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81. 发明专利

JPH01213803A RECORDING AND REPRODUCING DEVICE 失效
公开(公告)号：JPH01213803A
公开(公告)日：1989-08-28
申请号：JP3983088
申请日：1988-02-22
申请人： CANON KK
发明人： TAKIMOTO HIROYUKI
IPC分类号： H04N5/7826 , G11B5/027 , G11B15/02 , G11B20/02 , G11B31/00
摘要： PURPOSE:To obtain a recording and reproducing device to have satisfactory operability and to be compact and light in weight at a low cost by selectively switching a connecting terminal to the input terminal of a recording signal and the output terminal of a reproducing signal based on the operation of an operating part between a recording and reproducing means and the connecting terminal with an external part. CONSTITUTION:A video signal from a camera and a video signal from an external connecting terminal 8 are switched by a changing-over switch 2 and inputted to the IN of a VTR part 3. The OUT of the VTR part 3 is switched by a changing-over switch 4 with the external connecting terminal 8. In a condition that both changing-over switches 2 and 4 are connected in an (a) side, the video signal from a camera part 1 is outputted through the VTR part 3 to the external output terminal 8. When an LINE key 7 is pushed in a halt mode, a CPU5 connects both changing-over switches 2 and 4 in a (b) side. As a result, the terminal 8 is connected to the IN of the VTR part 3 and the VTR part 3 goes to a condition that the externally inputted video signal can be recorded.

82. 发明专利

JPS62116085A REPRODUCING DEVICE 失效
公开(公告)号：JPS62116085A
公开(公告)日：1987-05-27
申请号：JP25495585
申请日：1985-11-15
申请人： CANON KK
发明人： TAKIMOTO HIROYUKI
IPC分类号： G11B15/14 , G11B15/467 , H04N5/93
摘要： PURPOSE:To obtain a satisfactory reproducion with a simple circuit in the case of a speed change reproduction by providing plural sets of rotating heads having different azimuth angles from one another and disposed in close contact with one another and selectively using respective heads by using tracking control signals obtained from reproducing signals from the respective heads. CONSTITUTION:Heads CH1, CH4, and CH2, CH3 respectively have the same azimuth angle and the azimuth angles of the former and the latter are different. The head CH1, CH3 and the CH2, CH4 are respectively disposed in close contact with each other. Change over switches SW1, SW2 are controlled by a pulse signal (ATF.P) obtained based on the tracking control signal (ATF signal) and the outputs thereof become (CH1+CH3), (CH2+CH4), respectively. An SW3 is changed over by a changing signal (30PG) synchronously with the rotation of a rotating drum and its output becomes (RF). Accordingly, even when a recording medium is run at a speed different from a recording time, the satisfactory reproduction is obtained with the simple circuit.

83. 发明专利

JPS6282533A INFORMATION SIGNAL RECORDING DEVICE 失效
公开(公告)号：JPS6282533A
公开(公告)日：1987-04-16
申请号：JP22200185
申请日：1985-10-07
申请人： CANON KK
发明人： TAKIMOTO HIROYUKI , OTOGAWA MITSUHIRO , SATO TAKAHARU , TAKAHASHI KOJI , EDAKUBO HIROO
IPC分类号： G11B15/087 , G11B5/027
摘要： PURPOSE:To prevent the miserasion of the recorded information by recording the detecting signal for prevention of miserasion together with the information signal and detecting said detecting signal contained in the reproduction signal of a rotary erasion head FEH in a record mode. CONSTITUTION:The detection signal for prevention of miserasion is recorded at the position set immediately after a head rushes to a tape. The signal which is reproduced by a FEH34 via the side L of a switch 37 is amplified by an amplifier 39 and the detection signal for miserasion is separation for wave detection through a BPF and detected. This detection signal is compared with the prescribed voltage 44 by a comparator 41. Thus the detection signal for prevention of miserasion is detected by the FEH34. Then a signal of a high level is supplied to the D input of a flip-flop FF42. The Q output (h) of the FF42 is set at a high level and the output of an AND gate 50 is changed to a low level regardless of the output of an exclusive logic circuit 49. Thus the supply of the erasion signal is inhibited to the FEH34. While the Q output of an FF52 is set at a low level after the output of the gate 50 is changed to a low level. Then a switch 35 is connected to the L side to inhibit a recording action.

84. 发明专利

JPS6214586A ROTARY HEAD TYPE REPRODUCING DEVICE 失效
公开(公告)号：JPS6214586A
公开(公告)日：1987-01-23
申请号：JP15302285
申请日：1985-07-11
申请人： CANON KK
发明人： TAKIMOTO HIROYUKI
IPC分类号： G11B5/008 , G11B5/027 , G11B15/12 , G11B15/14 , G11B15/18 , H04N5/783
摘要： PURPOSE:To obtain a good reproduced signal which does not damage heads and a recording medium with simple constitution by using a pair of heads arranged in proximity to each other alternatively for each track to reproduce the signal. CONSTITUTION:Wide heads CH1 and CH2 are fixed onto a rotating drum 1 with 180 deg. phase difference and have azimuth angles different from each other. Narrow heads CH3 and CH4 are fixed to the rotating drum 1 with 180 deg. phase difference. Wide heads and narrow heads different in azimuth angle are arranged in proximity to each other, that is, heads CH1 and CH3 are arranged in proximity to each other, and heads CH2 and CH4 are arranged similarly. The tape- shaped recording medium is run continuously and a pair of heads CH1 and CH3 or a pair of heads CH2 and CH4 arranged close are used alternatively for each track to reproduce signals.

85. 发明专利

JPS61179688A INFORMATION SIGNAL REPRODUCING DEVICE 失效
公开(公告)号：JPS61179688A
公开(公告)日：1986-08-12
申请号：JP2046185
申请日：1985-02-05
申请人： CANON KK
发明人： KOBAYASHI HIROYUKI , TAKIMOTO HIROYUKI
IPC分类号： H04N5/93
摘要： PURPOSE:To attain excellent reproduction independently of the carrying speed of a recording medium by changing over the gain of an amplifier in a reproduction pilot signal transmission line in the detection of a tracking error signal using a reproduced pilot signal. CONSTITUTION:When a reproduced RF signal is inputted, a 4-frequency pilot signal having a frequency component of

86. 发明专利

JPS61144704A ROTARY HEAD TYPE RECORDING OR REPRODUCING DEVICE 失效
公开(公告)号：JPS61144704A
公开(公告)日：1986-07-02
申请号：JP26566684
申请日：1984-12-17
申请人： CANON KK
发明人： KOZUKI SUSUMU , TAKIMOTO HIROYUKI , KASHIDA MOTOICHI , TAKAHASHI KOJI , NAGASAWA KENICHI
IPC分类号： G11B20/00 , G11B5/008 , G11B5/02 , G11B15/087 , G11B15/18 , G11B15/467 , G11B20/10 , G11B27/34 , G11B27/36
摘要： PURPOSE:To grasp the recording state of all areas by dividing a tape type recording medium lengthwise into plural areas and deciding on the recording state of each area on the basis of the generation timing of the pilot signal in outputs of rotary heads. CONSTITUTION:The magnetic tape 1 is divided lengthwise into plural areas and information signals are recorded in and reproduced from respective areas, one by one, by rotary heads 3 and 4 which trace the tape 1 in its width direction. When they are recorded, a pilot signal for tracking from a pilot signal generator 31 is recorded together with the output of a PCM audio circuit 22 and when they are reproduced, a reproduction output is obtained from the circuit 22 and tracking control is carried out by an ATF circuit 26. A pilot signal in the outputs of the heads 3 and 4 is detected by an area decision circuit 28 through a gate circuit 27 which is controlled by a gate pulse generating circuit 17 and the circuit 28 decides whether each area is a already recorded or not, so that the result is displayed on a display device 29. Thus, the recording states of all the areas are grasped.

87. 发明专利

JPS60140554A VIDEO SIGNAL REPRODUCING DEVICE 失效
公开(公告)号：JPS60140554A
公开(公告)日：1985-07-25
申请号：JP24533683
申请日：1983-12-28
申请人： CANON KK
发明人： TAKIMOTO HIROYUKI
IPC分类号： G11B5/008 , G11B15/087 , G11B15/12 , G11B15/18 , G11B15/467
摘要： PURPOSE:To discriminate intervals of recording tracks, namely, a medium transporting speed for recording by using effectively four kinds of pilot signal superposed successively onto each recording track. CONSTITUTION:A tape speed detecting circuit 8 consists of a pilot detecting circuit 16 which detects four kinds of pilot signal independently one another, the first speed error detecting circuit 17 which detects it in accordance with the detection signal of the pilot detecting circuit 16 that four kinds of pilot signal are reproduced in a one-field time, the second speed error detecting circuit 18 which detects it in accordance with the detection signal of the pilot detecting circuit 16 that two or more kinds of pilot signal are not reproduced in a two-field time, and a control circuit 19 which generates a reproducing mode switching signal in accordance with output signals of velocity error detecting circuits 17 and 18. Individual parts of a device are so controlled that the SP mode is set if said reproducing mode switching signal 19a is in the high level and the LP mode is set if this signal 19a is in the low level, and a capstan motor is controlled to switch the transporting speed of a tape, and a switch is changed over to switch the head used for reproducing, thus switching the reproducing mode to/from the SP mode from/to the LP mode.

88. 发明专利

JPS58111492A VIDEO SIGNAL REPRODUCER 失效
公开(公告)号：JPS58111492A
公开(公告)日：1983-07-02
申请号：JP21547981
申请日：1981-12-24
申请人： CANON KK
发明人： TAKIMOTO HIROYUKI
IPC分类号： H04N5/783 , G11B20/02 , H04N5/93
摘要： PURPOSE:To obtain an excellent still video, by stopping recording media when a delayed vertical synchronizing signal and dropout are coincident with each other. CONSTITUTION:A reproduced video signal (a) without dropout from a terminal 1 is inputted to Synchless circuit 3. Then, a horizontal synchronizing signal is picked up and since no horizontal synchronizing signal exists in the dropout part, the dropout part is detected. Further, this signal (a) is inputted to a vertical synchronizing separation circuit 5 and a vertical synchronizing signal (c) is picked up. The output of a delay circuit 6 is inverted after a prescribed time when the signal (c) is inputted. When the output (d) of the circuit 6 is inverted, a capstant stop signal is generated from a capstan stop signal generator 4 with the output (b) of the circuit 3. The inversion of the output of the circuit 6 where the said prescribed time is determined suitably is given to the next vertical blanking period. Thus, after the generation of the capstan stop signal, dropout is given to the vertical blanking period, and excellent still reproduction is obtained.

89. 发明专利

JPS5897169A RECORDER 失效
公开(公告)号：JPS5897169A
公开(公告)日：1983-06-09
申请号：JP19418681
申请日：1981-12-02
申请人： CANON KK
发明人： TOBE KAZUMITSU , TAKIMOTO HIROYUKI , NAKAZAWA TOSHIHIKO
IPC分类号： H04N5/7826 , G11B5/008 , G11B5/024 , G11B15/12 , G11B27/029 , G11B27/036
摘要： PURPOSE:To eliminate a duplicated part or a non-recording part at joint of editing sections for video and audio tracks, by bringing a video information erasing means and an audio information erasing means in different timing respectively into operating or nonoperating state. CONSTITUTION:An audio signal is superimposed on a bias from an oscillation circuit 14, an SW15 is closed with an output of a switching circuit 17 through the set-on of an edition start switch SW16, and a current flows to an erasing head 2. An output of the circuit 17 is delayed 18 for a time corresponding to v/l to close an SW13 and to set on a recording/reproduction head 3. At the end of edition, the SW16 is set off, and a current to the head 2 is interrupted with an edition end signal from the circuit 17. Further, the end signal is delayed 17 for v/l to turn off the recording current to the head 3. Thus, a duplicated part where a part already recorded and an inserted part are overlapped at the beginning of edition and a non-recording part at the end of edition can not be produced, allowing to perform excellent edition.

90. 发明专利

JPS5889086A CONTROLLING METHOD FOR ROTATING PHASE 失效
公开(公告)号：JPS5889086A
公开(公告)日：1983-05-27
申请号：JP18817181
申请日：1981-11-24
申请人： CANON KK
发明人： TAKIMOTO HIROYUKI
IPC分类号： H02P29/00 , H02P5/52
摘要： PURPOSE:To always record a vertical synchronization signal at the prescribed position of a magnetic tape by rotating a rotor always at the prescribed relationship with a control signal when controlling the rotor by forming a signal having a gradient part and employing a delay circuit. CONSTITUTION:The output of a vertical synchronization separating circuit 14 is supplied to a bootstrap circuit 22 at the recording time, a CTL signal is supplied from a CTL head 5 to the bootstrap circuit 22 at the reproducing time. On the other hand, a PG pulse from a PG head is sampled by a pulse amplifier 23, is shaped, and is inputted to a delay circuit 16. The pulse signal delayed by the delay circuit 16 is sampled by the delayed pulse signal, and is held. The rotation of a drum driving motor 8 is controlled by the output of a sample-holding circuit 17, and the delay time of the delay circuit 16 is controlled.

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