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| Number | Title | Issue Date |
| 7542653 | Passive fiber organizer for mesh network node interconnections A mesh optical network node has switch cards which carry active components, such as wavelength routers to switch the paths of optical signals through the node and a fiber organizer handles the numerous optical fiber interconnections among the switch cards. The fiber... | 06/02/2009 |
| 7391472 | System and method for adaptive color burst phase correction We describe and claim an adaptive color burst phase correction system and method. The adaptive color burst phase correction system includes a signal detector to extract a color burst from a video signal, the color burst including a phase and an amplitude, an adaptiv... | 06/24/2008 |
| 7379653 | Audio-video synchronization for digital systems The audio-video synchronization process ensures continuity of displayed AV data. To initialize the process, a transport processor determines whether an occupancy criterion of a buffer storing received audio and video frames has been met. If the criterion is met, the... | 05/27/2008 |
| 7310092 | Electronic apparatus, electronic system, and driving method for electronic apparatus An electronic apparatus includes unit circuits provided with electronic devices, data lines connected to the unit circuits, a first output device to output, as a first output, a current or a voltage corresponding to an externally supplied data signal, a second outpu... | 12/18/2007 |
| 7184507 | Residual phase error correction A phase error correction technique in data communication receivers such as WLAN (Wireless Local Area Network) receivers is provided. A signal having a phase error is received, and a phase error correction mechanism having a loop structure is operated on the input si... | 02/27/2007 |
| 6925244 | Apparatus for recording/reproducing high resolution video signal A video signal recording/reproducing apparatus for recording/reproducing a high resolution video signal wherein the video resolution is enhanced by shifting a carrier frequency to a higher band in frequency modulation in a VCR's video signal recording mode, and by d... | 08/02/2005 |
| 6449421 | Video signal processor having a reduced number of oscillation units A video signal processor which includes a reference signal generating circuit provided with at least an oscillation circuit for generating a reference signal corresponding to a burst signal and a Y/C separation circuit for separating a video signal into a... | 09/10/2002 |
| 6347179 | Video signal processor A video signal processor which includes a reference signal generating circuit provided with at least an oscillation circuit for generating a reference signal corresponding to a burst signal and a Y/C separation circuit for separating a video signal into a... | 02/12/2002 |
| 6330391 | VTR signal processing circuit In a VTR signal processing circuit, a first reproduced color under signal and a second reproduced color under signal obtained by delaying by one or two horizontal period in synchronism with a predetermined clock signal are supplied to the first and second... | 12/11/2001 |
| 5987209 | Video signal receiver in which a reference signal is shared by a PLL circuit which sets the output frequency of a local RF-IF oscillator and by the chrominance signal generator A video signal processor which includes a reference signal generating circuit provided with at least an oscillation circuit for generating a reference signal corresponding to a burst signal and a Y/C separation circuit for separating a video signal into a... | 11/16/1999 |
| 5636312 | Video image mixing apparatus A video image mixing apparatus which can prevent a fluctuation of a mixed video image by a mixed video signal in the case where a playback video signal obtained by playing a recording medium in a special playing mode and a graphics video signal. When a di... | 06/03/1997 |
| 5621537 | Color signal processing circuit in color VTR In a home VTR, a color signal processing circuit is capable of reproducing a color signal recorded as a lower converted color signal and preventing color unevenness which necessarily creates during visualizing. To avoid an adverse effect due to phase fluc... | 04/15/1997 |
| 5608531 | Video signal recording apparatus A video signal recording apparatus in which a chroma signal contained in a video signal is down-converted and then recorded on a predetermined recording medium comprises a sampling circuit for processing the chroma signal in an offset sub-sampling fashion... | 03/04/1997 |
| 5596417 | Color signal processor for inverting R-Y axis of chrominance signal A color signal processor in which a color subcarrier is multiplied with either a signal harmonic or a phase shifted harmonic of a low frequency chrominance signal, depending on whether the R-Y axis of the chrominance signal is inverted. Band pass filterin... | 01/21/1997 |
| 5568276 | Image signal recording and reproducing system In an image signal recording and reproducing system, a phase reference signal, the phase of which is synchronized with the phase of an image signal, is added to the image signal in a recording mode so as to be recorded on a recording medium, while the pha... | 10/22/1996 |
| 5323242 | Carrier signal generating circuit in video signal recording/reproducing apparatus In a video signal apparatus, a carrier signal generating circuit includes a VCO for generating a signal having a frequency at least twice that of a carrier signal necessary for conversion to a lower band with a sub-carrier in an NTSC system, a one-half di... | 06/21/1994 |
| 5247350 | Method and apparatus for testing video The chroma circuits of a VCR are tested by replacing the video signal from the video heads of the VCR with a composite signal from a test pattern signal developed by a test instrument, which composite signal includes a chroma signal which is phase rotated... | 09/21/1993 |
| 5206726 | Time base corrector for eliminating time base fluctuations in a composite video signal A time base corrector of composite video signal using memory. In the back porch and front porch of a composite video signal, offset voltages having polarities opposite to each other and a level corresponding to the level of a phase error signal are added ... | 04/27/1993 |
| 5194961 | Apparatus for locking a reproduced color video signal to a reference color frame signal A color video signal reproducing apparatus for reproducing a color video signal and a control signal for indicating a color frame of the color video signal from a record medium includes a generator for generating a reference color frame, a generator for g... | 03/16/1993 |
| 5164838 | Time base error signal generating apparatus A time base error signal generating apparatus which outputs a phase difference signal representing a phase difference between a horizontal sync signal and a reference signal as a time base error signal. In accordance with the phase status of a vertical sy... | 11/17/1992 |
| 5081537 | Color image information inserting circuit for video signal recording and reproducing system A circuit for inserting color information into a video signal during either recording or reproduction. The circuit extracts a burst signal from a chroma signal input and generates a first color carrier phase-locked with the burst signal. The chroma signal... | 01/14/1992 |
| 5043966 | Device for deriving a sampling rate The device includes a synchronizing-signal separator (20), a phase-locked loop (23), having a phase comparator (25), a voltage-controlled oscillator (28) and a frequency divider (31). The device further includes a gate circuit (26) having an input (S) cou... | 08/27/1991 |
| 4987491 | Jitter compensation circuit for processing jitter components of reproduced video signal A reproduced video signal of a VTR is applied to a jitter compensation circuit (100). The applied reproduced video signal is A/D converted by a phase modulated clock and after subjected to the adjustment of timing, the signal is written into a memory (4).... | 01/22/1991 |
| 4985781 | Recording and/or reproducing apparatus in which a reference signal is used in a recording and/or reproducing part as well as in another part A color video signal recording and/or reproducing apparatus wherein a reference signal which has a frequency related to a color subcarrier frequency of a carrier chrominance signal included in a color video signal and is used by a carrier chrominance sign... | 01/15/1991 |
| 4980779 | Information signal recording and/or reproducing apparatus for correcting time variations An information recording apparatus for correcting the synchronization portion of a luminance signal and the pedestal portion of a chrominance signal and recording the corrected luminance and chrominance signals. An information reproducing apparatus is pro... | 12/25/1990 |
| 4954911 | Reproducing apparatus having a mechanism for compensating time-base fluctuations A reproducing apparatus for reproducing a recording from a record bearing medium on which a plurality of different pilot signals having different frequencies are recorded in rotation along with an information signal, one in each of recording tracks of the... | 09/04/1990 |
| 4772950 | Method and apparatus for sampling and processing a video signal A method and apparatus for sampling and processing a video signal having a time base fluctuation with sampling clock pulses produced from an oscillator which is instantaneously phase-synchronized with synchronizing information of the video signal. The syn... | 09/20/1988 |
| 4751586 | Rotary head tape transport servo system having high speed servo lock capability A method and apparatus for controlling the capstan servo of a magnetic video tape recording and reproducing machine is disclosed. The invention provides almost instantaneous color framing and synchronous control track lock when accelerating from a very sl... | 06/14/1988 |
| 4745493 | Circuit arrangement for a color image recording and reproduction instrument or a color television receiver A circuit arrangement for a color image recording and reproduction instrument(video recorder) or a color television receiver. Such devices have a phase regulation circuit in which an oscillator (18, 59) is controlled in accordance with the phase compariso... | 05/17/1988 |
| 4729025 | Jitter correction circuit A jitter correction circuit is a circuit for suppressing a jitter contained in a reproduced digital signal. This jitter correction circuit comprises a phase-locked loop circuit comprising a phase comparing circuit (9), a second low-pass filter (10), a sec... | 03/01/1988 |
| 4725895 | Still picture reproduction system with color framing phase synchronization In a helical-scan video tape recorder, when the color framing of a reproduced video signal when a magnetic tape is stopped and of a reference video signal when an activation command signal is sent to control means for controlling a capstan motor do not co... | 02/16/1988 |
| 4684901 | Automatic phase control circuit An automatic phase control (APC) circuit with improved reliability of phase control, in which a phase of a reference signal from a crystal oscillator is alternately switched between two phases by a switch. The APC circuit includes a phase locked loop (PLL... | 08/04/1987 |
| 4677459 | Reference signal generator A reference signal generator used to compensate for a time base error of a color video signal reproduced from a video tape recorder having a memory into which the color video signals are written in response to a write clock and from which the color video ... | 06/30/1987 |
| 4608610 | Jitter compensation system in rotary recording medium reproducing apparatus A jitter compensation system in a rotary recording medium reproducing apparatus having a motor for rotating a rotary recording medium, and a reproducing transducer including a reproducing element for reproducing a recorded video signal from said rotary re... | 08/26/1986 |
| 4520402 | Video apparatus with burst locked heterodyne chroma converter and residual time base error correction A video disc player includes a phase locked loop (PLL) heterodyne converter for providing frequency translation and time base correction of the chrominance component of a composite video signal recovered when a disc is played. Residual time base errors du... | 05/28/1985 |
| 4496992 | Color video signal reproducing apparatus A color video signal reproducing apparatus comprises a carrier chrominance signal separation circuit for separating a carrier chrominance signal from a color video signal reproduced from a recording medium, a luminance signal separation circuit for separa... | 01/29/1985 |
| 4477839 | Color video signal reproducing apparatus A color video signal reproducing apparatus responds to either PAL or SECAM signals by separating a carrier chrominance signal and a luminance signal from a color video signal which is reproduced from a recording medium. The separated carrier chrominance s... | 10/16/1984 |
| 4477838 | Tangential error signal generator in PAL type video disc player A tangential error signal generator to be used in a PAL type video disc player in which a synchronous signal such as a pilot burst signal extracted from a color video signal read from a video disc of PAL type is compared with a reference periodic signal s... | 10/16/1984 |
| 4415935 | Tangential servo control signal generating device for recorded data reproducing device A tangential servo control signal generating device for a device for reproducing recorded data from a video disc for controlling the movement of a pick-up in the tangential direction of the video disc. A color burst signal is inverted in phase for every o... | 11/15/1983 |
| 4395737 | Video disc slow down processor with reverse color detector/corrector Selected fields of a redundant field slow motion video tape reproduced video signal are stored in a memory at a given clock rate and recovered from the memory at a clock rate inversely proportional to the number of times each field is repeated so as to pr... | 07/26/1983 |
