-
公开(公告)号：CA1170356A
公开(公告)日：1984-07-03
申请号：CA380333
申请日：1981-06-22
Applicant: SONY CORP
Inventor： KAIMAI HIROYUKI , SONODA MASAKAZU , KOMATSU MASAAKI , SAKAI ATSUO , KAMAI TOSHIMITSU
Abstract: In an apparatus which reproduces video signals from oblique tracks successively formed on a tape, the tape is intermittently moved by a tape capstan motor being driven by a motor drive pulse which is generated by an amount corresponding to a predetermined number of said tracks at every predetermined time interval for slowmotion reproduction of the recorded video signals. A pulse-width or amplitude of the motor drive pulse is controlled in accordance with the slow-motion speed.
-
公开(公告)号：CH642798A5
公开(公告)日：1984-04-30
申请号：CH362181
申请日：1981-06-03
Applicant: SONY CORP
Inventor： KAIMAI HIROYUKI , SONODA MASAKAZU , KOMATSU MASAAKI , SAKAI ATSUO , KAMAI TOSHIMITSU
-
公开(公告)号：DE3106372A1
公开(公告)日：1981-12-17
申请号：DE3106372
申请日：1981-02-20
Applicant: SONY CORP
Inventor： SONODA MASAKAZU , KAIMAI HIROYUKI , KOMATSU MASAAKI
-
公开(公告)号：FR2484122A1
公开(公告)日：1981-12-11
申请号：FR8111104
申请日：1981-06-04
Applicant: SONY CORP
Inventor： KAIMAI HIROYUKI , SONODA MASAKAZU , KOMATSU MASAAKI , SAKAI ATSUO , KAMAI TOSHIMITSU
Abstract: In an apparatus for reproducing video signals recorded in successive parallel tracks extending at an angle to the lengthwise direction of a tape and wherein two main reproducing heads having different azimuth angles with respect to each other are arranged to be diametrically opposed and alternately reproduce the video signals from the tracks when the tape is transported lengthwise at a standard speed, and an auxiliary reproducing head having the same azimuth angle as one of the main reproducing heads is circumferentially displaced by (n+0.25)H' from another of the main reproducing heads where n is zero or a positive integer and H' is an angle corresponding to one horizontal scan line on the tape, from the auxiliary reproducing head and reproduces the video signals in cooperation with one of the main reproducing heads when the tape is stopped and delay control means for alternately delaying the reproduced video signal from one of the main reproducing heads and the video signal from the auxiliary reproducing head by an amount corresponding to a break in the continuity of the horizontal synchronizing pulses which occurs in synchronism with the changing of the reproduction of said video signals by the one of the main reproducing heads and auxiliary reproducing head.
-
公开(公告)号：AT39315T
公开(公告)日：1988-12-15
申请号：AT84302388
申请日：1984-04-06
Applicant: SONY CORP
Inventor： SONODA MASAKAZU , NAKAYAMA KOICHI , SADO TOSHIYUKI
Abstract: In an apparatus having a record mode for recording video or other information signals in successive parallel information tracks on a record tape by means of a plurality of rotary heads repeatedly scanning across said tape and having respective gaps with different azimuth angles, and in which the apparatus is changeable to a playback mode for causing each of said heads to provide a respective output when it is scanning an information track in which information signals have been previously recorded by a head with a gap having the same azimuth angle; clogging of one or more of the head gaps which would prevent further recording is detected, in the playback mode, by switching from one to another of the outputs of the heads during each period required forthe scanning of the tape by each of the heads, detecting the levels of the head outputs during such switching therebetween, and operating a clog indicator when the detected levels of the head outputs are insufficient during the scanning of the tape by each of the heads. In order to avoid a false clog indication, the operation of the clog indicator is inhibited when the usual fixed head does not reproduce control signals in the playback mode, for example, as when there has been no previous recording of information signals on the record tape.
-
Patent Agency Ranking
公开(公告)号：PH18833A
公开(公告)日：1985-10-09
申请号：PH25720
申请日：1981-06-04
Applicant: SONY CORP
Inventor： KAIMAI HIROYUKI , SONODA MASAKAZU , KOMATSU MASAAKI , SAKAI ATSUO , KAMAI TOSHIMITSU
Abstract: In an apparatus for reproducing video signals recorded in successive parallel tracks extending at an angle to the lengthwise direction of a tape and wherein two main reproducing heads having different azimuth angles with respect to each other are arranged to be diametrically opposed and alternately reproduce the video signals from the tracks when the tape is transported lengthwise at a standard speed, and an auxiliary reproducing head having the same azimuth angle as one of the main reproducing heads is circumferentially displaced by (n+0.25)H' from another of the main reproducing heads where n is zero or a positive integer and H' is an angle corresponding to one horizontal scan line on the tape, from the auxiliary reproducing head and reproduces the video signals in cooperation with one of the main reproducing heads when the tape is stopped and delay control means for alternately delaying the reproduced video signal from one of the main reproducing heads and the video signal from the auxiliary reproducing head by an amount corresponding to a break in the continuity of the horizontal synchronizing pulses which occurs in synchronism with the changing of the reproduction of said video signals by the one of the main reproducing heads and auxiliary reproducing head.
-
公开(公告)号：AU2660384A
公开(公告)日：1984-10-11
申请号：AU2660384
申请日：1984-04-06
Applicant: SONY CORP
Inventor： SONODA MASAKAZU , NAKAYAMA KOICHI , SADO TOSHIYUKI
IPC: G11B5/027 , G11B5/40 , G11B5/455 , G11B15/02 , G11B15/04 , G11B15/14 , G11B27/36 , H04N5/782 , G11B5/41 , G11B5/46
Abstract: In an apparatus having a record mode for recording video or other information signals in successive parallel information tracks on a record tape by means of a plurality of rotary heads repeatedly scanning across said tape and having respective gaps with different azimuth angles, and in which the apparatus is changeable to a playback mode for causing each of said heads to provide a respective output when it is scanning an information track in which information signals have been previously recorded by a head with a gap having the same azimuth angle; clogging of one or more of the head gaps which would prevent further recording is detected, in the playback mode, by switching from one to another of the outputs of the heads during each period required forthe scanning of the tape by each of the heads, detecting the levels of the head outputs during such switching therebetween, and operating a clog indicator when the detected levels of the head outputs are insufficient during the scanning of the tape by each of the heads. In order to avoid a false clog indication, the operation of the clog indicator is inhibited when the usual fixed head does not reproduce control signals in the playback mode, for example, as when there has been no previous recording of information signals on the record tape.
-
公开(公告)号：FR2519817A1
公开(公告)日：1983-07-18
申请号：FR8216221
申请日：1982-09-27
Applicant: SONY CORP
Inventor： SONODA MASAKAZU , TERAJIMA TAKASHI , OZAWA MINORU
-
公开(公告)号：GB2108718A
公开(公告)日：1983-05-18
申请号：GB8227311
申请日：1982-09-24
Applicant: SONY CORP
Inventor： SONODA MASAKAZU , TERAJIMA TAKASHI , OZAWA MINORU
Abstract: A control circuit for a DC capstan motor used for driving a tape having control signals thereon is adapted for accurage stopping of the tape during intermittent-motion operation. A frequency generator coupled to the motor generates a frequency signal whose rate is proportional to the motor's speed. A position signal generating circuit generates a position value that increments by steps upon occurrences of the frequency signal. A clamp circuit clamps the position value to a clamping level upon detection of the control signals. A brake start signal generator provides a brake start pulse signal when the position value exceeds a predetermined threshold, and this brake start pulse signal is used to commence braking of the motor. In order to permit accurate stopping in both forward and reverse directions, the clamping circuit provides one clamping level when a forward mode is selected and another clamping level when a reverse mode is selected.
-
公开(公告)号：DE3124426A1
公开(公告)日：1982-03-25
申请号：DE3124426
申请日：1981-06-22
Applicant: SONY CORP
Inventor： KAIMAI HIROYUKI , SONODA MASAKAZU , KOMATSU MASAAKI , SAKAI ATSUO , KAMAI TOSHIMITSU
Abstract: In an apparatus which reproduces video signals using rotating heads to scan oblique tracks formed on a tape, the tape is intermittently moved and stopped by a tape capstan motor which is driven by a motor drive pulse. The motor drive pulse is generated at predetermined time intervals corresponding to a predetermined number of tracks for slow-motion reproduction of the recorded video signals. Deviations in the amount of tape intermittently advanced, as measured by a predetermined number of tracks, is avoided by varying the pulse-width or amplitude of the motor drive pulse.
-
-
-
-
-
-
-
-
-
Search Results
63
records
(took 0.025 seconds)
