Abstract: A wide aspect ratio television system includes memories for storing and recovering a video input signal in response to read and write clock pulses, respectively. Write clock pulses are deleted to compress edge regions of a wide aspect ratio input signal and read clock pulses are deleted to restore the signal to its original aspect ratio. The pattern of delected pulses is altered on a line-by-line basis to reduce visible artifacts of signal decimation. Dual mode receivers include provisions for controlling edge blanking, interpolation and the pattern of clock pulses deleted as a function of received signals. Wide and standard aspect ratio images are displayed without altering the width of the display raster.

Abstract: A field comb filter for separating luminance signal from NTSC composite video additively combines signals separated by 263 horizontal lines. Vertical detail is restored and motion compensation provided by subtractively combining signal separated by 262 horizontal lines and adding the difference to the separated luminance signal.

Abstract: A video signal is serially enclosed for transmission in PCM form during synchronizing level intervals and encoded in a run length limited NRZ form during non-synchronizing level intervals, each PCM word being selected from minimum and maximum disallowed states of the NRZ code. In a decoder, a first detector responds only to the presence of the PCM code for synchronizing a second detector with response to both the NRZ and PCM coded portions of the encoded video signal to provide a decoded video output signal whereby the PCM portion of the signal conveys both decoder timing information and information as to a specific level of the video signal.

Abstract: A filter for use with a CCD imager has vertical color stripes that have a non-integral relationship to the CCD sensors. A means for controlling the amount of a particular color that falls on a particular photosensor suppresses undesired signals.

Abstract: A push-pull pair of output transistors provides trace current to a vertical deflection winding. A retrace capacitor forms a resonant retrace circuit with the deflection winding to develop a resonant retrace current in the deflection winding. A damping circuit coupled to the deflection winding damps unwanted oscillations of the trace current. A diode disconnect functions to prevent the resonant retrace current from flowing in both the output stage and in the damping circuit, thereby reducing undesirable dissipation in the vertical deflection circuit.