DE2423716A1 - TELEVISION RECEIVER - Google Patents

Description

PATENTANWÄLTE 39 Λ-iasburg «, d« n 15 · 5

dr. .ng. E. LIEBAU ^Rilk "" * ⁹ * ¹⁰

DIPL. ING. G. LIEBAU (please state your reply)

Your sign

Thorn Electrical Industries Limited Thorn House, Upper Saint Martin's Lane

London WC2H 9ED / England

Television receiver

The invention relates to television receivers,

For the convenience of the television receiver user, it is desirable that the volume settings, the image brightness and color saturation (if it is a color TV) by remote control Use of a wireless switching element can be made. The wireless transmitter usually only sends one Signal during the actual process of changing the settings and the transmitted information must then

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retained by the recipient until the next Change is made. If necessary, the settings can be made using controls on the front of the device. In either case, the control signals go out every time the device is turned off, lost.

According to the invention, such a receiver is provided with a digital data memory, for example in the form of a Equipped with a binary counter, which is used to record control signals and hold the recorded value, until another signal is received, and a rechargeable battery to power the memory.

An embodiment of the invention is described below described in more detail in connection with the accompanying drawing, which is a block diagram of part of a Color television receiver according to the invention shows.

In the drawing, an ultrasonic receiver and decoder 10 is connected to a microphone 12 and has six outputs 14A, 14B, 16A, 16B, 18A and 18B. The receiver 10 is built according to the guidelines that are described in an article by B, Viereck entitled "A color television set without control buttons ^M in the magazine Funkschau, Volume 23, 1972, pages 855-857. The outputs IHA and IUB are the Volume setting, the outputs 16A and 16B the brightness and the outputs 18A and 18B the saturation In each case a signal on the "A" output represents a desired gain and a signal on the "B" output a desired attenuation of the Setting.

Three 6-bit forward-backward binary counters 20, 22 and 24 are

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connected to the output pairs of the receiver 10. The outputs of the counters are three digital to analog converters in parallel 26, 28 and 30 supplied. The outputs of these converters provide analog voltage control signals for volume, Image brightness or color saturation.

The three counters 20, 22 and 24 are fed by a rechargeable battery 32. The counters therefore keep theirs Counting even if the device is switched off from the mains. The battery 32 is always used when the device is restored switched on, charged by a rectifier circuit, not shown, but generally by the Reference number 38, a diode 34 and a charging resistor 36 is indicated. The diode 34 prevents a Discharge of the battery by the mains takes place when the device is switched off. By the use of Counters instead of other storage methods that require high-resistance circuit points to be stored in the course of the Time are subject to wastage, the setting can be kept in the memory as long as the battery continues to feed the stores. The battery discharge can be so low that it can take several months to before charging.

Therefore, if, for example, the volume level is to be changed, a signal is sent out, which for the The result is that a signal occurs at output 14A or 14B. If an upward signal occurs at output 14A, the counter 20 begins to count up, which process is continued linearly with time until the transmitted Signal stops or the counter becomes full (which corresponds to the highest volume). The binary number will be off read from the meter and converted to analog form,

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to operate the control circuits of the device.

The DC output voltage is one of 64 values, so that 64 volume levels are possible. An increase the size of the counters allows an increase in the number of possible settings,

When the device is switched off, the settings in the counters are retained and continue to do so powered by the battery 32. When the device is switched on again, the volume, the brightness and saturation settings are therefore the same as when switching off. The battery 32 is also charged.

The arrangement is preferably such that if the battery fails or is disconnected, the in the Counters set values experience a presetting to a certain normal value, for example by the middle of their operating range, i.e. in the 50% position. When the device is switched on, the counters are preset to the specific values being fed directly from source 38. The remote control signals then operate the counters for normal control of the settings.

The receiver can also have control elements on its front side be equipped. These controls are connected to the inputs of the counters in parallel to the output of the receiver 10. In this hurry When the wireless controller is not in use, you can adjust the settings using these manual controls be changed. You can take the form of Wideretande tactile elements or in the form of light pressure

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have appealing switch contacts that connect a potential to the respective counter input.

In another arrangement, the recipient can use such manual operating org ane alone, omitting the Microphone 12 and the receiver 10 be adjustable.

In the case of a black-and-white receiver, the counter belonging to the color saturation and the converter belonging to it are 2H 30 omitted.

Claims;

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Claims (1)

Claims Television receiver, characterized by a digital data memory (30) for receiving control signals and maintaining a received value until another signal is received and a chargeable one Battery (32) for supplying the memory. 2, receiver according to claim 1, characterized in that the data memory is in the form of an up-down binary counter (20) has. 3, receiver according to claim 1 or 2, characterized by a wireless receiver and decoder (10) for providing the control signals. Receiver according to claim 3, characterized in that the wireless receiver is an ultrasonic receiver (10) is. S, receiver according to claim I ₁ 2, 3 or H, characterized in that a number of data memories are assigned to the various receivers rs teu- • vorganen. 409849/0871.