Television set tuner with clock output

Abstract

The invention discloses a TV set tuner with clock out which solves problem of outputting a crystal oscillator clock signal of the TV set tuner to a peripheral circuit for saving resource and reducing cost. The invention uses a technical solution as follows: a TV set tuner with clock out including a TV set tuner is equipped with an decode chip in inside, the decode chip links with the crystal oscillator circuit, an oscillation signal of the crystal oscillator circuit is outputted through emitter follower circuit. Compared with the prior art, the TV set tuner outputs the clock signal in the tuner using the emitter follower for providing to external circuitry, the circuit board is compact, and can save resource and reduce cost.

Description

technical field [0001] The invention relates to a TV set, in particular to a TV tuner. Background technique [0002] The internal crystal oscillator of the prior art TV tuner only provides oscillation signals to its own decoding chip, but often cannot provide clock signals to other external circuits. When other external circuits use clock signals, they need to complete this function through an external clock signal module. , not only the cost is high, but also it is not suitable for use in the scheme with compact board surface. Contents of the invention [0003] The purpose of the present invention is to provide a TV tuner with clock output. The problem to be solved is to output the crystal oscillator clock signal of the TV tuner to peripheral circuits, so as to save resources and reduce costs. [0004] The present invention adopts the following technical solutions: a TV tuner with clock output, including a TV tuner, the TV tuner is provided with a decoding chip, the deco...

AI Technical Summary

Problems solved by technology

[0002] The internal crystal oscillator of the prior art TV tuner only provides oscillation signals to its own decoding chip, but often cannot provide clock signals to other external circuits. When other external circuits use clock signals, they need to complete this function through an external clock signal module. , not only high cost, but also not suitable for use in compact board solutions

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