TH6511B - Mono FM radio, TV tuner - Google Patents

Abstract

TV tuner including single tuner For tuning both television channels and FM radio broadcasting systems. The tuner is treated with constant gain. that is adjusted in the form of FM reception The tuner will act as the conversion sector. The first part of the dual-conversion FM receiver. The mixer portion of the FM radio integrated circuit acts as the second conversion sector. The practice will be performed at the first, unique and appropriate IF frequencies. The FM receiver can also receive National Weather Forecasts broadcasting on one of the NWS' seven designated frequencies, which are Frequency while performing duty in the listener's area This receiver is also configured to have a monitor display. which displays the number of FM channels currently being tuned in.

Claims (8)

1. A television receiver consists of a tuner path for performing its functions in a first-of-its-kind manner. To receive the RF television signal the way of such a tuner It selects a specific TV RF signal from a large number of TV RF signals in response to the control signal. It converts the selected TV RF signal into the center frequency signal. Intermediate Frequency (IF) signal processing pathway to receive the intermediate frequency signal of the converted television signal. And amplify the said signal The Intermediate Frequency (IF) signal processing path includes the Audio Frequency Signal (SIF) pathway to receive and process audio signals at the intermediate frequencies of the television carriers. Way of such tuner For performing duties as a second method of practice in the first frequency conversion sector. For the dual conversion FM radio receiver to receive the FR signal. The tuner method selects a specific FM radio RF signal from many FM radio RF signals in response to such control signals. And to convert such specific RF radio broadcast signals into one part of the intermediate frequency Way of control To cause such a control signal to make the way of such tuner Choose one from the signs The aforementioned RF TV and such dedicated RF radio broadcasting signals The second frequency conversion segment of the double-converted FM radio receiver. And the second frequency conversion sector Will receive the said FM radio signal at the middle frequency part of the aforementioned And converting the radio signal to FM broadcasting at the middle frequency part of the aforementioned To the second intermediate frequency The second such intermediate frequency The intermediate frequency of the sound between such television carriers and the SIF signal processing path receives the said FM radio broadcast at that second intermediate frequency. To process and include a path for demodulation The sound signal from the said signal at the second such intermediate frequency 2. Television receiver according to claim 1, where the medium frequency signal processing path of such sound receives television audio signals. When the tuner method performs the function in the aforementioned style of practice and receives the FM radio signal when the tuner method performs its function. The second one. 3. TV receiver according to claim 2, where the center frequency of the sound between the said television sets is 4.5 MHz. 4. TV receiver according to claim 1, where, in response to the choice of the second form of action, Such a control method allows the television set to generate a video signal. Which, when displayed on the display, will produce a consistent color display 5. TV receiver according to claim 4, where the consistent color is black 6. Television receiver under claim 1, where during the specified period of the second form The television receiver generates a video signal. Which, when displayed, will occur as an indicative character FM radio stations that were tuned at that time. 7. Television receiver pursuant to claim 1 where, during the specified period of the second operating format, the television receiver generates a video signal. Which, when shown on the display, spawns the characters that indicate The FM radio station that is currently tuned and while maintaining the second operating pattern will generate a signal which when shown on the display. Will cause a consistent empty impression. 8. A television receiver consists of the tuner path for performing its functions in the first form of practice. To receive the RF television signal the way of such a tuner It selects a specific TV RF signal from a large number of TV RF signals in response to the control signal. And converts the selected RF signal into The medium frequency signal of the television signal (IF). The path for the demodulation of the IF television signal to form a television audio signal. The way of such a tuner It also operates as a second practice model in the first frequency conversion sector. For dual-conversion FM monophone broadcasting receiver To receive RF signals, radio broadcasting, FM The tuner method selects a specific FM broadcast radio RF signal from many FM radio RF signals in response to such control signals. And to convert such specific RF radio broadcast signals into one part of the intermediate frequency Way of control To cause such control signals For making the way of such a tuner Choose one from the aforementioned TV-specific RF signal and that specific FM-radio RF signal. The second frequency conversion segment of the FM monophone radio receiver. Such double conversion The second frequency conversion segment receives the said FM radio signal at the said middle frequency. And convert the said signal into the second intermediate frequency The second medium frequency is the middle frequency of sound between television carriers. The path for the modulation of the audio signal from the said signal at such high mid frequencies. To produce the aforementioned pre-modulated television audio signal and the modulated FM monophone signal in the aforementioned form of the second practice, and the second method. For expanding and producing one of the said television audio signals And FM audio signal that has been modulated as such