuits capable of restoring, as far as possible, the frequency components in the chrominance signals which have been filtered away by the requirements of the reduced transmission bandwidth: in this way, the temporal duration of the chrominance transition edges, and thus the spatial extent of the chrominance transitions on the TV screen, can be reduced, and the edge definition improved. Circuits of this type are called "Color Transient Improvement" ("CTI") or Chrominance Transition Enhancement circuits.

An important constraint on chrominance transition enhancement circuits is the need to ensure that the center of the chrominance transition is unaffected by the enhancement process, so that the center of the chrominance transition after the enhancement process is still aligned with the center of the associated transition in the luminance signal. Also, it is necessary to leave gradual transitions in time unaltered; preserve, and possibly enhance, fine patterns; prevent the introduction in the image of additional distortions; and ensure that the existing noise components are not accentuated.
The present invention relates to an automatic mode detection for a TV broadcasting system (a broadcast system automatic-discriminating apparatus) which is provided in a multiple-system television receiver, automatically discriminates the television signals (TV signals) of different broadcast systems, and performs reception.
A multiple-system television receiver, so as to deal with the different TV broadcast systems, for example, the NTSC broadcast system used in Japan, the PAL broadcast system used in Germany, the South American area, etc., the SECAM broadcast system used in France, etc. must discriminate the broadcast system by a certain means and operate the video receiver differently in accordance with each broadcast system.
Particularly in an area where TV signals of a plurality of broadcast systems can be received, in order to enable the viewer to watch the TV program without having to be concerned with the broadcast system, it is necessary to provide a broadcast system automatic-discriminating apparatus in which the broadcast system can be automatically discriminated on the TV receiver side, automatically discriminate the TV signals of the respective broadcast systems, and perform signal processing with respect to the TV signals by the methods in accordance with them.
In general, this type of broadcast system automatic-discriminating apparatus performs the automatic discrimination of the broadcast system according to the difference of the frequencies of the color sub-carrier waves (SC) provided for transferring the information of color in the TV signals of the respective broadcast systems.

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 !

It has a basic OSD (PHILIPS VST uC). with voltage synthesis tuning system with digital memory, in particular for a television transmissions receiver, wherein a plurality of digital codes, each respectively identifying a television channel, are memorised in a digital tuning memory, to a corresponding plurality of addresses, with an automatic tuning circuit, and with means for modifying the respective digital code, in the presence of frequency drift phenomenons, exceeding the pull-in range of such automatic tuning circuit; the main characteristic of the invention consists in that the system searches the television station modifying the digital tuning code and simultaneously verifying the presence of a station identification signal; and that the exact tuning is obtained verifying a high slope signal coming from the automatic tuning circuit.
Generally, a tuner includes a tuning circuit, a mixer and an oscillator. The tuning circuit is tuned to a radio frequency signal of a bandwidth which is selected by a user among a plurality of broadcasting signals which are received via an antenna, and outputs the tuned radio frequency signal to the mixer. The oscillator generates a continuous wave which is equivalent to the radio frequency signal which is tuned by the tuning circuit. The mixer mixes the tuned radio frequency signal from the tuning circuit with the continuous wave signal from the oscillator, and outputs an intermediate frequency signal. Most of the tuning circuits have a function of varying a tuning frequency by using a varactor diode in order to be tuned to a specific bandwidth of the radio frequency signal.
In the tuning circuit which includes the varactor diode, the tuning frequency is tuned by applying a tuning voltage which is equivalent to a specific frequency to the varactor diode. The tuning voltage which is applied to the tuning circuit is discretely distributed on the basis of assigned channels. Thus, in order to change the tuning frequency of the tuning circuit, i.e., the channel of the tuner, the tuning circuit can be tuned to each of the channel frequencies by discretely providing the tuning voltage to both terminals of the varactor diode of the tuning circuit.
On screen display (OSD) arrangements employed in video processing systems include a switching (or "multiplexing") network for switching between graphic image representative signals and normal video signals so that a graphic image can be displayed on the screen of a picture reproduction device either in place of the image represented by the video signals or together with (inserted in) the image. The graphic image can take the form of alphanumeric symbols or-pictorial graphics, and can be used to indicate status information, such as channel numbers or time, or operating instructions.

In an OSD arrangement for use in an analog video signal processing system, the multiplexing network typically operates to switch in levels corresponding to the desired intensity of respective portions of the graphic image at the time the graphic image portions are to be displayed. In such an arrangement the graphic image representative signals take the form of timing pulses which occur when the graphic image portions are to be displayed and are used to control the multiplexing network. Such an analog OSD arrangement can also be used in a digital video processing system, but requires that the video signals be first converted to analog form. While digital video signal processing systems typically include a digital-to-analog converter section in which the digital video signals are converted to analog form, it may be more cost effective for the OSD arrangement to be incorporated as an integral part of the digital video processing section.
Front commands are present replacing almost all remote control functions.

The XONYCS  COLOUR TV RECEIVER 20"  is fabricated by a chinese factory RECOR (Defunct) and was sold at fair low price in supermarkets for a low batch number of sets for a brief period of time (Price offer). Therefore  the set is almost unknown by brand name and model and almost extint.

The set is internally looking like almost a chinese pocket radio but all semiconductors technology is completely based on PHILIPS Chipset. (it can be easy controlled by any PHILIPS RC5 remote).

In 1993 European & Japan TV fabricants were concentrated to feature the best set with top multiple types of features even in relatively small sets.

This here today is an example of cheap set with interesting features in a very low cheap market sector.

And even if it was an irrelevant  set it has really cracking pictures ways more better than any modern LCD crap lying around.

The critical part was the Line deflection output which was frequently faulty toghether with PSU (which have had the habit to rise up the supply  voltages), and with some resistors sometime going crazy around the chassis, anyway  many of them were running 10 or even 12 Hours a day without any issue for 10 15 years until the owners scrapped them.

(I noticed that some ex owners of  this tellye are still remembering it  todays by model and brand name )

The set features a SAMSUNG CRT TUBE.

From what I know, both brand name (XONYCS) and manufacturer (RECOR) are long Defunct !

1 comment:

  1. great info man. i have that tv, it has a vertical deflection problem, im trying to fix it. in Argentine they sell it by the name Crown.


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