TH6372B - The use of the first center frequency of 43.5 MHz or less on the FM radio in the tuner of the television. - Google Patents

Abstract

television receiver Includes a single tuner for tuning TV channels. and the FM station used to spread out The tuner was made work with a given rate of growth which is adjusted in the FM receiving mode The tuner acts as a converter sector. Part one of the multiplicative FM receiver, where the mixer of the FM radio integrated circuit Acting as a second converter, such placement will operate at the first IF frequencies specific to and not specific to the FM receivers, which can be used to receive broadcasts from the National Broadcasting Service (NWS). Automatically at one of the seven preset frequencies of the NWS operating in the listener's area, the receiver will display on the screen the number of FM system channels being tuned.

Claims (3)

1. Television receiver Contains the tuner path. For working in the first mode to receive the RF signal of the television such tuner way. Selects a specific television RF signal from a number of television RF signals. response to control signals A control path for producing such a control signal, so that the tuner path selects that specific RF signal. The above tuner path also works in the second mod as a converter. The first frequency For radio receivers using multiplicative propagation systems. To receive the R7 signal of the FM radio broadcasting system. famous tuner It selects the RF signal of the specific FM radio system used to propagate from the RF signal of the FM radio system that is used to propagate the number. One of the responses to the control signal and to convert the RF signal of the specific FM radio system used to propagate it. to the first center frequency The second frequency converter sector of the FM radio receiver used for propagation with such multiplicative conversion. will receive an FM radio signal at used to propagate it at one of the aforementioned intermediate frequencies and to convert the FM radio signal used for such propagation at The second center frequencies and the path for the audio signal demodulation from the F radio signal Such emits at such second center frequencies and where such first center frequencies will be 43.3 MHz. 2. The television receiver consists of the tuner method. For working in the first mode to receive the RF signal of the television such tuner way. Selects a specific television RF signal from a number of television RF signals. response to control signals A control path for producing such a control signal, so that the tuner path selects that specific RF signal. The above tuner path also works in the second mod as a converter. The first frequency For radio receivers using multiplicative propagation FM broadcasting systems. To receive the R7 signal of the FM radio broadcasting system. famous tuner It selects the RF signal of the specific FM radio system used to propagate from the RF signal of the FM radio system that is used to propagate the number. One of the responses to the control signal and to convert the RF signal of the specific FM radio system used to propagate it. to the first center frequency The second frequency converter sector of the FM radio receiver used for propagation with such multiplicative conversion. will receive an FM radio signal at used to propagate it at one of the aforementioned intermediate frequencies and to convert the FM radio signal used for such propagation at The second center frequencies and the path for audio demodulation from the F radio signal such propagating m at the aforementioned second intermediate frequencies and where That first center frequency would be 4. 3.3 MHz and over 42.17 MHz (2 claims, 2 pages, 6 photos)