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Class Information
Number: 348/542
Name: Television > Synchronization > Automatic phase or frequency control > Horizontal sync component > Plural distinct operating modes
Description: Subject matter wherein the horizontal phase or frequency control means includes a plurality of distinct operating states.


Sub-classes under this class:

Class Number Class Name Patents
348/543 Line rates 20
348/544 Locking rates 19


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
7532252 Video mode detection circuit May. 12, 2009
7532250 Clock generation apparatus May. 12, 2009
7522216 Video synchronization signal detection circuit Apr. 21, 2009
7471338 Synchronous image signal data generator Dec. 30, 2008
7324160 De-interlacing apparatus with a noise reduction/removal device Jan. 29, 2008
7295248 External synchronous signal generating circuit and phase difference measuring circuit Nov. 13, 2007
7253842 Locking display pixel clock to input frame rate Aug. 7, 2007
7102690 Clock signal synthesizer with multiple frequency outputs and method for synthesizing clock signal Sep. 5, 2006
7061540 Programmable display timing generator Jun. 13, 2006
7009604 Frame detector for use in graphics systems Mar. 7, 2006
6833875 Multi-standard video decoder Dec. 21, 2004
6803965 Method of and apparatus for measuring horizontal frequency Oct. 12, 2004
6801246 Method and apparatus for detecting change in video source material Oct. 5, 2004
6720946 Display device and interface circuit for the display device Apr. 13, 2004
6628254 Display device and interface circuit for the display device Sep. 30, 2003
6577322 Method and apparatus for converting video signal resolution Jun. 10, 2003
6573944 Horizontal synchronization for digital television receiver Jun. 3, 2003
6532042 Clock supply device for use in digital video apparatus Mar. 11, 2003
6515708 Clock generator, and image displaying apparatus and method Feb. 4, 2003
6473134 Television receiver that detects electric field information from a received television signal and stabilizes a detected synchronizing signal according to the electric field information Oct. 29, 2002
6400409 Control of horizontal frequency selection Jun. 4, 2002
6366327 Vertical sync detection and output for video decoder Apr. 2, 2002
6297850 Sync signal generating apparatus and method for a video signal processor Oct. 2, 2001
6233020 Phase lock loop with selectable response May. 15, 2001
6211920 Circuit for the treatment of synchronization signals Apr. 3, 2001
6137537 Television receiver for receiving multi-standards Oct. 24, 2000
6097440 Synchronous processing device Aug. 1, 2000
6052153 Synchronization circuit and methods for screens with scanning circuits that reduce the effects of variations in frequency of an input signal Apr. 18, 2000
6049358 Counter control circuit for controlling counter having a pulse period measuring function Apr. 11, 2000
6037994 Sync signal processing device for combined video appliance Mar. 14, 2000
6009006 Synchronized high voltage generator Dec. 28, 1999
5963268 Semi-wide view display method and device using the same Oct. 5, 1999
5933197 Display device having a video bandwidth controller Aug. 3, 1999
5907368 Information processing apparatus having function capable of displaying image by television signal May. 25, 1999
5808692 Horizontal oscillation circuit for a monitor Sep. 15, 1998
5781185 Display device capable of mode detection and automatic centering Jul. 14, 1998
5764302 Automatic picture-adjusting apparatus of video appliance and method thereof Jun. 9, 1998
5574406 Phase lock loop with error measurement and correction in alternate periods Nov. 12, 1996
5565928 Circuit for generating a scan at a multiple of a synchronizing signal Oct. 15, 1996
5528307 Clock generator Jun. 18, 1996
5495294 Synchronising signal generator Feb. 27, 1996
5486868 Generator for scan timing of multiple industrial standards Jan. 23, 1996
5142204 Broad operational range, automatic device for the change of frequency in the horizontal deflection of multi-synchronization monitors Aug. 25, 1992
5025310 Clock pulse generator capable of being switched to process both standard and non-standard television signals Jun. 18, 1991
5019907 Pulse generating circuit May. 28, 1991
4996596 Phase synchronizing circuit in video signal receiver and method of establishing phase synchronization Feb. 26, 1991
4974081 Clock pulse generating circuit Nov. 27, 1990
4945413 Line synchronization detection circuit Jul. 31, 1990
4926260 Video signal processing circuit May. 15, 1990
4872055 Line synchronizing circuit in a picture display device Oct. 3, 1989

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