-
公开(公告)号：DE69020917D1
公开(公告)日：1995-08-24
申请号：DE69020917
申请日：1990-02-07
Applicant: SONY CORP
Inventor： KUTNER MICHAEL A , TATSUZAWA KAICHI
Abstract: A video signal processing circuit is disclosed in which error correction, error concealment and weighted mean processing (in this order) are performed on input playback video signals from a video tape recorder, wherein, for performing error concealment on erroneous sample data on which error correction has not been feasible a plurality of error concealment methods or algorithms are provided. One of the available error concealment methods is selected in dependence upon the state of error flags of sample data in the neighboring and/or temporal direction of the erroneous sample data to perform a concealment in accordance with the error pattern to provide satisfactory error concealment for a broad range of error rates.
-
公开(公告)号：DE3751343D1
公开(公告)日：1995-07-20
申请号：DE3751343
申请日：1987-04-08
Applicant: SONY CORP
Inventor： ASAI TOSHIYA , KOTANI HIROKI , TATSUZAWA KAICHI
IPC: G11B20/12 , G11B20/18 , G11B27/30 , G11B27/32 , H04N5/78 , H04N5/7826 , H04N5/92 , H04N5/926 , H04N5/945 , H04N9/802
Abstract: In recording a time code signal together with digital video and audio signals, at least one channel of a digital audio signal is supplied to rotary heads scanning successive slant tracks on a tape for recording in intermediate sections of the slant tracks, a digital video signal is supplied to the same heads for recording in other sections of the slant tracks situated before and after the intermediate sections and being relatively longer than the latter, and the time code signal is also supplied to the rotary heads for recording in the intermediate sections with the same time codes being represented by the time code signal recorded in the intermediate sections of a successive plurality of the slant tracks which contain the digital video signal for a respective frame.
-
公开(公告)号：AU601969B2
公开(公告)日：1990-09-27
申请号：AU7134487
申请日：1987-04-09
Applicant: SONY CORP
Inventor： ASAI TOSHIYA , KOTANI HIROKI , TATSUZAWA KAICHI
IPC: G11B20/12 , G11B20/18 , G11B27/30 , G11B27/32 , H04N5/78 , H04N5/7826 , H04N5/92 , H04N5/926 , H04N5/945 , H04N9/802 , H04N5/783 , G11B5/008
Abstract: In recording a time code signal together with digital video and audio signals, at least one channel of a digital audio signal is supplied to rotary heads scanning successive slant tracks on a tape for recording in intermediate sections of the slant tracks, a digital video signal is supplied to the same heads for recording in other sections of the slant tracks situated before and after the intermediate sections and being relatively longer than the latter, and the time code signal is also supplied to the rotary heads for recording in the intermediate sections with the same time codes being represented by the time code signal recorded in the intermediate sections of a successive plurality of the slant tracks which contain the digital video signal for a respective frame.
-
公开(公告)号：DE3685991T2
公开(公告)日：1993-03-04
申请号：DE3685991
申请日：1986-05-20
Applicant: SONY CORP
Inventor： ABE TAKAO , TATSUZAWA KAICHI , KOMINAMI HISANORI , SUMA TETSURO , OGAWA TETSUO , KOTANI HIROKI
Abstract: An apparatus for decoding error detecting or correcting code which is constructed from digital information data and redundant data for detecting or correcting errors in the digital information data, the digital information data and redundant data being reproduced from a record medium by a playback apparatus that operates in a normal speed mode and fast and slow speed modes, includes a first decoder for decoding the error detecting or correcting code and for generating flag data indicating error conditions of the digital information data, a first memory for storing the digital information data subjected to the decoding in the first decoder, and a second memory for storing flag data, and a controller provided with a mode signal indicating a normal playback mode or a fast playback mode of the record medium playback apparatus for controlling the first and second memories so as to read out the digital information data and flag data, respectively, when the mode signal indicates the normal reproducing mode and so as to read out the digital information data without error and the flag data, respectively, when the mode signal indicates the fast reproducing mode.
-
5.发明专利
公开(公告)号：CA1284213C
公开(公告)日：1991-05-14
申请号：CA534122
申请日：1987-04-08
Applicant: SONY CORP
Inventor： ASAI TOSHIYA , KOTANI HIROKI , TATSUZAWA KAICHI
IPC: G11B20/12 , G11B20/18 , G11B27/30 , G11B27/32 , H04N5/78 , H04N5/7826 , H04N5/92 , H04N5/926 , H04N5/945 , H04N9/802
Abstract: RECORDING AND REPRODUCING A TIME CODE SIGNAL TOGETHER WITH DIGITAL VIDEO AND AUDIO SIGNALS In recording a time code signal together with digital video and audio signals, at least one channel of a digital audio signal is supplied to rotary heads scanning successive slant tracks on a tape for recording in intermediate sections of the slant tracks, a digital video signal is supplied to the same heads for recording in other sections of the slant tracks situated before and after the intermediate sections and being relatively longer than the latter, and the time code signal is also supplied to the rotary heads for recording in the intermediate sections with the same time codes being represented by the time code signal recorded in the intermediate sections of a successive plurality of the slant tracks which contain the digital video signal for a respective frame.
-
Patent Agency Ranking
公开(公告)号：AU530182B2
公开(公告)日：1983-07-07
申请号：AU5375379
申请日：1979-12-12
Applicant: SONY CORP
Inventor： TATSUZAWA KAICHI
Abstract: A generating circuit regenerates a color sub-carrier of a PAL color television system on the basis of a reproduced horizontal sync (synchronizing) pulse and a color burst signal. In order to avoid discontinuity of the regenerated sub-carrier due to signal drop-outs, the reproduced sync pulse is supplied to a counter type automatic frequency control (AFC) circuit which can supply a continuous horizontal frequency signal in spite of drop-outs of the reproduced horizontal sync pulse. When the reproduced burst signal is dropped out, the phase of the sub-carrier signal is changed from one phase to another, for example, from +135 DEG to -135 DEG , in order to maintain the swinging conditions of the sub-carrier sequence of the PAL color television system.
-
公开(公告)号：DE2658676A1
公开(公告)日：1977-07-14
申请号：DE2658676
申请日：1976-12-23
Applicant: SONY CORP
Inventor： EBIHARA NORIO , TATSUZAWA KAICHI
Abstract: A method of and apparatus for reducing the noise of an input signal, such as a composite video signal. An orthogonal transform of the input signal is derived, this orthogonal transform having n transformed signal components. At least some of these signal components are suppressed if their respective signal levels are less than a threshold level. Preferably, the n transformed signal components correspond to different portions of the input signal; and those components representing the higher frequency portions are suppressed if their signal levels are less than the threshold level. Following this signal suppression, the n transformed signal components are reconverted into substantially the input signal, less the suppressed components.
-
公开(公告)号：DE69020917T2
公开(公告)日：1995-11-30
申请号：DE69020917
申请日：1990-02-07
Applicant: SONY CORP
Inventor： KUTNER MICHAEL A , TATSUZAWA KAICHI
Abstract: A video signal processing circuit is disclosed in which error correction, error concealment and weighted mean processing (in this order) are performed on input playback video signals from a video tape recorder, wherein, for performing error concealment on erroneous sample data on which error correction has not been feasible a plurality of error concealment methods or algorithms are provided. One of the available error concealment methods is selected in dependence upon the state of error flags of sample data in the neighboring and/or temporal direction of the erroneous sample data to perform a concealment in accordance with the error pattern to provide satisfactory error concealment for a broad range of error rates.
-
公开(公告)号：DE3751343T2
公开(公告)日：1995-11-23
申请号：DE3751343
申请日：1987-04-08
Applicant: SONY CORP
Inventor： ASAI TOSHIYA , KOTANI HIROKI , TATSUZAWA KAICHI
IPC: G11B20/12 , G11B20/18 , G11B27/30 , G11B27/32 , H04N5/78 , H04N5/7826 , H04N5/92 , H04N5/926 , H04N5/945 , H04N9/802
Abstract: In recording a time code signal together with digital video and audio signals, at least one channel of a digital audio signal is supplied to rotary heads scanning successive slant tracks on a tape for recording in intermediate sections of the slant tracks, a digital video signal is supplied to the same heads for recording in other sections of the slant tracks situated before and after the intermediate sections and being relatively longer than the latter, and the time code signal is also supplied to the rotary heads for recording in the intermediate sections with the same time codes being represented by the time code signal recorded in the intermediate sections of a successive plurality of the slant tracks which contain the digital video signal for a respective frame.
-
公开(公告)号：CA1313258C
公开(公告)日：1993-01-26
申请号：CA500741
申请日：1986-01-30
Applicant: SONY CORP
Inventor： TATSUZAWA KAICHI , ABE TAKAO , OGAWA TETSUO
IPC: G11B5/588 , G11B15/467 , G11B15/473 , G11B33/10
Abstract: A servo circuit is provided for use with a reproducing apparatus wherein an information signal is reproduced from an elongated slant track formed on a tape which is wrapped on the periphery of a guide drum having a rotary head. The servo circuit includes a circuit for detecting an intermediate point of the length of the slant track and generating a timing signal at the detection of the intermediate point and a circuit for comparing the timing signal with a reference pulse to generate a control signal. A relative position of the slant track to the rotary head is controlled in accordance with the control signal.
-
-
-
-
-
-
-
-
-
Search Results
23
records
(took 0.022 seconds)
