Computer controlled television receiver with display

Details Computer controlled television receiver with display Computer controlled television receiver with display

1979-06-25

1982-01-26

Ng, Jin F.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

455183, 455186, 3581921, H04B 116, H04N 550

Patent

active

043132138

ABSTRACT:
A circuit arrangement for selecting a radioelectric signal from a number of signals receivable by a signal receiver equipped with a character display device to enable at least two selection modes of the radioelectric signal. The circuit arrangement has a controllable oscillator, the frequency of which is determined by a control loop depending on a binary number N supplied by a processing unit on the basis of code input data. The control loop has frequency dividing means providing a first signal from the controllable oscillator depending on the number N and the comparator for comparing the first signal with a second frequency reference signal to provide a third signal for the required tuning. A memory circuit has a number of cells for digital storage of data relevant to the signals being tuned into. The said number N can be supplied both in direct response to the coded input data or by calling up data from the memory circuit. On request, by using the display device the overall situation of the memory circuit can be displayed so as to keep the user informed as to which signals have been memorized and which and how many of the memory cells are available.

REFERENCES:
patent: 3882400 (1975-05-01), Hamada
UK Patent Application GB 2,003,683, 3/1979.
"Electronics Design", vol. 25, No. 3, 2/1/77.

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