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41. 发明专利

JPH08265802A SIGNAL COMPRESSOR AND SIGNAL EXPANDER 失效
公开(公告)号：JPH08265802A
公开(公告)日：1996-10-11
申请号：JP6570495
申请日：1995-03-24
申请人： CANON KK
发明人： SASAKURA TAKAO
IPC分类号： G03B35/08 , G03B35/18 , G06T9/00 , H03M7/30 , H04N13/02 , H04N19/102 , H04N19/132 , H04N19/167 , H04N19/423 , H04N19/59 , H04N19/597 , H04N19/60 , H04N19/70 , H04N19/85 , H04N7/30
摘要： PURPOSE: To obtain a video signal by compressing left/right video signals to obtain a stereoscopic image without missing. CONSTITUTION: A right eye signal and a left eye signal are subject to time base compression by time base compression 23R, 23L respectively. The left/right both ends within 1H of each signal are compressed by A/D converters 201R, 201L and memories 202R, 202L at a high compression rate and the middle part is compressed at a lower compression rate by A/D converters 27R,27L and memories 28R, 28L. Two compression signals are arranged in front and in rear position within 1H by an adder 24 and a reference pulse is inserted between the two signals and the result is outputted as a compressed video signal. A control section 20 provides clocks fc, 2fc, 4fc to each A/D converter and each memory and provides write/read timing pulses WE1, WE2, and OE1-OE4.

42. 发明专利

JPH08168056A DEVICE AND METHOD FOR IMAGE RECORDING AND REPRODUCTION 失效
公开(公告)号：JPH08168056A
公开(公告)日：1996-06-25
申请号：JP33318094
申请日：1994-12-14
申请人： CANON KK
发明人： SASAKURA TAKAO
IPC分类号： G06F5/00 , H04N5/92 , H04N13/00
摘要： PURPOSE: To provide an image recording and reproducing device which can obtain picture quality having no color slurring even when an LCD panel with a delta array of RGB is used. CONSTITUTION: The image recording and reproducing device consists of a compound eye camera 1, a mixing circuit 2, a recording and reproducing device 3, a separating circuit 4, and a stereoscopic display device 5. A video signal which is compressed by the mixing circuit 2 is sampled with a clock of frequency fc, and written in memories 13b and 13e and read out at frequency 2fc. The sampling clock consists of clocks 1A and 2A synchronized with the video signal by a PLL circuit 12 and a clock delayed nearly by a 1/2 pixel through a delay circuit 15, and is switched every horizontal scanning period of the video signal. The video signal which is reproduced from a VCR 3 and has its time base expanded by the separating circuit 4 is sampled at a specific frequency and written in the memories reversely to the compression of the time base, and then read out at the frequency fc. The sampling clock is switched every horizontal scanning period of the video signal similarly to the mixing time.

43. 发明专利

JPH06197298A STILL PICTURE SIGNAL RECORDING AND REPRODUCING DEVICE 失效
公开(公告)号：JPH06197298A
公开(公告)日：1994-07-15
申请号：JP35723192
申请日：1992-12-24
申请人： CANON KK
发明人： SASAKURA TAKAO
IPC分类号： H04N5/91 , H04N5/765 , H04N5/781
摘要： PURPOSE:To considerably reduce a time from an end of exposure till the read of a signal by using a 2-channel frame head when a still picture is recorded or reproduced to/from a recording medium and reading/recording data of an image pickup element asynchronously with a position reference signal of the medium. CONSTITUTION:An image pickup section 1 is made up of an optical system comprising lenses (not shown) and image pickup systems 1a, 1b comprising a shutter and image pickup elements. A still video recording signal processing section 2 is connected to the image pickup system 1a and a similar processing section 3 is connected to the image pickup system 1b. Furthermore, a magnetic head 7a is connected to the processing section 2 via an amplifier (not shown) and a magnetic head 7b is connected to the processing section 3 and they are arranged to one side of a magnetic recording medium 6 opposite to or adjacent to each other. Each circuit section and the medium 6 are driven by using a stepping motor (not shown) connected to a system controller 5 and the image pickup systems 1a, 1b are activated by a drive pulse from a synchronizing signal generating circuit IC 4 connecting to the controller 5.

44. 发明专利

JPH04347976A IMAGE PICKUP DEVICE 失效
公开(公告)号：JPH04347976A
公开(公告)日：1992-12-03
申请号：JP112891
申请日：1991-01-09
申请人： CANON KK
发明人： SASAKURA TAKAO
IPC分类号： H04N5/225 , H04N5/232
摘要： PURPOSE:To provide a small image pickup device with a good operability capable of inputting data from outside and outputting data to outside without necessitating the mounting of the input/output terminals separately. CONSTITUTION:In the image pickup device in which a camera main body 3 and a lens part 1 are composed in freely attachably and detachably, the camera main body 3 is provided with second electrical contact group 8a, 8b to perform the communication of the signal with the lens part 1 in contact with a first electrical contact group 4a, 4b provided on the lens part 1 in the state that the lens part 1 is fitted to the camera part 3. The second electrical contact group 8a, 8b are made to be used as the electrical contact group for the communication of the information signal with the outside of the camera main body 3 in the state that the lens part 1 is not fitted.

45. 发明专利

JPH0454781A PICTURE SIGNAL RECORDING AND REPRODUCING SYSTEM 失效
公开(公告)号：JPH0454781A
公开(公告)日：1992-02-21
申请号：JP16490390
申请日：1990-06-22
申请人： CANON KK
发明人： SASAKURA TAKAO , FUJIMOTO MAKOTO , OGURA TOKIHIKO , OHASHI KAZUHITO
IPC分类号： H04N5/76 , H04N5/91
摘要： PURPOSE:To easily discriminate a sampling picture signal at reproduction by adding any of signals representing a recording form, a field number of the picture signal and a picture number of the picture signal to the sampling picture signal. CONSTITUTION:In the case of recording a picture signal onto a video floppy, information relating to a picture to be recorded, that is, information such as field/frame, track number, year/month/day is encoded and an ID signal formed by applying DPSK modulation to the code is added to a relevant picture signal and the resulting signal is recorded. A user area to add a code set optionally by the user is provided for the ID signal. The reproducing system can discriminate a picture signal as to whether it is a picture signal recorded by a conventional system or a picture signal recorded by a CHSV system by adding an ID signal whose field/frame code is assigned with a code pattern '1,1' to the picture signal recorded by the CHSV system.

46. 发明专利

JPH0454780A PICTURE SIGNAL RECORDING AND REPRODUCING SYSTEM 失效
公开(公告)号：JPH0454780A
公开(公告)日：1992-02-21
申请号：JP16490290
申请日：1990-06-22
申请人： CANON KK
发明人： OGURA TOKIHIKO , SASAKURA TAKAO , OHASHI KAZUHITO , FUJIMOTO MAKOTO
IPC分类号： H04N5/91
摘要： PURPOSE:To record information representing a kind of a picture signal without recording of a new information signal by varying a phase of a reference pilot signal recorded on a recording medium together with the picture signal for part of a period in response to the kind of the picture signal to be recorded. CONSTITUTION:A pilot signal fp generated from a synchronizing signal generator 5 and a horizontal synchronizing signal H-SYNC are fed to a pi/2 phase shifter 11, and each of pilot signals whose phase is shifted by pi/2 each in response to the kind of the picture signal outputted from the phase shifter 11 is fed to a switch S. Then the pilot signal outputted from the switch S is fed to a gate circuit 12, the gate circuit 12 passes its input signal for a horizontal and a vertical blanking period according to a composite blanking signal C-BLK fed from the generator 5 and applies each pilot signal to an adder 9 for the period, in which frequency multiplex is implemented for the horizontal and vertical blanking periods of an FM modulation picture element information signal fed from a recording signal processing circuit 10 and the result is fed to a recording amplifier 13. Then the signal outputted from the adder 9 is amplified by the recording amplifier 13 and recorded on a video floppy 15.

47. 发明专利

JPH03256493A PICTURE SIGNAL RECORDING AND REPRODUCING SYSTEM 失效
公开(公告)号：JPH03256493A
公开(公告)日：1991-11-15
申请号：JP5352390
申请日：1990-03-07
申请人： CANON KK
发明人： SASAKURA TAKAO
IPC分类号： H04N9/83
摘要： PURPOSE:To simplify configuration by forming interpolating picture signals by sampling and holding stored sampling picture signals. CONSTITUTION:Sample and hold (S/H) circuits 219 and 220 execute sample and hold each time the effective sample value data of CR and CB signals to be supplied from a picture memory 215 are inputted. Then, the sampled and held data are supplied to D/A converters 222 and 223. Thus, since the interpolating picture signals are formed by sampling and holding the stored sampling picture signals, the configuration can be simplified and further, the picture signals can stably be recorded and reproduced without being degraded.

48. 发明专利

JPH03256479A PICTURE SIGNAL RECORDING AND REPRODUCING SYSTEM 失效
公开(公告)号：JPH03256479A
公开(公告)日：1991-11-15
申请号：JP5352590
申请日：1990-03-07
申请人： CANON KK
发明人： SASAKURA TAKAO
IPC分类号： H04N5/91 , H04N5/95 , H04N5/956
摘要： PURPOSE:To reproduce a picture signal without being affected by the fluctuation of a time base and degrading the picture signal by correcting the write address of a sampling picture signal in one part corresponding to the write address of a sampling picture signal in the other part to be stored into a picture memory. CONSTITUTION:A picture signal reproducing device is composed of a line memory 1, write address generator 2, phase reference signal detecting circuits 3 and 6, address memory 4, subtracter 5, picture memory 7, picture processing circuit 8, and read address generator 9. In such the case, corresponding to the write address of the write address of the sampling picture signal in one part to be stored into the picture memory 7 which stores the sampling picture signal to be reproduced from a recording medium, the write address of the sampling picture signal in the other part is corrected. Thus, the picture signal can be reproduced without being affected by the time base fluctuation, which is generated in the picture signal to be reproduced from the recording medium, and degrading the picture signal.

49. 发明专利

JPH03256476A PICTURE SIGNAL RECORDING AND REPRODUCING DEVICE 失效
公开(公告)号：JPH03256476A
公开(公告)日：1991-11-15
申请号：JP5351190
申请日：1990-03-07
申请人： CANON KK
发明人： SASAKURA TAKAO
IPC分类号： H04N5/765 , H04N5/16 , H04N5/335 , H04N5/357 , H04N5/369 , H04N5/378 , H04N5/91 , H04N5/93
摘要： PURPOSE:To output a picture signal not to generate carrier leak by subtracting a signal corresponding to an optical black part, which is provided at an image pickup element, from the other signal in the storing operation of a picture memory on a reproducing side. CONSTITUTION:A correcting circuit 4 subtracts the signal corresponding to the optical black part, out of digital picture signals read out from a picture memory 3, from the other signal digitally and therefore, the level fluctuation of the picture signal caused by a clamp processing on a recording side is digitally corrected. Then, the corrected digital picture signals are reloaded with digital picture signals stored in the picture memory 3. A memory control circuit 7 successively reads out the level-corrected digital picture signals stored in the picture memory 3, and those picture signals are converted to analog picture signals and afterwards outputted from an output terminal 6. Thus, the carrier leak to be generated at an image pickup part and the picture signal not to generate the carrier leak can be outputted.

50. 发明专利

JPH0312855A RECORDING OR REPRODUCING DEVICE 失效
公开(公告)号：JPH0312855A
公开(公告)日：1991-01-21
申请号：JP14799789
申请日：1989-06-09
申请人： CANON KK
发明人： SASAKURA TAKAO
IPC分类号： G11B17/32 , G11B17/34
摘要： PURPOSE:To stably hold spacing between magnetic heads and a magnetic disk by providing head units by setting them to confront each other with a recording medium being intervened and specifying the position relation of respective head units. CONSTITUTION:The position relation of an upper-side stable member 7 and a lower-side stable member 8 is set in such a way that the magnetic head 6 of the lowr-side stable member 8 is confronted with the recessed groove 7a of the upper-side stable member 7 and the magnetic head 5 of the upper-side stable mamber 7 with the recessed groove 8a of the lower-side stable member 8. The positions of two magnetic head cores 5 and 6 above and below the magnetic disk in the direction of the radius of the disk are set so that same track is traced on the right side and the reverse side on the magnetic disk. Consequently, air films are formed on both sides of the magnetic disk by the pads 7b and 8b of the stable members 7 and 8. Thus, the contact state with the magnetic disk can always be kept stable.

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