TH18203A - Circuit for the detection of television signals. - Google Patents

Abstract

Circuit for the detection of television signals in television receivers for the purpose of this invention Is to show images that are not Vibrating flickering on the TV screen disappears. Or there is noise, as shown in Figure 1. A detector which detects the presence of an entry pulse. TV timing (SYS) through distant search method (SEARCH) that occurs when a rectangular signal (PHI 1 PHI1) is in a non-rhythmic state during the first half (T1 T1) of Signal and the absence of pulses during the second half, where the detector subsequently excites an additional static electricity source (I2 I2) for the specified time (t) at the input terminal of the Integrae. Router (INT, INT) to increase the force. The output voltage by adding (du) a value, and when the condition This is not being loved. Catch will switch to increase the source of electricity. To obtain a larger current, it flows in the opposite direction to set up a new integrator.

Claims (1)

1. A circuit for the detection of television signals in a television set in which the phase-locked loop (PLL) is synchronized. Rectangular frequency, both frequency and phase to match the TV signal. With a circuit in which the loop switches around the lock phase opposite To rectangular signal At a stable frequency by Using a charged integrator and Discharge with a constant source of electricity while pulse For the timing signal The TV is overlapped with a rectangular horizontal frequency signal so that a specific shift start threshold is given at the tag: