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| Number | Title | Issue Date |
| 7061540 | Programmable display timing generator A display timing generator is provided for selecting line types and providing synchronization timing signals for video signals. The display timing generator provides programmability for the user to select line types for a frame to be displayed on a display. The line... | 06/13/2006 |
| 6947060 | Image forming apparatus, electron beam apparatus, modulation circuit, and image-forming apparatus driving method An image forming apparatus which performs pulsewidth modulation with a pulsewidth set by counting a clock. Especially, for grayscale level correction by setting the frequency of the clock, the periodic clock is counted, and an output pattern is changed in accordance... | 09/20/2005 |
| 6909428 | Signal converter device The present invention provides a device for signal transfer, which outputs a treatment signal relating to a vertical-horizontal composite sync signal of a monitor and an integrated signal of the vertical-horizontal composite sync signal. There is a plurality of logi... | 06/21/2005 |
| 6839092 | Feed forward error correction in video decoder In accordance with an embodiment of the present invention a microprocessor in the horizontal phased lock loop reads the horizontal timing with respect to the sync input and provides an increment inch to the horizontal discrete time oscillator to make corr... | 01/04/2005 |
| 6803965 | Method of and apparatus for measuring horizontal frequency A method of measuring horizontal frequency, which comprises the steps of resetting an 8-bit counter, which counts horizontal synchronous pulses separated from a video signal, at a time point corresponding to an edge of a vertical synchronous signal separated from th... | 10/12/2004 |
| RE38618 | Method and apparatus for automatic pixel clock phase and frequency correction in analog to digital video signal conversion A method for producing a digital video signal from an analog video signal, the analog video signal including an analog video data signal that is raster scanned in lines across a CRT screen to form consecutive frames of video information, the raster scanning controll... | 10/12/2004 |
| 6720946 | Display device and interface circuit for the display device The present invention is directed to a display device such as a liquid crystal display including: a horizontal clock counter and a vertical clock counter which count each clock signal every horizontal cycle and every vertical cycle for a valid data period of a data ... | 04/13/2004 |
| 6628254 | Display device and interface circuit for the display device The present invention is directed to a display device such as a liquid crystal display including: a horizontal clock counter and a vertical clock counter which count each clock signal every horizontal cycle and every vertical cycle for a valid data period... | 09/30/2003 |
| 6577322 | Method and apparatus for converting video signal resolution A method and apparatus for converting a digital video signal, to a signal having a resolution that matches a display device, by using simple hardware alone. When a digital video signal is input together with a data enable (DE) signal and a dot clock (DCLK... | 06/10/2003 |
| 6400409 | Control of horizontal frequency selection An apparatus displays pictures from sources having a plurality of horizontal frequencies. A scanning generator is operable at the plurality of frequencies and comprises an oscillator generating a signal. A divider with two selectable counts is coupled to ... | 06/04/2002 |
| 6233020 | Phase lock loop with selectable response A video display apparatus for pictures from broadcast sources having standard or high definition, which may also display computer generated images. To display this range of sources a horizontal frequency signal generator is selectably operable at a plural... | 05/15/2001 |
| 6177959 | Circuit and method for generating a clock signal synchronized with time reference signals associated with television signals A clock generation circuit for use in a television system displaying images encoded in television signals and images represented by network application data. The clock generation circuit generates a clock signal synchronized with HSYNC signals of the tele... | 01/23/2001 |
| 5929924 | Portable PC simultaneously displaying on a flat-panel display and on an external NTSC/PAL TV using line buffer with variable horizontal-line rate during vertical blanking period A scan converter receives VGA or SVGA graphics data and outputs NTSC or PAL TV data. The scan converter is integrated inside a personal computer's graphics controller, allowing the digital-to-analog converter (DAC) to be used for either CRT-pixel conversi... | 07/27/1999 |
| 5872601 | Circuit arrangement for automatically recognizing the line standard of a video sync signal A circuit arrangement for automatically recognizing the line number of a video sync signal in accordance with the 525 or 625 line standard, this circuit arrangement automatically generating a control signal corresponding to one of the relevant line number... | 02/16/1999 |
| 5812210 | Display apparatus A display apparatus capable of receiving and displaying video signals which differ in scanning frequencies or resolutions. The display apparatus includes an input section for receiving at least one video signal and a conversion unit for converting at leas... | 09/22/1998 |
| 5808692 | Horizontal oscillation circuit for a monitor Disclosed is a horizontal oscillation circuit for a monitor performing a stable oscillation even at the start input such as a power input or a mode change. The horizontal oscillation circuit for a monitor includes an operation voltage delaying part for de... | 09/15/1998 |
| 5767917 | Method and apparatus for multi-standard digital television synchronization An apparatus for automatically synchronizing a video system to one of a plurality of composite synchronizing signals in accordance with a plurality of known video formats, includes a number of synchronizing signal stripper circuits, corresponding, respect... | 06/16/1998 |
| 5764302 | Automatic picture-adjusting apparatus of video appliance and method thereof Apparatus and method for automatically adjusting a picture size of a video appliance such as a monitor. According to the apparatus and method, since electrical characteristic data of the video appliance employing the apparatus of the present invention is ... | 06/09/1998 |
| 5657090 | Circuit arrangement for the digital identification of a transmission standard A circuit arrangement for the digital identification of television transmission standards, particularly PAL, SECAM and NTSC. Provision is made for transmission standard demodulation stages connected in parallel to which a signal composed of a chromaticity... | 08/12/1997 |
| 5589891 | Video synchronized power module The synchronized transformer-coupled power supply circuit includes a transformer 20; an input power signal coupled to a primary winding 22 of the transformer 20; voltage regulators 48-53 coupled to secondary windings 24 and 26 of the transformer 20; and a... | 12/31/1996 |
| 5541556 | Clock recovery circuit for serial digital video A control circuit for use with a phase locked loop in a digital video receiver. The digital receiver accepts a serial digital input signal which can comprise composite or component video signals. The phase locked loop comprises a phase detector, a loop fi... | 07/30/1996 |
| 5124792 | Multiscan receiver with ordered changeover of operating parameters In a television receiver, a change in a horizontal frequency of an input television signal between a high frequency and a low frequency is detected. A horizontal oscillation frequency, a horizontal deflection drive pulse width, and a horizontal blanking p... | 06/23/1992 |
| 4684987 | CRT display unit A CRT display unit comprises a line mode detecting circuit (17) for determining a standard mode or a high-resolution mode dependent on the output of a counter (179) counting a horizontal synchronizing signal. When the high-resolution mode is determined, a... | 08/04/1987 |
| 4679091 | Multiple scanning type television receiver A television receiver having a video signal receiving circuit for receiving a video signal, a vertical synchronizing signal and a horizontal synchronizing signal, a signal processing circuit for supplying the video signal to a cathode ray tube, a vertical... | 07/07/1987 |
| 4575757 | PAL offset generator A color subcarrier generator for PAL uses a one-quarter horizontal frequency signal from a sync generator to sample the subcarrier signal. The sampled signal is phase and frequency compared with a 25 Hz (one-half vertical frequency) signal from the same s... | 03/11/1986 |
