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51. 发明专利

JPH03153185A PICTURE SIGNAL RECORDING REPRODUCING SYSTEM 失效
公开(公告)号：JPH03153185A
公开(公告)日：1991-07-01
申请号：JP29129489
申请日：1989-11-10
申请人： CANON KK
发明人： FUJIMOTO MAKOTO
IPC分类号： H04N5/91 , H04N5/92 , H04N5/922
摘要： PURPOSE:To record and reproduce a picture signal with high definition stably onto a recording medium stably without deterioration and without need of complicated adjustment by providing a frequency amplitude characteristic optimizing means optimizing a frequency amplitude characteristic to a sampling picture signal whose group delay characteristic is optimized with a group delay characteristic optimizing means. CONSTITUTION:A group delay elimination circuit 2512 is provided with some kinds of group delay distortion characteristic correction filters correcting the dispersion in the characteristic of the electromagnetic conversion system and one of plural kinds of group delay distortion characteristic correction filters is selected to optimize the group delay characteristic of a reproduced luminance signal. An FIR filter equalizer 2511 detects how much a waveform of an HIT or a VIT pulse waveform added in a digital luminance signal outputted from an A/D converter 2510 is deviated from original waveform based on the least square method and a tap coefficient of the FIR(Finite impulse response) digital filter in the inside is controlled so as to minimize the error in response to the error to be detected so as to optimize the amplitude characteristic and the result is fed to a picture memory 2540.

52. 发明专利

JPH02186780A PICTURE SIGNAL REGENERATING DEVICE 失效
公开(公告)号：JPH02186780A
公开(公告)日：1990-07-23
申请号：JP471189
申请日：1989-01-13
申请人： CANON KK
发明人： FUJIMOTO MAKOTO
IPC分类号： H04N5/91 , H04N5/93 , H04N7/00 , H04N7/01 , H04N7/015
摘要： PURPOSE:To enable monitor display even during regenerating operation by interpolation-processing a regenerated picture signal outputted successively from each track of a recording medium, and outputting and displaying an information signal complying with the progress of interpolation after multiplexing it. CONSTITUTION:The successive regenerated output from each track of a disk 1501 is written in a picture memory 1515 after passing through A/D converters 1513, 1514 through a preamplifier 1503 and a still video regeneration process circuit 1504, etc. This written data is interpolation-processed by a picture processing circuit 1516, and is optimized, and simultaneously, a regular picture complying with the progress of the interpolation from a character generation circuit 1536 is synthesized together with the information signal such as 'This is not a final picture.', etc., and is stored in the memory 1515, and is outputted, and the regenerated picture can be quickly confirmed by monitor-displaying it while it is regenerated.

53. 发明专利

JPH02177792A IMAGE SIGNAL RECORDING OR REPRODUCING DEVICE 失效
公开(公告)号：JPH02177792A
公开(公告)日：1990-07-10
申请号：JP32941788
申请日：1988-12-28
申请人： CANON KK
发明人： OGURA TOKIHIKO , SASAKURA TAKAO , OHASHI KAZUHITO , FUJIMOTO MAKOTO
IPC分类号： H04N9/79
摘要： PURPOSE:To record and reproduce an image signal with high definition by recording a pilot signal with a frequency near to the frequancy band of a frequency-modulated color information signal less than the frequency of an ordinary preset value in the case of recording the image signal with the large amount of high frequency component. CONSTITUTION:When a signal read out from a CCD 3 includes a frequency component >=6MHz exceeding a prescribed level, the pilot signal fT2 of 160fH is added, and when it does not include the frequency component >=6MHz exceeding the prescribed level, the pilot signal fT1 of 195fH is added. And it is recorded on a video floppy 16 with the image signal, and the pilot signal fT having the same jitter component as that of a reproducing image signal is separated at a BPF 28 or 34. Then, a clock pulse with a frequency of 780fH is generated, and a phase is adjusted to accurately perform the re-sampling a Y signal, an (R-Y) signal, and a (B-Y) signal reproduced setting a reference pulse inserted and recorded in the vertical flyback period of the image signal at the time of performing recording as phase reference by a phase shifter 41.

54. 发明专利

JPH02166666A IMAGE SIGNAL REGENERATING DEVICE 失效
公开(公告)号：JPH02166666A
公开(公告)日：1990-06-27
申请号：JP31964088
申请日：1988-12-20
申请人： CANON KK
发明人： OGURA TOKIHIKO , OHASHI KAZUHITO , SASAKURA TAKAO , FUJIMOTO MAKOTO
IPC分类号： H04N5/95 , G11B20/02 , G11B20/06
摘要： PURPOSE:To enable the high accurate correction of a time base variation by controlling a storage operation using either a 1st storage control signal according to the level of a 2nd pilot signal outputted from a regenerating means or a 3rd storage control signal formed from 1st and 2nd storage control signals. CONSTITUTION:When a detecting signal P of the 2nd pilot signal fT' in a detecting circuit 38 becomes smaller or larger than values in a prescribed range, a control signal R is set at a high level by a system controller 46, and the level of an error signal outputted from a phase comparator 36 is fixed by a holding circuit 40 to fix the oscillating frequency of a voltage control oscillator 41 at constant. Then, in a horizontal line where the phase of the 2nd pilot signal fT' is disturbed, a sample clock signal synchronized approximately in phase by a 1st pilot signal 13fH is outputted from a multiplier 42. Then, when the signal fT' is normal, a high accurate PLL control is performed by the signal fT' and the signal 13fH to make the multiplier 42 output the ample clock signal capable of following even in the jitters of a high frequency. By this method, the high accurate correction of time base variations can be carried out.

55. 发明专利

JPH02152378A JOINT METHOD FOR SOLID-STATE IMAGE PICKUP DEVICE 失效
公开(公告)号：JPH02152378A
公开(公告)日：1990-06-12
申请号：JP30615888
申请日：1988-12-05
申请人： CANON KK
发明人： FUJIMOTO MAKOTO
IPC分类号： H01L27/14 , H04N5/335 , H04N5/349 , H04N5/372 , H05K1/18
摘要： PURPOSE:To prolong the heating and cooling time of solder and to execute the correction of a fine position by providing a notched part between the solder adhering part and element fitting part of a solid-state image pickup element supporting board and lowering the rate of heat conduction to an element. CONSTITUTION:Four notched parts 5b are provided between a window opening 5a for solid-state image pickup element (CCD) and a cream solder part 4 on a CCD fitting board 5A. Thus, a thermal influence to the CCD is decreased when the solder part 4 is heated and cooled by a solder iron. Thus, when the solder is set, the solder is cooled comparatively slowly and during the cooling, the fine correction of position dislocation is executed.

56. 发明专利

JPH01103032A SIGNAL PROCESSOR 失效
公开(公告)号：JPH01103032A
公开(公告)日：1989-04-20
申请号：JP25973787
申请日：1987-10-16
申请人： CANON KK
发明人： FUJIMOTO MAKOTO
IPC分类号： H04N5/922 , G11B20/06 , H04B1/62 , H04N5/92
摘要： PURPOSE:To restore an original signal from an input signal without being accompanied with the deterioration of the signal by detecting the magnitude of a level prescribing signal and controlling a suppression characteristic of suppressing means for suppressing a high frequency component, based on its value. CONSTITUTION:A synchronizing separator circuit 103 separates a horizontal signal from an output signal of a de-emphasis circuit 102. A gate pulse generator 104 generates a gate pulse, based on a synchronizing signal which has been separated by the synchronizing separator circuit 103. A gate circuit 105 draws out a fall part of a horizontal synchronizing signal from the output signal of the de-emphasis circuit 102 by the gate pulse from the gate pulse generating circuit 104. This signal passes through a high-pass filter 106, clamped, based on the signal which is delayed by a delaying circuit 110, in a clamping 107, held by a holding circuit 108, and compared with a reference voltage by a comparator 109. The output of the comparator 109 is inputted to a difference voltage signal input terminal of the de-emphasis circuit 102.

57. 发明专利

JPH01102721A PERPENDICULAR MAGNETIC RECORDING MEDIUM 失效
公开(公告)号：JPH01102721A
公开(公告)日：1989-04-20
申请号：JP25820787
申请日：1987-10-15
申请人： CANON KK
发明人： FUJIMOTO MAKOTO , ARISAKA KATSUMI , SASAKURA TAKAO , TAKAGI HIROTSUGU , SUZUKI KENJI , NIIMI AKIRA
IPC分类号： G11B5/66 , G11B5/64 , G11B5/667 , G11B5/73 , G11B5/735
摘要： PURPOSE:To obtain good head touch by forming a thin film layer having a tensile stress on the 2nd face of a magnetic recording medium formed with an alloy film essentially consisting of Co-Cr on the 1st face of a nonmagnetic base body when the coefft. of thermal expansion of the nonmagnetic base body is smaller than the coefft. of thermal expansion of the alloy film essentially consisting of the Co-Cr. CONSTITUTION:The curling generated in the magnetic recording medium is offset by forming the film 3 having the absolute value of the tensile stress about equal to or larger than the tensile stress of the Co-Cr alloy 2, for example, by forming an inexpensive metal, etc., as a thin film on the opposite side. The recording medium is, therefore, formed thinner as a whole as compared to the dummy formed with the Co-Cr alloys on both faces. The perpendicular magnetic recording medium which is decreased in the rigidity of the medium and has the good head touch is thereby obtd. at the low cost.

58. 发明专利

JPS6476460A SIGNAL PROCESSOR 失效
公开(公告)号：JPS6476460A
公开(公告)日：1989-03-22
申请号：JP23317387
申请日：1987-09-16
申请人： CANON KK
发明人： FUJIMOTO MAKOTO , MIMURA TOSHIHIKO
IPC分类号： H04N5/922 , G11B20/06 , H04N5/92
摘要： PURPOSE:To decrease a noise component by separating a first frequency component to be attenuated with prescribed quantity and a second frequency component to be different from the frequency, adding the first and second frequency components and amplifying a third frequency component to this signal. CONSTITUTION:For an input luminance signal, a low frequency component is extracted in an LPF100a and the signal is outputted to the + terminal of an adder 100b. On the other hand, the luminance signal is multiplied by a coefficient multiplying circuit 100c and the whole level of the signal is suppressed. Then, a high frequency component is extracted by an HPF100d. After that, the signal is supplied to a non-linear converting circuit 100e and a signal to be smaller than a prescribed amplitude is outputted as it is. Then, a signal to be larger than the prescribed amplitude is successively suppressed and supplied to the + terminal of the adder 100b. Thus, since the adder is composed of the low frequency component from the LPF and the high frequency component to be non-linear conversion-processed from the circuit 100e and these components are added, the signal, whose high frequency component is suppressed with the prescribed quantity, is outputted. Further, by loading emphasis to this output, the noise component can be decreased.

59. 发明专利

JPS6460076A INFORMATION SIGNAL REPRODUCING DEVICE 失效
公开(公告)号：JPS6460076A
公开(公告)日：1989-03-07
申请号：JP21515587
申请日：1987-08-31
申请人： CANON KK
发明人： FUJIMOTO MAKOTO
IPC分类号： G11B20/02 , H04N5/76 , H04N5/93
摘要： PURPOSE:To execute an optimum noise reducing processing without an excessive deficiency to respective reproduced track positions at the time of reproducing information on a disk form recording medium by continuously controlling the quantity of noise reduction based on track position information. CONSTITUTION:A noise reducing means 120 for reducing a noise component to a reproduced information signal, a detecting means 117 for detecting the reproduced track position at the time of a reproduction, and an adjusting means 124 for continuously adjusting the quantity of the noise reproduction of the noise reducing means 120 based on the reproduced track position information detected by the detecting means 117 are provided. Thereby, the optimum noise reducing processing can be applied to a reproduced information signal obtained from the respective reproduced tracks and the noise reducing processing can be applied to a limit in which a distortion due to the noise reproducing processing is not visually seen.

60. 发明专利

JPS63292869A IMAGE READER 失效
公开(公告)号：JPS63292869A
公开(公告)日：1988-11-30
申请号：JP12718387
申请日：1987-05-26
申请人： CANON KK
发明人： FUJIMOTO MAKOTO , IMAMICHI KAZUYUKI
IPC分类号： H04N1/04
摘要： PURPOSE:To simplify assembling adjustment and to lower a price without making a device into a large size, by performing the reading of an original image by image-forming plural image light color-sep arated by plural color separation means which color-separate incident light from an original surface to different wavelength areas on the same read sensor separately. CONSTITUTION:The image light on the prescribed area of an original 1, only whose red component being transmitted by a read color filter 2, is image-formed on the light receiving area 4a of an image sensor by an image forming lens 3. And the above stated image light, after whose light quantity being corrected so as to be set at a reference value by an ND filter 5, is image-formed on the prescribed area 4b of the same image sensor 4 by an image forming lens 6. Thus, the image light transmitting the color filter 2 and the ND filter 5 is received by the light receiving areas 4a and 4b of the same image sensor 4, and outputted signals are sent to a control means such as a CPU, etc., then, compared and computed. In such a way, it is possible to omit the image sensor, and to prevent the increase of cost without making the device into the large size.

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