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| Number | Title | Issue Date |
| 7327933 | Variable-mode information signal reproduction apparatus with tracking control A reproduction apparatus reproduces information signals recorded in a plurality of recording modes having different information sizes of an information signal to be recorded per unit time, discriminates the recording mode of the reproduced information signal, and co... | 02/05/2008 |
| 7161887 | Method and apparatus for extracting digital data from a medium A computer-implemented method and apparatus for extracting digital data from a medium. Digital audio extraction techniques are implemented with additional features that improve the quality of the resulting audio playback files. In one embodiment of the invention, a ... | 01/09/2007 |
| 7157871 | Intermittent drive control apparatus of motor Rotation of a capstan motor is detected by a frequency detector, and supplied to a CPU as a rotation detection signal CFG. The CPU derives a period of the rotation detection signal CFG, calculates an average rotational speed of the capstan motor on the basis of the ... | 01/02/2007 |
| 6826350 | High-speed signal search method device and recording medium for the same The object of the present invention is to provide a high-speed signal search method, device, and a recording medium for the same that can obtain detection results equivalent to precisely moving a window over the entire region of the input signal even when there is n... | 11/30/2004 |
| 6621981 | Video signal recording/reproducing apparatus and reproducing apparatus A recording/reproducing apparatus or a reproducing apparatus has a first, a second and a third magnetic heads. The first and second magnetic heads have different gap azimuth angles and are spaced 180 degrees apart from each other on a rotary head. The thi... | 09/16/2003 |
| 6611652 | Video data recording/reproducing system, audio/video data recording/reproducing device, its system, and data reproducing device An AV data input/output controlling circuit is connected through a data bus to a synchronous-asynchronous conversion circuit and through a control bus to a recording and reproduction controlling circuit. The AV data input/output controlling circuit inputs... | 08/26/2003 |
| 6600871 | Digital video cassette recorder A digital video cassette recorder comprising a plurality of heads provided on a rotary member and performing the recording/playback of the data on slanted tracks in performing helical scanning for a magnetic recording medium with the above mentioned heads... | 07/29/2003 |
| 6574418 | Apparatus and method for reproduction and distribution medium To perform non-normal speed reproduction without preventing a user from understanding of the program content. The audio data which has been blocked into blocks of a predetermined time unit is stored in a buffer. Blocks having the level equal to or lower t... | 06/03/2003 |
| 6549356 | Rotary drum and magnetic tape recording/reproducing apparatus using the same There is provided a rotary drum which is capable of increasing recording density of a magnetic tape by changing tape/head relative speed and by solving problems which occur in increasing the tape/head relative speed. The inventive rotary drum includes a p... | 04/15/2003 |
| 6504991 | Magnetic recording apparatus, magnetic reproducing apparatus, and related methods First and second magnetic heads provided on a rotary drum alternately scan a magnetic tape. The first and second magnetic heads are different from each other in azimuth angle. A digital information signal is fed to the first magnetic head and is recorded ... | 01/07/2003 |
| 6275647 | Video tape recorder In order to not only obtain excellent sound quality in a long-time recording mode not less than five times a standard recording mode by preventing, without narrowing a track pitch of a high-fidelity head, the high-fidelity head from tracing the third soun... | 08/14/2001 |
| 6246830 | Apparatus for recording and reproducing video and audio signals in either analog or digital form An apparatus for recording and reproducing video and audio signals in either analog or digital form. The heads are arranged to conform with existing analog standards, such as VHS, and yet are also able to record in digital form in adjacent non-overlapping... | 06/12/2001 |
| 6078724 | Magnetic reproducing apparatus of helical scan type A magnetic reproducing apparatus of a helical scan type includes a rotary drum on which a magnetic tape is wound along a part of a helix. A first set of a main head and a sub head is mounted on the rotary drum. The main head and the sub head in the first ... | 06/20/2000 |
| 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 clockwise direction with respect to a width direction of ... | 06/15/1999 |
| 5878185 | Apparatus for recording/reproducing a video signal using a rotary head A dubbing system for duplicating a tape-shaped recording medium on which an amount of information signals for a given period of time are recorded in each of many tracks having different azimuth angles between adjacent tracks includes a reproducing apparat... | 03/02/1999 |
| 5870522 | Backward compatible HDTV recording/reproducing system A magnetic tape recording with a new signal encoding format, apparatus for recording this format and reproducing apparatus for reproducing signals from this format. A standard VHS signal is recorded as a first set of parallel slant tracks having a predete... | 02/09/1999 |
| 5835664 | Method and apparatus for recording digital video signals A method and an apparatus for reproducing digital video signals in which every one-frame data of the digital video signals are recorded on n tracks of a recording medium by an inclined azimuth recording system are varying speed reproduced by a rotary head... | 11/10/1998 |
| 5751889 | Recording and reproduction of a trick mode video signal A recording arrangement for recording trick mode information in portions of tracks includes at least two recording heads (A, B). Trick mode information recorded in the portions in the tracks enable a trick mode during reproduction in a reproducing arrange... | 05/12/1998 |
| 5712944 | Video tape recorder for intermittent recording and having rotary heads with no step therebetween In a video tape recorder capable of recording information for a long time, first and second rotary heads are angularly spaced by 180° and are arranged without a step between their respective planes of rotation. In a frame recording operation, an odd fiel... | 01/27/1998 |
| 5710858 | Method and apparatus for reproducing digital video signals A method and an apparatus for reproducing digital video signals in which every one-frame data of the digital video signals are recorded on n tracks of a recording medium by an inclined azimuth recording system are varying speed reproduced by a rotary head... | 01/20/1998 |
| 5680499 | Time-lapse video cassette recorder A time lapse video cassette recorder (VCR) includes a video head, a control head for selectively recording and reproducing a control pulse, a capstan motor moving a magnetic tape at a predetermined speed, a video signal processing circuit processing a vid... | 10/21/1997 |
| 5623573 | Backward compatible HDTV recording/reproducing system A magnetic tape recording with a new signal-encoding format, apparatus for recording this format and reproducing apparatus for reproducing signals from this format. A standard VHS signal is recorded as a first set of parallel slant tracks having a predete... | 04/22/1997 |
| 5576907 | Variable speed recording and/or reproducing apparatus including a plurality of rotary heads arranged with head gaps having particular azimuth angles In a recording/reproducing apparatus having rotary heads, heads A, C, E and G having a first azimuth, and heads B, D, F and H having a second azimuth are alternately arranged, and heads A' and E' having a second azimuth are disposed adjacent to the heads ... | 11/19/1996 |
| 5539589 | Magnetic reproduction device and method for ensuring reproduction of recorded information by a magnetic head of a same azimuth angle as used to record information A magnetic reproduction device includes a comparator for comparing the level of reproduced signals obtained by tracing the same track with magnetic heads having different azimuths, and switches for selecting and supplying any of the reproduced signals in ... | 07/23/1996 |
| 5519544 | Magnetic recording/reproducing apparatus with dual purpose heads A magnetic recording/reproducing apparatus for expanding the functions of the VTR with a limited number of heads. The apparatus includes audio heads A1 and A2 having azimuth angles of &#b1;30 degrees respectively, video heads SP1 and SP2 having azimuth an... | 05/21/1996 |
| 5499148 | Digital video tape reproducing apparatus compatible with tapes having a track width different from a rotary magnetic head width In a digital video tape recording and/or reproducing apparatus including a pair of rotary magnetic heads having a predetermined head width and gaps with mutually different azimuth angles which helically scan a magnetic tape as the tape is advanced in orde... | 03/12/1996 |
| 5434677 | Digital video signal reproducing apparatus with high-speed play mode Apparatus for reproducing digital video signals from a magnetic tape, wherein a frame of digital video signals had been recorded in 2 m tracks (m is an integer greater than 1), in which a pair of rotary heads having respectively different azimuth angles s... | 07/18/1995 |
| 5432648 | Magnetic recording and reproducing unit with selection of reproduced image signals The present invention provides a magnetic recording and reproducing unit of a helical scan type having a slow speed tape running mode in which the speed of running a magnetic tape is slower than that of a standard running mode. The magnetic recording and ... | 07/11/1995 |
| 5402279 | Tracking apparatus for helical scan video tape recorders A tracking apparatus for helical scan video tape recorders comprises four movable video heads situated on a scanning drum such that phase compensation information can be determined using the scanner rotational information, the tape speed, and tape positio... | 03/28/1995 |
| 5341248 | Magnetic recording/reproducing apparatus having head structure for selectively recording/reproducing either of two kinds of signals containing different amounts of information A magnetic recording/reproducing apparatus is provided which includes a head structure compatible with a long-time play mode in handling either of two kinds of signals containing different amounts of information, such as a current digital picture signal a... | 08/23/1994 |
| 5319499 | Variable-speed regeneration compensating apparatus for double azimuth 4-head type video tape recorder A variable-speed regeneration compensating apparatus for a double azimuth 4-head type video tape recorder comprises first and second standard speed regenerating heads, first and second low speed regenerating heads, a standard speed regeneration head switc... | 06/07/1994 |
| 5301070 | Information signal reproducing apparatus having three reproducing modes An apparatus in which an information signal recorded on a tape-like recording medium formed with a number of tracks in accordance with a first or second recording mode in which the number of recording tracks per unit time differ, is reproduced from the ta... | 04/05/1994 |
| 5208677 | Video signal reproducing apparatus A video signal reproducing apparatus plays back at a high speed a recorded signal recorded on a recording medium, eliminating noise bars in the reproduced image by replacing a noise portion, that is, a signal portion reproduced by a magnetic head having a... | 05/04/1993 |
| 5184254 | Playback apparatus for playing back video information recorded on magnetic tape and providing smooth-frame still or slow motion video There is disclosed an improvement in an apparatus of the helical scan type for playing back of information signals prerecorded on a magnetic tape along tracks inclined with respect to a running direction of a magnetic tape in a manner that tracks of commo... | 02/02/1993 |
| 5136437 | Video signal recording/reproducing device A video signal recording/reproducing apparatus with two groups of rotary heads which respectively include one main head and two auxiliary heads is set forth. The apparatus includes a head switching device for switching one of the two auxiliary heads into ... | 08/04/1992 |
| 5121264 | Method and apparatus for reproduction of magnetic tape by using rotary drum heads Two magnetic heads having different azimuth angles are mounted spaced from each other on a cylindrical rotary drum. Data is recorded on a magnetic tape using of the magnetic heads. On the magnetic tape, one track is formed by one of the magnetic heads and... | 06/09/1992 |
| 4935826 | Automatic tracking device for video cassette tape recorder An automatic tracking device which reproduces the biggest and clearest FM video signals onto a screen utilizes the concept that the width of the video heads are to be formed larger than the track of the video tape. The size of the video signals reproduced... | 06/19/1990 |
| 4887169 | Video signal recording and playback apparatus having varied-speed playback capability A video signal recording and playback apparatus for recording each field of a video signal as a plurality of segments on a plurality of tracks, including a circuit for inserting segment index signals after conversion of the video signal to a recording sig... | 12/12/1989 |
| 4878133 | Information signal reproducing apparatus in which a plurality of heads are selectively used A rotary head type reproducing apparatus having pairs of rotary heads each of the pairs consisting of two heads which have different azimuth angles and are arranged close to each other to reproduce signals from a record bearing medium on which many tracks... | 10/31/1989 |
| 4876614 | Track-readjusted magnetic-tape recorder with transverse tracking A track readjustment arrangement for a video magnetic tape recorder in which at least two magnetic heads travel across the direction of motion of the magnetic tape, for the purpose of scanning signals that are recorded on the tape. The magnetic heads are ... | 10/24/1989 |
