Patent ID: 6396542
Filing Date: 2002-05-28
Classification: H04N

Abstract:
A television receiver comprising:a kinescope, having a display screen with a 16:9 aspect ratio, having phosphors arranged on the back of said display screen with a dot pitch for displaying a 480 scan line frame, and having at least one electron gun for projecting a respective electron beam on the back of said display screen; a respective kinescope drive amplifier for each said electron gun; deflection circuitry for scanning each said electron beam across the back of said display screen of said kinescope in a raster scanning pattern with a 16:9 aspect ratio having substantially 240 active lines per field of a two-field frame with the scan lines of the two fields being interlaced with each other; a tuner for receiving high-definition television signals; high-definition television signal detection circuitry for detecting digitally encoded signals from the modulation of digital high-definition television signals received by said tuner; high-definition television signal decoder circuitry for decoding the digitally encoded signals to supply raster-scanned video signals, for providing high-definition-television horizontal synchronizing pulses, and for providing high-definition-television vertical synchronizing pulses for application to said deflection circuitry to control the beginning of vertical scanning in said raster scanning pattern; pulse rate divider circuitry for dividing the rate of said high-definition-television horizontal synchronizing pulses to generate rate-divided high-definition-television horizontal synchronizing pulses, occurring at substantially the same rate as normal-definition horizontal synchronizing pulses, for application to said deflection circuitry to control the beginning of horizontal scanning in said raster scanning pattern; and scan converter circuitry responsive to the video signals decoded by said high-definition television signal decoder circuitry to generate a respective scan-converted video signal for application to each said kinescope drive amplifier.