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公开(公告)号：AT139861T
公开(公告)日：1996-07-15
申请号：AT90313083
申请日：1990-12-03
Applicant: SONY CORP
Inventor： TAMURA MASAFUMI , TANAKA MASATO , KATOKU TAKASHI , KOMORIYA MORIHIRO
Abstract: In a tape recording and/or reproducing apparatus having a head drum (21) and a plurality of rotary elements including at least rotary heads (23) associated with the head drum for recording and/or reproducing information signals on a magnetic tape wrapped around the head drum, a capstan (72) for transporting the magnetic tape at a constant speed, and supply and take-up reel bases (13,14) for engaging a pair of reels around which the magnetic tape is wound in a tape cassette and for driving the respective reels; a single motor (64) is directly coupled to one of the rotary elements and drives the other rotary elements through a non-slip mechanical transmission for synchronously rotating at least the rotary heads, the capstan and the supply and take-up reel bases.
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公开(公告)号：DE69118795D1
公开(公告)日：1996-05-23
申请号：DE69118795
申请日：1991-09-17
Applicant: SONY CORP
Inventor： TANAKA MASATO , YANAKA KIYOTAKA
IPC: G11B23/087 , G11B23/28 , G11B23/04 , G11B23/08
Abstract: A tape cassette has one or more manually settable slider elements that are detected to prevent erroneous erasure of information recorded on the cassette. The or each slider (50) slides in a through hole (31) in the cassette case (2, 3) and includes stops (53a, 53b) that limit the travel of the slider element (50) by co-operating with protrusions or shoulders that are formed by the respective half cases (2, 3) making up the cassette case. The slider element (50) also includes a click-stop protrusion (51) that co-operates with a protrusion (32) in the through hole (31) that is formed in only one of the two half-cases (2, 3). The slider element (50) further includes a through slot (55) that permits deformation of the slider element (50) as the click-stop protrusion (51) goes over the protrusion (32) in the through-hole (31), thereby requiring less force to move the element. The stops (53a, 53b) can be formed by two spaced apart protrusions that also permit deformation of the slide element as the click-stop protrusion (51) travels past the protrusion (32) in the through-hole (31).
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公开(公告)号：AT134791T
公开(公告)日：1996-03-15
申请号：AT90109814
申请日：1984-06-15
Applicant: SONY CORP
Inventor： OSAWA EIICHI , TANAKA MASATO , YOSHIZAWA MAMORU , NAKAI JUN , KOJIMA YUICHI
Abstract: A method of recording a digital data signal, such as an audio PCM signal, onto a recording medium in the longitudinal direction thereof, together with an apparatus which is suitable for this recording method. Even-numbered words and odd-numbered words in a digital data signal are recorded on a first track group and a second track group, respectively, which are separated from each other in the widthwise direction of a recording medium, to prevent a series of words becoming error words because of, for example, a flaw in the recording medium in the longitudinal direction thereof. The data format is changed at the input and output of a recording encoder to enable an error correction code and a recording circuit to be used in common for digital tape recorders which have different numbers of tracks, e.g., n tracks and 2n tracks. When an error correction code is recorded in such a manner that one word in the digital data signal is divided into a plurality of symbols which are formed into an error correction code, a plurality of symbols of the same word are recorded at a position at which error correlation is strong, making effective use of the error correction capacity of the error correction code.
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公开(公告)号：DE69018581T2
公开(公告)日：1995-09-28
申请号：DE69018581
申请日：1990-12-07
Applicant: SONY CORP
Inventor： TAKAGI RYUJI , TANAKA MASATO , NISHIOKA HISAO
Abstract: The scanning locus of a rotary head type recording and reproducing apparatus is evaluated by reproducing a tape (1) having a number of oblique recording tracks (3). Respective track addresses are assigned to each track, and each track includes a number of block addresses. The track address and block address reproduced at a given time are supplied to an address map data storage device (17) to generate in the address map data storage device a set of map information indicative of the scanning conditions of the rotary heads (12A, 12B). This makes it possible to determine easily whether the reproducing conditions along the scanning locus with respect to the recording track are good or bad.
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公开(公告)号：HK120695A
公开(公告)日：1995-07-28
申请号：HK120695
申请日：1995-07-20
Applicant: SONY CORP
Inventor： OSAWA EIICHI , TANAKA MASATO , YOSHIZAWA MAMORU , NAKAI JUN , KOJIMA YUICHI
Abstract: A method of recording a digital data signal, such as an audio PCM signal, onto a recording medium in the longitudinal direction thereof, together with an apparatus which is suitable for this recording method. Even-numbered words and odd-numbered words in a digital data signal are recorded on a first track group and a second track group, respectively, which are separated from each other in the widthwise direction of a recording medium, to prevent a series of words becoming error words because of, for example, a flaw in the recording medium in the longitudinal direction thereof. The data format is changed at the input and output of a recording encoder to enable an error correction code and a recording circuit to be used in common for digital tape recorders which have different numbers of tracks, e.g., n tracks and 2n tracks. When an error correction code is recorded in such a manner that one word in the digital data signal is divided into a plurality of symbols which are formed into an error correction code, a plurality of symbols of the same word are recorded at a position at which error correlation is strong, making effective use of the error correction capacity of the error correction code.
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Patent Agency Ranking
公开(公告)号：GB2265510B
公开(公告)日：1995-07-05
申请号：GB9305916
申请日：1993-03-22
Applicant: SONY CORP
Inventor： NOGUCHI TATSUMI , TANAKA MASATO
Abstract: In a digital signal reproducing apparatus various adjustment jobs and measurement jobs can be automatically executed by a simple operation by providing a clock generator, an external waveform equalizer, an error detector, an edge detection circuit, and a DC following circuit in addition to a waveform equalizer by which a reproduced analog signal waveform is processed and then converted to a digital signal. The digital signal is equalized by a digital filter and sampled and the digital signal and extracted clocks are supplied. The reproducing level and the equalizer coefficients can be automatically adjusted and an error rate can be automatically measured. A pulse width modulation or bias recording can be automatically determined and a recording current can be automatically adjusted by the system and the inclination of magnetic heads and the distance between the heads can also be automatically measured.
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公开(公告)号：DE3486361T2
公开(公告)日：1995-04-20
申请号：DE3486361
申请日：1984-06-15
Applicant: SONY CORP
Inventor： OSAWA EIICHI , TANAKA MASATO , YOSHIZAWA MAMORU , NAKAI JUN , KOJIMA YUICHI
Abstract: A method of recording a digital data signal, such as an audio PCM signal, onto a recording medium in the longitudinal direction thereof, together with an apparatus which is suitable for this recording method. Even-numbered words and odd-numbered words in a digital data signal are recorded on a first track group and a second track group, respectively, which are separated from each other in the widthwise direction of a recording medium, to prevent a series of words becoming error words because of, for example, a flaw in the recording medium in the longitudinal direction thereof. The data format is changed at the input and output of a recording encoder to enable an error correction code and a recording circuit to be used in common for digital tape recorders which have different numbers of tracks, e.g., n tracks and 2n tracks. When an error correction code is recorded in such a manner that one word in the digital data signal is divided into a plurality of symbols which are formed into an error correction code, a plurality of symbols of the same word are recorded at a position at which error correlation is strong, making effective use of the error correction capacity of the error correction code.
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公开(公告)号：AT100961T
公开(公告)日：1994-02-15
申请号：AT84902369
申请日：1984-06-15
Applicant: SONY CORP
Inventor： TANAKA MASATO , HIMENO TAKUJI
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公开(公告)号：DE3870893D1
公开(公告)日：1992-06-17
申请号：DE3870893
申请日：1988-01-27
Applicant: SONY CORP
Inventor： TANAKA MASATO , HIMENO TAKUJI , SAKO YOICHIRO
Abstract: For recording digital data on a recording medium, an identification code for indicating that the digital data is a series of recording data and an error check code for error checking of digital data forming a block are added for each block of the data. The identification code is inherently contained in the error check code to suppress an increase of redundancy.
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公开(公告)号：AU8385191A
公开(公告)日：1992-03-26
申请号：AU8385191
申请日：1991-09-13
Applicant: SONY CORP
Inventor： TANAKA MASATO , YANAKA KIYOTAKA
IPC: G11B23/28 , G11B23/087 , G11B23/32 , G11B23/04 , G11B15/05
Abstract: A tape cassette has one or more manually settable slider elements that are detected to prevent erroneous erasure of information recorded on the cassette. The or each slider (50) slides in a through hole (31) in the cassette case (2, 3) and includes stops (53a, 53b) that limit the travel of the slider element (50) by co-operating with protrusions or shoulders that are formed by the respective half cases (2, 3) making up the cassette case. The slider element (50) also includes a click-stop protrusion (51) that co-operates with a protrusion (32) in the through hole (31) that is formed in only one of the two half-cases (2, 3). The slider element (50) further includes a through slot (55) that permits deformation of the slider element (50) as the click-stop protrusion (51) goes over the protrusion (32) in the through-hole (31), thereby requiring less force to move the element. The stops (53a, 53b) can be formed by two spaced apart protrusions that also permit deformation of the slide element as the click-stop protrusion (51) travels past the protrusion (32) in the through-hole (31).
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