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| Number | Title | Issue Date |
| 6260085 | Changeover device which uses both analog and digital signals as input signals and supplies an analog output signal The invention relates to a changeover device which uses both analog and digital signals as input signals and supplies an analog output signal. The changeover device contains a digital-to-analog converter whose output level is adjustable. Matching to the l... | 07/10/2001 |
| 5946354 | Hard disk drive read channel with half speed timing A hard disk drive read circuit for d=1 run length limited (RLL) encoded data which processes multiple consecutive data samples in parallel. The circuit of the present invention receives an analog signal from the read head of the hard disk drive. The circu... | 08/31/1999 |
| 5841597 | Divided master tape production device, dubbing device and dubbing system which is equipped with these devices A high-speed dubbing system which is not a complicated system adjusts phase shifts to return a plurality of multiple divided master tape audio signals to a time series signal array which is the same as that of the original master tape signal. The dubbing ... | 11/24/1998 |
| 5721647 | Multitrack recording arrangement in which tape frames formed of laterally adjacent track frames are distributed among recording channels In a multitrack recording arrangement in which information may be recorded in or reproduced from a plurality of adjacent tracks simultaneously and in which the plurality of adjacent tracks are longitudinally partitioned into segments referred to as tape f... | 02/24/1998 |
| 5636311 | Tape dubbing and divided master tape producing system A high speed dubbing apparatus for producing magnetic tapes such as video, audio or computer soft tapes, is provided. Typical form of the apparatus may comprise 3 master tape playback devices for synchronously playing back 3 divided master tapes respectiv... | 06/03/1997 |
| 5497244 | Method for storage and retrieval of video from disks A television storage system for editing and special effects equipment in which live video input material is recorded and converted into two parallel streams of real time live video with the input video recorded as compressed segments independently accessi... | 03/05/1996 |
| 5483394 | Filtered average servo demodulator A track following positioning system including filtered average servo demodulators for maintaining the position of a magnetic tape head in alignment with tracks of data stored in magnetic medium. A servo head tracks a centerline in a servo written region ... | 01/09/1996 |
| 5481411 | Tape dubbing and divided master tape producing system A high speed dubbing apparatus for producing magnetic tapes such as video, audio or computer soft tapes, is provided. Typical form of the apparatus may comprise 2 master tape playback devices for synchronously playing back 2 divided master tapes respectiv... | 01/02/1996 |
| 5481752 | Method of editing multimedia data including graphic display of reproduction times A data editing apparatus includes a mass storage device to edit multimedia data such as picture, audio, text and other data. By the visual graphic display of the time positions of the edited information, the user can easily grasp the reproduction time of ... | 01/02/1996 |
| 5479391 | Disk apparatus A disk apparatus composed of a disk recording system includes a disk recording medium divided into a plurality of regions in a track direction; a data compressor for compressing the data in terms of time, a recording data delaying apparatus for rearrangin... | 12/26/1995 |
| 5386581 | Multimedia data editing apparatus including visual graphic display of time information A data editing apparatus includes a mass storage device to edit multimedia data such as picture, audio, text and other data. By the visual graphic display of the time positions of the edited information, the user can easily grasp the reproduction time of ... | 01/31/1995 |
| 5162920 | Information signal recording with time base correction facility apparatus An information signal recording apparatus of this invention records on a recording medium a signal which includes a first information signal and a second information signal which differs from the first information signal. It multiplexes the second informa... | 11/10/1992 |
| 5136391 | Digital video tape recorder capable of accurate image reproduction during high speed tape motion In a digital VTR, supplied digital video information is separated into 0th to second stage data by an information separating circuit (300) employing a hierarchical coding method. The 0th stage data are subjected to processes such as error correction as ma... | 08/04/1992 |
| 5132807 | Recording apparatus for recording main information with additional information An apparatus for recording main information signals in tracks formed on a recording medium, wherein the track is not only made up from the recording area for the main information signals, but also provided with a recording area for additional information ... | 07/21/1992 |
| 5027222 | Apparatus for recording audio signals and video signals on a recording medium In an audio and video recording apparatus, a video signal is separated into a luminance signal and a chrominance signal. The luminance signal is separated into low frequency and high frequency components. The high frequency component signal is subjected t... | 06/25/1991 |
| 4916548 | Video tape recorder for recording/reproducing two-channel component color video signals A video tape recorder has a pair of rotary magnetic heads spaced apart by 180° from each other on a rotary cylinder which rotates one turn (360°) during each field of a video signal to be recorded. A recording circuit has first and second memories for r... | 04/10/1990 |
| 4897739 | Multi-channel recording apparatus using a plurality of heads in turn A multi-channel recording apparatus in which n rotary heads (n is 3 or higher integer) are arranged on the outer peripheral edge of a drum in evenly spaced relation, and a tape-shaped recording medium is trained round the drum over an angular range of at ... | 01/30/1990 |
| 4862292 | Digital information signal recording apparatus A digital information signal recording apparatus has a first mode in which a digital information signal of one channel is recorded on a recording medium at a given bit rate and a second mode in which digital information signals of n channels (n: an intege... | 08/29/1989 |
| 4837641 | Rotary head type digital signal recording and reproducing apparatus A rotary head type digital signal recording and reproducing apparatus plays a magnetic tape which is pre-recorded with a time division multiplexed audio signal comprising a PCM audio data and a sub-channel signal which is time division multiplexed immedia... | 06/06/1989 |
| 4812920 | Wide band video signal recording apparatus A wide band video signal recording apparatus is arranged to simultaneously record, on a recording medium, multi-channel video signals which are obtained by frequency modulating a luminance signal included in a wide band video signal; by frequency dividing... | 03/14/1989 |
| 4794464 | Video time division multiplexer with plural dual port memories A video signal is time division multiplexed prior to recording using a time base compression device including a random access memory, instead of serial shift registers or the like. Large time base errors in the incoming video signal are accommodated witho... | 12/27/1988 |
| 4785359 | Dual purpose memory for time division multiplexing and time base error correction In a time division multiplex video reproducing apparatus, a dual purpose memory serves to (a) perform time compression for time division multiplexing and (b) perform as a variable delay line for time base error correction. Seemingly unavoidable conflicts ... | 11/15/1988 |
| 4774597 | Quadrature head dual channel VCR Two pairs of opposing magnetic heads mounted in quadrature on a rotary drum simultaneously receive two independent video channels, one channel being quadrature-delayed with respect to the other. The heads simultaneously record the two video channels in ad... | 09/27/1988 |
| 4739419 | Apparatus for eliminating midfield skew error by delaying the lower half field of a T M format video signal to be recorded on the second of two tracks A video tape reproduction apparatus is operable in a conventional mode in which a field of video information is recorded in a single track on magnetic tape, and in a high quality mode in which a field of video information is recorded in two adjacent track... | 04/19/1988 |
| 4661863 | Color video signal recording and reproducing apparatus A color video signal recording and reproducing apparatus comprises a first circuit for generating a low-frequency luminance signal, a second circuit for forming a time base compressed line-sequential color difference signal, a circuit for generating a tim... | 04/28/1987 |
| 4641201 | Color video signal transmitting apparatus A color video signal transmitting apparatus comprises first and second input terminals supplied in parallel with a time base compressed luminance signal and a first time base compressed line-sequential color difference signal which are obtained from one o... | 02/03/1987 |
| 4636877 | Apparatus for reproducing multiple track digital signals and including timing control of read/write operations An apparatus for reproducing digital signals on a multi-track recording medium, wherein a signal to be written in a memory is selected from among signals of each track demodulator a demodulation means (50) by a writing track selection circuit (200), the s... | 01/13/1987 |
| 4597019 | Clock pulse generating circuit in a color video signal reproducing apparatus A clock pulse generating circuit in a color video signal reproducing apparatus comprises a first PLL supplied with a horizontal synchronizing signal within a time-division-multiplexed signal reproduced from a recording medium and having a response charact... | 06/24/1986 |
| 4517609 | Video signal recording apparatus A video signal recording apparatus comprises a guiding mechanism for guiding a magnetic tape, and a main head and a sub-head for scanning and recording a composite video signal throughout a predetermined range of the magnetic tape. The main head and the s... | 05/14/1985 |
| 4329718 | Video tape recording and reproducing apparatus with line base correction A video-tape recording and reproducing apparatus comprises: a transformer system to divide the field signal into multi-channel transformer signals; a system to record and reproduce these multi-channel transformer signals using a multiple magnetic head; a ... | 05/11/1982 |
| 4303950 | Helical scan video tape recorder for recording video and audio signals on contiguous tracks In a magnetic recording and reproducing system of the type wherein a plurality of rotating magnetic heads record the video signal on a magnetic tape as tracks which are inclined at an angle relative to the direction of travel of the magnetic tape, the aud... | 12/01/1981 |
| 4287458 | Digital servo control circuit In a digital servo control system, the duty cycle of a pulse width modulated signal for controlling a drive motor is determined by digital numbers representing phase and/or speed errors preset into a memory and circulating counter. The circulating counter... | 09/01/1981 |
| 4222078 | Method and apparatus for recording of wide band signals, particularly video signals To provide for narrow band storage of wide band signals, a dynamic memory e.g. a tape has a plurality of storage tracks, and storage arrangements which are present as one more than the number of storage tracks. Each storage arrangement includes a storage ... | 09/09/1980 |
| 4198662 | Method of recording and playing back video signals on magnetic tape In order to record and play back video signals on magnetic tape, the magnetic tape is fed past a magnetic head and reversed periodically. A stationary multi-track magnetic head is used, and a magnetic tape moves relatively thereto. The head gaps of the mu... | 04/15/1980 |
| 4064538 | Method and device for displaying a picture film via a video-disc A method and apparatus for displaying a picture film via a video-disc which consists in analyzing the pictures of the film on a plurality of interlaced fields which are successively recorded onto a video-disc. These fields are then read simultaneously on ... | 12/20/1977 |
| 4022986 | Playback unit for a long-playing record of a time division multiplexed audio signal A system comprising a playback unit and an associated long-playing record on which sound information is recorded in a time division multiplex code on several tracks. Upon reproduction the same track is scanned n times with the aid of a beam of light befor... | 05/10/1977 |
| 3975764 | Television signal recording and reproducing system A television signal recording and reproducing system wherein a television signal to be recorded is sequentially sampled at a predetermined number of points during each horizontal scanning period thereby to convert the television signal occupying a wide ba... | 08/17/1976 |
| 3935591 | Audio-visual apparatus with control signal operated gating means Adaptor for reliably switching between audio and video information signals obtained from an external audio input device (e.g., the tape of a standard audio cassette recorder or player) with only the video information signals being applied to standard tele... | 01/27/1976 |
