TH94798A - TV receiver - Google Patents

Abstract

DC60 in the way of channel setting process The center frequency is set at 1 MHz steps within the range from the lowest frequency in the VHF band. Of the channel plan Until the highest frequency of the VHF band has been An attempt was made to detect broadcast signals by shifting frequencies within the 1.5 MHz range of the high frequency and 0.5 MHz on the low frequency from the mid frequency. And signal frequency The detectable broadcast is stored in the semiconductor memory. In the direction of the channel setting process The center frequency is set at 1 MHz steps within the range from the lowest frequency in the VHF band. Of the channel plan Until the highest frequency of the VHF band has been An attempt was made to detect broadcast signals by shifting frequencies within the 1.5 MHz range of the high frequency and 0.5 MHz on the low frequency from the mid frequency. And signal frequency The detectable broadcast is stored in the semiconductor memory.

Claims (1)

1. TV tuners have a receiver with synthetic frequency channels. Choose a mechanism that includes A phase-locked loop (PLL) for receiving a television signal using a CCTV system (SECAM) and a pulse television system (PAL), and an integrated circuit (IC) for displaying an image that is Corresponds to the television signal on the screen and for transmitting sound that is consistent with the television signal Out to the speaker contains a receiver, consisting of a high-frequency amplifier for amplifying and transmitting RF signals.