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Match Document Document Title
7058283 Magnetic tape tracking control apparatus and method, magnetic tape format, recording medium and program  
Magnetic tape tracking control apparatus and method, magnetic tape format, recording medium and program for controlling tracking of tracks on a magnetic tape by a rotary head are disclosed. The...
6823128 Signal processing apparatus  
A signal processing apparatus including a write controller. This write controller specifies a start position of an effective time period of each field, based on an ID signal superimposed over lines...
6650825 Magnetic recording and reproducing apparatus and method of adjusting the head-switching point therein  
In a magnetic recording and reproducing apparatus with at least two video heads mounted on a rotating drum, a reference video signal is reproduced, using a stored initial value to control the...
6539165 Reproduction of a digital information signal in a trick play reproduction mode  
A tracking control system is proposed for realizing a tracking control in a trick play reproduction mode in a helical scan reproduction apparatus. The tracking is based on the derivation of a...
6389219 Method and device for controlling the phase relation between a head drum and tape feed system of a magnetic tape recording device  
A method for controlling a phase relation between a head drum and a tape feed system, of a type wherein digital picture data is subdivided into blocks having an assigned pointer value each and...
6363206 Method for controlling tracking position during low-speed reproducing in a video cassette recorder  
A method for controlling tracking position during low-speed reproducing in a video cassette recorder (VCR) which provides noise suppression noise and increased image quality. In one aspect, in a...
6292622 Method of low-speed reproducing in a video cassette recorder  
A method for low-speed reproducing in a video cassette recorder (VCR) having a pair of main heads for normal-speed reproducing and at least a pair of additional heads neighboring said main heads is...
6285820 Video tape recorder  
In a video tape recorder for recording a video signal having a first field frequency and a video signal a second field frequency, substantial centers 11a of lengths of recording tracks, on a...
6272282 Recording/reproducing apparatus having means for reproducing signals from a recording block recorded immediately before  
A recording and reproducing apparatus includes a memory unit for memorizing information to identify a recording block that was recorded immediately before, and a control unit for referring to the...
6240238 Magnetic disk device  
A magnetic disk device that has a sufficient tracking control capability and a sufficient capability, and has the rotational speed of a magnetic disk reduced to record moving-image information. A...
6204986 Drum motor controller using microcomputer for intermittent slow VTR  
For intermittent slow activation, jitter is caused for reproduced image due to increase in the relative speed of a magnetic tape and a magnetic head. To solve this problem, a rotating speed of a...
6195500 Phase control apparatus for video cassette recorder  
A phase control apparatus for a video cassette recorder comprising a control head for reproducing a control signal recorded on a control track of a tape, a control signal amplification circuit for...
6151440 Arrangement for segment-by-segment recording of information signals on an intermittently drivable magnetic tape  
In an arrangement (1) for the segment-by-segment recording of information signals by at least one rotationally drivable magnetic head (4, 5) in inclined recording tracks (2) on a magnetic tape (3)...
RE36933 Disk reproduction apparatus capable of continuously varying a reproduction speed  
A pickup reads data recorded on a disk and outputs a current signal corresponding to the read data. An amplifier outputs the current signal as a voltage signal. A data slice circuit binarizes the...
6055356 Tracking control method and apparatus for video recorder/player  
A tracking control method and apparatus is provided for producing an optimum picture without noise during a slow reproducing mode of a video recorder/player, such as still mode. According tot the...
5930448 Tracking control circuit and method in digital image recording and reproducing device using bit error rate  
A tracking control circuit is disclosed for use in a digital image recording and reproducing device which has a mechanism (22) for controlling the movement of a magnetic medium according to a servo...
5920676 Apparatus and method for removing noise bar  
A reproduction control apparatus and method in a video cassette recorder (VCR) reduces for reducing noise generated during a high-speed search of a picture in the VCR . In the reproduction control...
5912780 Magnetic recording and reproducing apparatus  
A magnetic recording and reproducing apparatus has a rotary magnetic head mechanism having at least a first rotary magnetic head with a magnetic gap set to a azimuth angle less than 90 degrees in a...
5887113 Apparatus and method for controlling tracking in slow mode playback  
An apparatus and a method of controlling tracking in slow mode playback. The tracking control apparatus comprises a video head for detecting a video signal recorded on a magnetic tape, a video...
5864648 Magnetic recording/reproducing apparatus  
Magnetic recording/reproducing apparatus is constructed in such that a personal computer is electrically connected to the apparatus through connectors, and that a track deviation caused by the...
5822491 Track deviation measuring method and track deviation measuring apparatus  
Track deviation of a recorded track on a magnetic tape is measured in a non-destructive manner according to a measuring method and an apparatus employing the same. A magnetic tape recorded with an...
5809205 Automatic tracking apparatus and method for a hifi video cassette recorder  
An automatic tracking apparatus and method are disclosed in which high quality sound and picture can be recorded and reproduced for user. In the present invention, videocassette position values are...
5802243 Time expansion method and system for slower than real-time playback with video cassette recorders  
A video cassette recorder includes a tape transport and servo that records digital data at one tape speed and plays back the digital data at one twentieth of the recording speed, both with a fixed...
5771132 Tracking error data detecting apparatus and VTR having the same apparatus  
A video tape recorder has a drum for winding a magnetic tape therearound, a capstan motor and a drum motor linked with the drum, both motors for traveling the magnetic tape, and two rotary magnetic...
5739968 Recording/playback apparatus for dividing encoded digital video data into essential information and high-precision information and for recording both the high-precision information onto a magnetic tape  
In a magnetic recording/playback apparatus for recording and playing back a digital video signal on a helical track of a magnetic tape using two or more rotary heads, the playback image at the time...
5684916 Apparatus and method for automatic tracking during abnormal playback of a video tape  
A video tape playback device in which heads are tracking-controlled according to a predetermined tracking control value, in order to accomplish automatic tracking so that noise is not regenerated...
5499144 Magnetic recording/playback apparatus which shifts the head scan by a 1/2 t r  
In a magnetic recording/playback apparatus for recording and playing back a digital video signal on a helical track of a magnetic tape using two or more rotary heads, the playback image at the time...
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...
5459622 Device for controlling the rotation of the head drum  
A rotation control device including a rotary head drum drive circuit for driving rotation of a rotary head drum, a tape transport mechanism for transporting a tape in a predetermined direction...
5414568 Variable speed digital signal reproducing apparatus  
A variable speed digital signal reproducing apparatus, particularly related to low speed reproduction of a digital signals recorded in a recording medium. The apparatus includes a unit for...
5359462 Device for eliminating noises during slow and high speed search operation in a video tape recorder and method therefor  
A device for reproducing a picture without noises in slow and/or high speed search modes of operation and a method therefor. The device records an address indicative of tape position on a control...
5327296 Duplicating system for video and audio signals using timebase compression and high speed recorders  
A video signal is duplicated in a reduced time by using n video tape recording devices having rotary heads reproducing the video signal from respective recording media at a normal rotary head...
5319500 Video reproducing apparatus for maintaining picture quality during high speed search functions  
A video reproducing apparatus which controls a revolution speed of the rotary drum to have a variable speed according to the tape transport speed during a special playback, and maintains the...
5270891 Vertically distant magnetic head units with piezoelectric error tracking  
In a helical-scan magnetic-tape apparatus having a scanning unit (102) comprising two diametrically opposed rotatable magnetic-head units (113, 114) which are movable over an actuating distance (A)...
5247401 Replay equalization circuit in digital image recorder  
A replay equalization circuit for reproducing digital image information recorded on a recording medium includes a transducer for reading the digital image information, an equalization circuit...
5103355 System for correlating head scan tracking and tape timer transitions  
A scan tracking centering algorithm is not left at a nominal value, but is modified based on a tape timer's position into the field. That is, the scan tracking centering is adjusted forward (i.e.,...
5047872 Fast and slow playback method and apparatus for data recorded on magnetic tape  
The rotary headwheel device for scanning oblique tracks on an advancing magnetic tape is provided with normal playback heads which follow the recording heads and trace the path of the same oblique...
4991031 Rotating head type reproducing apparatus  
A rotating head type reproducing apparatus arranged to reproduce a recorded signal by tracing, one after another, with rotating heads many recording tracks formed on a record bearing medium at a...
4941061 Noise-free skip search apparatus utilizing a piezo-electric element  
A noise-free skip search apparatus utilizing a piezo-electric element wherein no noise appears on the screen at the high reproducing speed of a VCR. In the apparatus, a piezo-electric element is...
4916555 Method and apparatus for producing time base altered effects in data recording and reproducing apparatus  
A method and apparatus for producing special motion effects such as slow or fast motion, still frame and other effects from video magnetic tape is disclosed which is particularly applicable to...
4912571 A memory controlling apparatus for a magnetic recording and reproducing apparatus  
A memory controlling apparatus for a magnetic recording and reproducing apparatus which records and reproduces a field image signal in each read or write cycle performed by a video head for...
4912577 Tracking apparatus for VCR  
A tracking apparatus for a VCR comprises an operational amplifier comparator for comparing a reference voltage with an integrated drum rotation pulse signal. First and second switches are provided...
4907099 Method and apparatus for reproducing an information signal recorded on a rotary recording medium at a high speed  
A method and apparatus for reproducing an information signal recorded on a disc at a high reproducing speed by moving a reproducing light beam for reproducing the information signal across a track...
4905108 Rotary head type reproducing apparatus with tracking control function  
A rotary head type reproducing apparatus wherein, three rotary heads are arranged to be capable of simultaneously tracing different parts of many parallel tracks formed on a record bearing medium,...
4896229 Apparatus for reproducing video signals at a speed which deviates from a nominal speed  
A video recorder which is adapted to reproduce video signals recorded on a record carrier in the form of a tape in tracks which are parallel to each other and which are inclined relative to the...
4816930 Tracking control for a tape using pilot signals  
A circuit for reproducing informaiton signals and four different tracking control pilot signals recorded on respective tracks on a magnetic tape and producing from the pilot signals a tracking...
4816927 Magnetic-tape apparatus, having means for optimizing tape speed  
Rotatable head support (6) carries at least one magnetic head (7) which scans the tracks of a magnetic tape (1) guided across an arcuate guide surface (5) over an angle smaller than 180°. The...
4800447 Slow-playback for helical scanning type VCR-VTR  
In a special playback apparatus for a VTR, an address clear signal for setting a write start timing of the video data is derived from a reference signal of a servo circuit in a video tape recorder....
4796123 Slow reproducing apparatus for VTR or VCR using image memory  
In a slow reproducing apparatus, a magnetic tape is intermittently driven. In a tape stop state during the intermittent drive operation, a video signal for one field is written in a field memory,...
4780774 Rotary head type reproducing apparatus having a head shifter for accurately shifting the rotary head  
A rotary type reproducing apparatus for reproducing a recorded signal through the tracing of many recording tracks formed at a predetermined pitch on a record bearing medium, one after another,...
Matches 1 - 50 out of 106 1 2 3 >