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| Number | Title | Issue Date |
| 7355936 | Disc recording medium, disc drive apparatus, and reproduction method First data representing user data and third data use the same error correction codes. The first data has a first error correction block structure and the third data has a second error correction block structure. That is to say, the first data and the third data have... | 04/08/2008 |
| 7236206 | Interpolation method for a video signal, and display device with function of interpolation for a video signal A video signal interpolation can adapt an image of input video signal to voluntary aspect ratios widely. The invention also allows a display device to uniformly line-sequential scan and uses at least two line-memories (LM1, LM2) which are applied with ... | 06/26/2007 |
| 7212724 | Jitter correcting apparatus and method for video signals A jitter correcting apparatus and method for a video signal in a video signal reproduction system includes a digital video decoder for demodulating an externally-applied video signal and a phase-locked loop for generating a first clock signal synchronized with the v... | 05/01/2007 |
| 7193598 | Noise suppressing method for switching on/off flat panel display A noise suppressing method for switching on/off a flat panel display. A signal detect circuit and a video signal processor are embedded in a time controller IC. At the switch-on transient, the signal detect circuit functions to detect whether the signal is stable. W... | 03/20/2007 |
| 7065190 | Method of encoding and decoding computer video signals for transmission over a twisted pair cable A method of encoding and decoding computer video signals for transmission over a twisted pair cable is disclosed. Vertical and horizontal sync components of a video signal are converted into narrow vertical and horizontal sync components having the pulse width of 20... | 06/20/2006 |
| 7053959 | Digital video encoder A mask circuit masks a digital video signal so that a video signal of an analog video signal is not outputted for a predetermined period after the start of output of a horizontal synchronizing signal of the analog video signal. A period of masking the digital video ... | 05/30/2006 |
| 6987817 | Digital clock recovery PLL An apparatus comprising an analog circuit and a digital circuit. The analog circuit may be configured to generate a plurality of samples of an input signal in response to a plurality of phases of a reference clock. The digital circuit may be configured to (i) measur... | 01/17/2006 |
| 6977975 | Digital clock recovery PPL An apparatus comprising an analog circuit, a first digital circuit, and a second digital circuit. The analog circuit may be configured to generate a plurality of samples of an input signal in response to a plurality of phases of a reference clock. The first digital ... | 12/20/2005 |
| 6973258 | Method and apparatus for recording digital data streams A method and apparatus for recording digital data streams. When a digital broadcast data stream received by a set top box is transmitted through a communication interface such as an IEEE-1394 bus to a streamer, program clock references contained in the data stream b... | 12/06/2005 |
| 6920280 | Digital data play back apparatus and method for playing back digital data The present invention relates to a digital data play back apparatus for converting a digital data a signal read from a recording medium by sampling in a clock cycle, equalizing this digital data to a waveform which agrees with a partial response class on the basis o... | 07/19/2005 |
| 6909472 | Conversion of a video signal for driving a liquid crystal display Method and apparatus for the conversion or generation of a video signal intended to be displayed on an image display with different luminance response times for rise and fall. The conversion or generation of the video signal is so that motion artefacts which are cau... | 06/21/2005 |
| 6895174 | Frame number detecting device An object is to provide a frame number detecting device having a frame counter which is less apt to output a wrong frame number even if a sync signal type was erroneously detected from a DVD etc. and the combination of variation of the sync signal types corresponds ... | 05/17/2005 |
| 6895167 | Information reproducing system and information reproducing method An information reproducing system having a track format in which information for an n-times speed reproduction are arranged in advance at predetermined positions on a recording track of a recording medium, including control signal reproducer for reproducing a contro... | 05/17/2005 |
| 6829671 | Method and system for improved audio data retrieval from an optical media The present invention provides a method and system for audio data retrieval from an optical media. The method includes reading a sector of audio data from the optical media, the sector comprising a sector data and a sector sub-code; collecting the sector sub-code; c... | 12/07/2004 |
| 6714717 | Time base corrector A time base corrector apparatus for removing time base errors from video signals. A voltage-controlled oscillator (VCXO) is locked to the chroma burst of the input signal. The VCXO is used to digitize the input video, to comb filter and to demodulate chroma signals.... | 03/30/2004 |
| 6453109 | Video-signal processing apparatus providing a first clock signal and second clock signal which is based on the phase of the input signal A signal processing apparatus includes a first clock generation circuit for generating a first clock signal having a constant frequency, a detection circuit for detecting a phase change in an input video signal, a second clock generation circuit for gener... | 09/17/2002 |
| 6408127 | Image processing apparatus An image processing apparatus, for an image recording and reproducing system, comprises a means for writing a given field image signal in a field memory, and a means for reading out the field image signal written in the field memory. The reading means rea... | 06/18/2002 |
| 6078720 | Apparatus for copying a signal recorded on a video recording medium without demodulation An apparatus for picking up a video signal recorded on a recording medium and copying a frequency modulated signal without demodulation. In the apparatus, a high-pass filter separates a high-frequency modulated luminance signal from the modulated video si... | 06/20/2000 |
| 6046776 | Burst gate pulse generator A burst gate pulse generator generates a burst gate signal representative of a time period during which a burst signal is present within an input composite video signal. Each period of the input composite video signal includes a horizontal synchronization... | 04/04/2000 |
| 5959692 | Television-signal processing apparatus and television-signal processing The present invention relates in general to a digital-signal processing apparatus as well as a digital-signal processing method and, in particular, to a jitters removing apparatus as well as a jitters removing method. In the apparatus provided by the pres... | 09/28/1999 |
| 5926602 | Time-base corrector circuit capable of adding color burst signal to output signal based on kind of input video signal A memory controller which controls writing/reading operation to/from a memory in a TBC circuit prohibits writing operation to the memory circuit in response to an activation of a frame grab signal after an A/D converted video signal for one frame is store... | 07/20/1999 |
| 5923707 | Reproducing apparatus capable of generating clock signal synchronized in phase with reproduced data In an information signal recording and reproducing apparatus, reproduced data is equalized by an equalizer and a clock signal synchronized in phase with the reproduced data is generated. An equalizing characteristic of the equalizer is controlled accordin... | 07/13/1999 |
| 5923377 | Jitter reducing circuit A sync signal correction circuit generates a corrected sync signal which is obtained by correcting a timing of a sync signal on the basis of a time axis variation component (jitter component) of the sync signal separated from a picture signal. The correct... | 07/13/1999 |
| 5844621 | Burst gate pulse generator A burst gate pulse generator generates a burst gate signal representative of a time period during which a burst signal is present within an input composite video signal. Each period of the input composite video signal includes a horizontal synchronization... | 12/01/1998 |
| 5745314 | Clock generating circuit by using the phase difference between a burst signal and the oscillation signal A circuit for generating a clock of a predetermined frequency in folllowing-up relation to an input video signal, comprising a PLL circuit including a phase comparison circuit for comparing the phase of a synchronizing signal of the video signal with the ... | 04/28/1998 |
| 5724471 | Automatic phase control method and apparatus employing a region determiner An automatic phase control method and automatic phase controller suitable for the method are disclosed, which can effectively cope with a phase error which is outside a proper operation region of a phase comparator, in which the phase comparator detects a... | 03/03/1998 |
| 5661526 | Broadcast signal receiver and tape recorder and, method of detecting additional information channel The video cassette recorder selects channels in succession, determines the presence or absence of additional information included in the broadcast signal for the selected channel, and stores the selected channel regarded as a reception channel for the add... | 08/26/1997 |
| 5606426 | Digital time base corrector for reproducing video signals A digital time base corrector in which a memory for correction of a time base is commonly used as a memory for correction of a drop-out and a signal process to a video signal which is replaced by a drop-out compensation is made unnecessary. The corrector ... | 02/25/1997 |
| 5598274 | Image signal recording and reproducing system An image signal recording and reproducing system is arranged to record an image signal on a recording medium and to reproduce a recorded image signal from the recording medium. The system adds a pilot signal having a single frequency to at least one of th... | 01/28/1997 |
| 5598273 | Recording control device and method utilizing a test signal having multiple frequencies In a magnetic recording control device, a plurality of test signals of different frequencies are recorded on and reproduced from a magnetic recording medium, and the reproduction levels of the test signals are detected. From the detection results, the fre... | 01/28/1997 |
| 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 |
| 5515108 | Digital automatic frequency control method and circuit therefor A digital automatic frequency controlling method and circuit therefor in which a digital horizontal sync signal is separated from an input horizontal sync signal in response to a system clock, a horizontal sync separation point value is extracted, an actu... | 05/07/1996 |
| 5510898 | Information signal recording apparatus Apparatus for processing signals having time base variations comprises: time base variation correction circuitry for correcting time-base variations existing in a signal input thereto and having an input terminal and an output terminal, the output termina... | 04/23/1996 |
| 5486929 | Time division multiplexed video recording and playback system A system and method for recording video signals onto analog magnetic tape, and for the playback of those recorded signals. Such a system includes a digital luminance signal generator, a first digital chrominance signal, and a second digital chrominance si... | 01/23/1996 |
| 5475439 | Image processing apparatus with chrominance processing and luminance delay An image processing apparatus for performing digital signal processing on an input color video signal is provided with a delay circuit for cancelling a time difference which occurs between a luminance signal component and a chrominance signal component of... | 12/12/1995 |
| 5416599 | Magnetic video signal reproducing apparatus with correction of phase rotation An apparatus for reproducing video signals from a magnetic recording medium using first and second magnetic heads mutually having different azimuth angles. Here, the video signal is obtained by frequency-multiplexing of a low frequency-converted chrominan... | 05/16/1995 |
| 5396294 | Digital chrominance signal demodulation apparatus Different from typical signal processing which employs a feedback control, by adopting a demodulating circuit employing AFC, which is not affected by a comb filter, the response characteristic against jitter is improved and a down converted chrominance si... | 03/07/1995 |
| 5381238 | Helical scan type playback apparatus for video data recorded on magnetic tape A helical scan type playback apparatus comprising a plurality of magnetic heads, a position signal generation element for generating a signal indicative of each position of these magnetic heads, and a switching element for video signals played back by the... | 01/10/1995 |
| 5359426 | Reproducing a bandwidth expanded chroma signal with reduced noise and reduced flicker A chroma signal is emphasized then sub-sampled using a sampling offset differing by 90° in four consecutive fields, then recorded on a recording medium. After reproduction from the recording medium, the phase of the reproduced chroma signal is corrected,... | 10/25/1994 |
| 5303061 | Apparatus for rejecting time base error of video signal A time base correcting apparatus for reducing hindrance to a carrier chrominance signal due to clock jitter, when a sampling clock is generated by a digital circuit. In the time base correcting apparatus, a video signal is sampled with a clock synchronize... | 04/12/1994 |
