Device for the electro-optical display of the tuning of a television and/or sound radio receiver
AssigneeBBC Brown, Boveri & Company, Limited
InventorsOle Snedkerud, Peter J. Wild
Life of this patent
Estimating the term…
Abstract
A device for the electro-optical display of the tuning of an electromagnetic wave receiver, such as a television or a radio, wherein the frequency of a received electromagnetic signal is measured and converted into a digital representation, which is applied to the input of a memory as the address of the various preprogrammed names of selected transmitting stations. The output of the memory is applied to select appropriate display elements of an electro-optical display and the selected display elements are then excited to provide a display indicative of the name or call letters of the transmitter station corresponding to the tuned receiver signal.
Claims11
A device for the display of the name of a transmitter transmitting electromagnetic waves which are received by a receiver, such as a television or a radio, comprising:
- a first circuit for directly measuring the frequency of incoming electromagnetic waves to which said receiver is tuned;
- an electro-optical display for displaying the name of the transmitter corresponding to the tuned electromagnetic waves received;
- a memory having an input connected to an output of said first circuit, and an output, said memory comprising a plurality of memory blocks, a name of a transmitter being stored in each memory block;
- display excitation means having an input connected to the output of said memory and an output connected to said electro-optical display for producing the excitation of the electro-optical display;
- a second circuit measuring the amplitude of the tuned electromagnetic radiation received and for activating the electro-optical display only in the event that the measured amplitude of the tuned electromagnetic waves received exceeds a predetermined threshold;
- wherein the output signal of the first circuit is used as the address of a memory block and the contents of the addressed memory block are coupled, for control of the electro-optical display, to the input of the display excitation means.
Dependencies are inferred from the claim text.