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公开(公告)号：AU553228B2
公开(公告)日：1986-07-10
申请号：AU8723982
申请日：1982-08-17
Applicant: SONY CORP
Inventor： HIGASHIHARA TERUAKI , YOSHIDA TADAO , KAWACHI HIDEO , NONAKA CHIAKI
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公开(公告)号：CA1182561A
公开(公告)日：1985-02-12
申请号：CA409182
申请日：1982-08-11
Applicant: SONY CORP
Inventor： HIGASHIHARA TERUAKI , NONAKA CHIAKI , YOSHIDA TADAO , KAWACHI HIDEO
Abstract: Apparatus for reproducing information recorded on a disc in substantially circular tracks on the latter includes a device for rotating the disc; a pick-up for reproducing the information recorded on the disc in the tracks; a tracking control circuit for adjusting the tracking position of the pick-up in forward and reverse transverse directions with respect to the tracks; and a circuit operative through the tracking control circuit for selectively establishing a slow-playback mode and a reverse slow-playback mode in each of which, after the pick-up reproduces a respective first predetermined number of the tracks while moving in the forward transverse direction, the tracking position of the pick-up is moved in the reverse transverse direction a respective second predetermined integral number of the tracks, the second predetermined integral number of tracks being less than twice the first predetermined number of tracks.
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公开(公告)号：SG125071A1
公开(公告)日：2006-09-29
申请号：SG200203570
申请日：2002-06-13
Applicant: SONY CORP
Inventor： IKEDA NAOTO , HIGASHIHARA TERUAKI
Abstract: The present invention relates to an objective lens driver including: a support base formed of a magnetic material, comprising a base portion, a support shaft projected from the base portion, and a pair of yokes respectively projected in the same direction as the support shaft from both side edges of the base portion and located oppositely to each other with the support shaft therebetween, the yokes having opposed surfaces to which magnets are fitted; and a movable portion supported on the support shaft of the support base so as to be turnable around the axis of the support shaft and slidable in the axial direction of the support shaft, holding an objective lens having an optical axis substantially coinciding with the axial direction of the support shaft, and comprising a focusing coil supplied with a driving current at the time of focusing control of laser light radiated onto a disk type recording medium through the objective lens, and at least a pair of tracking coils supplied with a driving current at the time of tracking control of the laser light, wherein the magnets, the yokes, the base portion, and the support shaft form a magnetic circuit.
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公开(公告)号：AU553629B2
公开(公告)日：1986-07-24
申请号：AU8724082
申请日：1982-08-17
Applicant: SONY CORP
Inventor： HIGASHIHARA TERUAKI , NONAKA CHIAKI , YOSHIDA TADAO , KAWACHI HIDEO
IPC: G11B7/09 , G11B19/20 , G11B20/10 , G11B21/08 , G11B27/10 , G11B7/08 , G11B19/02 , G11B21/12 , G11B19/26 , G11B27/36
Abstract: An apparatus for playing information recorded on a disc in substantially circular tracks on the latter includes a device for rotating the disc; a pickup for reproducing the information recorded on the disc; a tracking control circuit for adjusting the tracking position of the pickup in forward and reverse transverse directions with respect to the tracks; and a circuit operative through the tracking control circuit for selectively establishing a slow-playback mode and a reverse slow-playback mode in each of which, after the pickup reproduces a respective first predetermined number of the tracks while moving in the forward transverse direction, the tracking position of the pickup is moved in the reverse transverse direction a respective second predetermined integral number of tracks, the second predetermined number of tracks being less than twice the first predetermined number of tracks.
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公开(公告)号：FR2512250A1
公开(公告)日：1983-03-04
申请号：FR8214616
申请日：1982-08-25
Applicant: SONY CORP
Inventor： HIGASHIHARA TERUAKI , YOSHIDA TADAO , KAWACHI HIEDEO , NONAKA CHIAKI
Abstract: In an apparatus for reproducing digitized signals recorded in successive, substantially circular tracks on a rotated disc by means of a pickup of the optical type which, in a normal scanning state, scans the tracks in succession; a first or prepare-to-play command signal causes the pickup to reproduce the digitized signals for a predetermined interval corresponding to more than one of the tracks on the disc starting from a desired position on such one track and the digitized signals reproduced in that predetermined interval are stored, desirably in a random access memory (RAM), whereupon a standby state of the pickup is established in which the pickup traces a closed loop on the rotated disc within a range corresponding to the previously mentioned predetermined interval. Upon reception of a second or play command signal, the pickup is released from its standby state at the completion of the tracing of the closed loop during which the play command signal occurred and the normal scanning state of the pickup is reestablished. Further, in response to the second or play command signal, the stored digitized signals are read out from the RAM and transmitted, starting with the signals corresponding to the desired position irrespective of the rotational position of the disc at the time of the play command signal, and the digitized signals reproduced by the pickup on the reestablishment of its normal scanning state and, more particularly, commencing with the digitized signals following the predetermined interval, are sequentially stored in the RAM and then sequentially read out and transmitted therefrom.
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Patent Agency Ranking
公开(公告)号：FR2511800A1
公开(公告)日：1983-02-25
申请号：FR8214426
申请日：1982-08-20
Applicant: SONY CORP
Inventor： HIGASHIHARA TERUAKI , NONAKA CHIAKI , YOSHIDA TADAO , KAWACHI HIDEO
Abstract: An apparatus for playing information recorded on a disc in substantially circular tracks on the latter includes a device for rotating the disc; a pickup for reproducing the information recorded on the disc; a tracking control circuit for adjusting the tracking position of the pickup in forward and reverse transverse directions with respect to the tracks; and a circuit operative through the tracking control circuit for selectively establishing a slow-playback mode and a reverse slow-playback mode in each of which, after the pickup reproduces a respective first predetermined number of the tracks while moving in the forward transverse direction, the tracking position of the pickup is moved in the reverse transverse direction a respective second predetermined integral number of tracks, the second predetermined number of tracks being less than twice the first predetermined number of tracks.
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公开(公告)号：DE3231089C2
公开(公告)日：1994-06-01
申请号：DE3231089
申请日：1982-08-20
Applicant: SONY CORP
Inventor： HIGASHIHARA TERUAKI , NONAKA CHIAKI , YOSHIDA TADAO , KAWACHI HIDEO
Abstract: An apparatus for playing information recorded on a disc in substantially circular tracks on the latter includes a device for rotating the disc; a pickup for reproducing the information recorded on the disc; a tracking control circuit for adjusting the tracking position of the pickup in forward and reverse transverse directions with respect to the tracks; and a circuit operative through the tracking control circuit for selectively establishing a slow-playback mode and a reverse slow-playback mode in each of which, after the pickup reproduces a respective first predetermined number of the tracks while moving in the forward transverse direction, the tracking position of the pickup is moved in the reverse transverse direction a respective second predetermined integral number of tracks, the second predetermined number of tracks being less than twice the first predetermined number of tracks.
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公开(公告)号：CA1191602A
公开(公告)日：1985-08-06
申请号：CA409340
申请日：1982-08-12
Applicant: SONY CORP
Inventor： HIGASHIHARA TERUAKI , YOSHIDA TADAO , KAWACHI HIDEO , NONAKA CHIAKI
Abstract: DISC REPRODUCING APPARATUS In an apparatus for reproducing digitized signals recorded in successive, substantially circular tracks on a rotated disc by means of a pickup of the optical type which, in a normal scanning state, scans the tracks in succession; a first or prepare-to-play command signal causes the pickup to reproduce the digitized signals for a predetermined interval corresponding to more than one of the tracks on the disc starting from a desired position on such one track and the digitized signals reproduced in that predetermined interval are stored, desirably in a random access memory (RAM), whereupon a standby state of the pickup is established in which the pickup traces a closed loop on the rotated disc within a range corresponding to the previously mentioned predetermined interval. Upon reception of a second or play command signal, the pickup is released from its standby state at the completion of the tracing of the closed loop during which the play command signal occurred and the normal scanning state of the pickup is reestablished. Further, in response to the second or play command signal, the stored digitized signals are read out from the RAM and transmitted, starting with the signals corresponding to the desired position irrespective of the rotational position of the disc at the time of the play command signal, and the digitized signals reproduced by the pickup on the reestablishment of its normal scanning state and, more particularly, commencing with the digitized signals following the predetermined interval, are sequentially stored in the RAM and then sequentially read out and transmitted therefrom.
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公开(公告)号：GB2106698A
公开(公告)日：1983-04-13
申请号：GB8224233
申请日：1982-08-24
Applicant: SONY CORP
Inventor： KAWACHI HIDEO , NONAKA CHIAKA , YOSHIDA TADAO , HIGASHIHARA TERUAKI
Abstract: In an apparatus for reproducing digitized signals recorded in successive, substantially circular tracks on a rotated disc by means of a pickup of the optical type which, in a normal scanning state, scans the tracks in succession; a first or prepare-to-play command signal causes the pickup to reproduce the digitized signals for a predetermined interval corresponding to more than one of the tracks on the disc starting from a desired position on such one track and the digitized signals reproduced in that predetermined interval are stored, desirably in a random access memory (RAM), whereupon a standby state of the pickup is established in which the pickup traces a closed loop on the rotated disc within a range corresponding to the previously mentioned predetermined interval. Upon reception of a second or play command signal, the pickup is released from its standby state at the completion of the tracing of the closed loop during which the play command signal occurred and the normal scanning state of the pickup is reestablished. Further, in response to the second or play command signal, the stored digitized signals are read out from the RAM and transmitted, starting with the signals corresponding to the desired position irrespective of the rotational position of the disc at the time of the play command signal, and the digitized signals reproduced by the pickup on the reestablishment of its normal scanning state and, more particularly, commencing with the digitized signals following the predetermined interval, are sequentially stored in the RAM and then sequentially read out and transmitted therefrom.
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公开(公告)号：DE3231592A1
公开(公告)日：1983-03-10
申请号：DE3231592
申请日：1982-08-25
Applicant: SONY CORP
Inventor： HIGASHIHARA TERUAKI , YOSHIDA TADAO , KAWACHI HIDEO , NONAKA CHIAKI
Abstract: In an apparatus for reproducing digitized signals recorded in successive, substantially circular tracks on a rotated disc by means of a pickup of the optical type which, in a normal scanning state, scans the tracks in succession; a first or prepare-to-play command signal causes the pickup to reproduce the digitized signals for a predetermined interval corresponding to more than one of the tracks on the disc starting from a desired position on such one track and the digitized signals reproduced in that predetermined interval are stored, desirably in a random access memory (RAM), whereupon a standby state of the pickup is established in which the pickup traces a closed loop on the rotated disc within a range corresponding to the previously mentioned predetermined interval. Upon reception of a second or play command signal, the pickup is released from its standby state at the completion of the tracing of the closed loop during which the play command signal occurred and the normal scanning state of the pickup is reestablished. Further, in response to the second or play command signal, the stored digitized signals are read out from the RAM and transmitted, starting with the signals corresponding to the desired position irrespective of the rotational position of the disc at the time of the play command signal, and the digitized signals reproduced by the pickup on the reestablishment of its normal scanning state and, more particularly, commencing with the digitized signals following the predetermined interval, are sequentially stored in the RAM and then sequentially read out and transmitted therefrom.
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