TH20527B - Optional image splitter - Google Patents

Abstract

The splitter for deleting the auxiliary image data from the video signal adjusts the separation level to the size of the data signal displayed by the average clock-in (RIC) signal that is included in the video signal. The control of the isolation level takes place during the interval covering the number of cycles of the RIC signal. The occurrence of the RIC signal within the interval is part of the separation level. The splitter is suitable for use in digital integrated circuits.

Claims (5)

1. An optional decoding device for extracting data from the incoming video signal. An amplifier (213) with an input point (A) for receiving the incoming video signal. And there is an exit point for arranging the output signal (DSOUT), and the feedback-controlled charge path (211,212,215) is connected to such an amplifier for DC leveling of such. It has the property that the charge path regulated by the feed consists of (i) a negative feedback circuit. (212,215) connected between the exits of the expander And enter the point (A) of the expander The circuit includes a switch. (215) for self-bias of the entry point (A) of the said dealer when the switch part is closed and (ii) the switch control path (200) for closing the switch path. A (215) during the clock segment. (RIC) of the incoming video signal. 2. The device, as mentioned in claim 1, also has a unique feature that Continuous switch path (230) that responds when turned off for entering the rated pressure (VINIT) to the entry point (A) of the amplifier (213) The rated pressure is constant rated as equal to the set-pressure property of the amplifier. And the path (200) for closing the aforementioned continuous switching path (230) during the period of such video signal is closely preceded by the clock signal (RIC) portion of the incoming video signal. 3.The device, as mentioned in one of the previous claims, also qualifies as A monitoring path (220) that responds to the outgoing signal of the amplifier (213) for providing a display signal (CNTVAL) that is used to verify the presence of the clock portion of the incoming video signal. say 4. The device, as mentioned in one of the previous claims, also qualifies as The amplifier (213) consists of a non-inverting buffer amplifier (213) and a switch path. In the aforementioned negative feedback circuit, a 3-state reversal buffer (215) with 3-state input points is connected to receive a 3-state control signal from the switch control path (200). 5.The device, as mentioned in one of the previous claims, also qualifies as The switch control path (200) turns off the switch for self-biasing of the amplifier (213) for a period equal to the integer cycle of the clock portion of the video signal. Sent in