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21. 发明专利

JPH01172859A ELECTROPHOTOGRAPHIC DEVICE 失效
公开(公告)号：JPH01172859A
公开(公告)日：1989-07-07
申请号：JP33155987
申请日：1987-12-26
申请人： CANON KK
发明人： FUJIMOTO MAKOTO
IPC分类号： G03G15/01 , G03G15/04 , G03G15/043 , G03G15/047
摘要： PURPOSE:To improve picture quality without using a high-definition digital exposing means nor a read means and to recognize colors in a document by one image sensor by performing image formation by an analog exposing means and utilizing the digital exposing means for erasing light. CONSTITUTION:The read means 6 recognizes a specific color area in the document 1 which is separated by a color separating means 20 and has the peak of spectral reflectance in a specific wavelength range. Then when the image of the specific area in the document 1 is formed, the nonspecific color or black area of the electrostatic latent image of the document 1 which is formed by the analog exposing means A is erased by the exposure of the digital exposing means D according to the recognition signal. When the image of the nonspecific color area in the document 1 is formed, on the other hand, the parts other than the specific color or black area of the electrostatic latent image of the document 1 is formed by the erasure exposure of the digital exposing means. Consequently, an image of high picture quality is obtained without using any high-definition reading means nor digital exposing means, the reading means need not have high definition, and only one image sensor is required.

22. 发明专利

JPH01103031A SIGNAL TRANSMISSION EQUIPMENT 失效
公开(公告)号：JPH01103031A
公开(公告)日：1989-04-20
申请号：JP25973687
申请日：1987-10-16
申请人： CANON KK
发明人： FUJIMOTO MAKOTO
IPC分类号： H04B1/62 , G11B20/06 , H04N5/92 , H04N5/922
摘要： PURPOSE:To transmit a signal without deteriorating it by transmitting the signal by compressing a part exceeding a prescribed DC potential and expanding the signal so as to return only the compressed part by a receiving side. CONSTITUTION:An input signal is brought to high frequency emphasis by an emphasis circuit 101. This signal is inputted to a compressing circuit 102, a part exceeding a prescribed level is compressed, and other part is allowed to pass through as it is. This signal is inputted to an FM modulator 103, amplified by a recording amplifier, applied to a head 105 and recorded in a medium 106. The signal which is recorded in the recording medium 106 passes through the head 105 and a transformer 110 and amplified by a pre-amplifier 111, and thereafter, demodulated by an FM demodulator 112. Subsequently, the part which is compressed is expanded by an expanding circuit 113 and returned to the original signal. This signal is brought to de-emphasis by a de-emphasis circuit 114 and reproduced as a video signal.

23. 发明专利

JPH0196622A SCANNING OPTICAL DEVICE 失效
公开(公告)号：JPH0196622A
公开(公告)日：1989-04-14
申请号：JP25241187
申请日：1987-10-08
申请人： CANON KK
发明人： FUJIMOTO MAKOTO
IPC分类号： H04N1/23 , B41J2/44 , G02B26/10 , G02B26/12 , G03G15/04 , H04N1/04 , H04N1/113
摘要： PURPOSE:To prevent the subscanning direction of a scanning beam from deviating by displacing either of a lens which collimates a light beam into parallel light and a lens which converges a light beam in the direction of subscanning on a surface to be scanned. CONSTITUTION:A beam position in a direction (subscanning direction) perpendicular to a main scanning direction on the surface 7 to be scanned nearby a position equivalent to the surface of a photosensitive drum as the surface 7 to be scanned is detected. Namely, a position sensor 8 is arranged which generates a deviation signal as the quantity D of a shift in set position, a displacement member 9 is put in operation with this deviation signal, and the collimator lens 2 is displaced on the surface 7 to be scanned in the direction where deviation in the subscanning direction is eliminated, thereby correcting the scanning deviation. Simultaneously, the signal of the position sensor 8 is used to detect the scanning start end of scanning line, thereby synchronizing an image signal. Consequently, the deviation of the scanning beam on the surface 7 to be scanned in the subscanning direction is securely corrected.

24. 发明专利

JPS6489003A REPRODUCING DEVICE 失效
公开(公告)号：JPS6489003A
公开(公告)日：1989-04-03
申请号：JP24629687
申请日：1987-09-30
申请人： CANON KK
发明人： FUJIMOTO MAKOTO
IPC分类号： G11B5/027 , G11B20/02 , G11B20/06
摘要： PURPOSE:To improve an accuracy by converting a signal reproduced by means of a reproducing means to a digital signal and, thereafter, correcting the non- linearity of the reproducing means. CONSTITUTION:After a demodulated signal is A/C-converted, when a distortion is corrected by a table conversion in utilizing a linearity correction ROM 411, etc., having a table corresponding to a converting characteristic, an arbitrary correction can be executed. A corrected signal is encoded, by a digital processing circuit 405, in being matched with an NTSC system in the form of the digital signal, and the signal is converted to an analog signal. In such a way, without increasing adjustment items, after a demodulating wave with a high performance is stably obtained by a circuit to be conventionally used, the A/D conversion is executed, and thereafter, a linearity is corrected. Thus, adjustment points can be decreased, and the accuracy can be improved.

25. 发明专利

JPS63271367A IMAGE FORMING DEVICE 失效
公开(公告)号：JPS63271367A
公开(公告)日：1988-11-09
申请号：JP10709987
申请日：1987-04-30
申请人： CANON KK
发明人： FUJIMOTO MAKOTO , OGAWA HIROSHI
IPC分类号： G03G15/01
摘要： PURPOSE:To compensate the color sensitivity of a multiple color original to improve the operatability of the titled device by allowing a switching driving means to arrange a filter for compensating the color sensitivity of color information recognized by a recognizing means on an image carrier in an exposure optical path. CONSTITUTION:The image forming device capable of forming color images corresponding to colors in a multiple color original on an image carrier 11 is provided with the recognizing means 8 for recognizing the color information of the multiple color original 2 and the filter 10 for compensating the color sensitivity of the color information recognized by the means 8 on the image carrier 11 can be arranged in the exposure optical path by the switching driving means. When an output signal from a 2-line image sensor 8 is outputted to a solenoid driving circuit 30 for instance, a solenoid 32 to be a switching means is driven to switch the filter 10. Consequently, the color sensitivity of the color part of the multiple color original can be automatically improved and the operatability can be sharply improved.

26. 发明专利

JPS63249969A MAGNETIC RECORDING AND REPRODUCING DEVICE 失效
公开(公告)号：JPS63249969A
公开(公告)日：1988-10-17
申请号：JP8382887
申请日：1987-04-07
申请人： CANON KK
发明人： FUJIMOTO MAKOTO
IPC分类号： G11B17/34
摘要： PURPOSE:To obtain good head touch at all times by controlling a pad moving means based on the output of an envelope detection means. CONSTITUTION:The position of a pad 11 is controlled via a stepping motor 23 based on the envelope of the signal reproduced via a magnetic head 14. In the period while the relative speed of a magnetic recording medium 12 and the magnetic head 14 is low, the pad 11 is separated from the magnetic recording medium 12 to reduce the pressure welding force between the former and latter. Namely the pad position is controlled so that the envelope of the reproducing signal of the magnetic head 14 become larger and the positional control of the pad 11 is effected whenever the track position is changed, hence the head touch varies by the position on the radius of the magnetic recording medium 12 and there is no problem of deteriorating the recording and reproducing characteristics.

27. 发明专利

JPS63208388A METHOD AND APPARATUS FOR TRANSMISSION 失效
公开(公告)号：JPS63208388A
公开(公告)日：1988-08-29
申请号：JP4186487
申请日：1987-02-24
申请人： CANON KK
发明人： FUJIMOTO MAKOTO
IPC分类号： H04N11/00 , H04N9/83 , H04N11/06 , H04N11/24
摘要： PURPOSE:To send much information without expanding the band by separating one of a luminance signal or a chrominance signal into two bands and converting/modulating and transmitting them while being subject to frequency interleaving. CONSTITUTION:An image formed by a lens 101 is converted into an electric signal by a solid-state image pickup element 102 and outputted as y, R-y, B-y signals. The signal (y) is divided into the (y) signal of 4-4.5MHz and a high frequency component having a frequency more than the said frequency by LPF 104, BPF 105. The phase of the high frequency component is converted into on interleaved signal and also the (y) signal by using a fSC/2 inverted by the field sent from a synchronizing signal generator 124, and the result is inputted to an adder 107. The output of the LPF 113 is modulated, the output of an ID signal generator 117 is inputted to the adder 116. The three signals are subject to frequency multiplex and recoded magnetically on a magnetic medium 120 by a head 119 at a recording amplifier 118.

28. 发明专利

JPS63144675A VIDEO SIGNAL PROCESSOR 失效
公开(公告)号：JPS63144675A
公开(公告)日：1988-06-16
申请号：JP29149586
申请日：1986-12-09
申请人： CANON KK
发明人： FUJIMOTO MAKOTO
IPC分类号： H04N5/21 , G11B20/02 , H04N5/765 , H04N5/781 , H04N5/93
摘要： PURPOSE:To improve S/N and to prevent the degrading of resolution by executing noise elimination processing separately for a high-definition information signal and other general information signals. CONSTITUTION:High-definition information is azimuth recording in the guard band part of a video floppy disk 401 independently of general information. A noise limiter is a circuit that regards signals lower than a certain level as noises and eliminates them; the limit signal level comes smaller as the frequency goes higher, hence if the elimination level of noise is set at a high level, high frequency components also are eliminated; complete noise elimination is not necessary to be achieved for high frequency domain because high frequency noises are not much noticeable. Therefore, the noise elimination level of a noise limiter 418 general information is set high in executing the noise elimination, but with a noise limiter 419 for high-definition information, the level is set low or at zero. In such a way, intermediate frequency noises are cut off, the overall S/N of a signal is remarkably improved, and in the higher band, the noise elimination is mitigated, and thus a high-definition image can be obtained.

29. 发明专利

JPS63144673A IMAGE INFORMATION RECORDER 失效
公开(公告)号：JPS63144673A
公开(公告)日：1988-06-16
申请号：JP29149686
申请日：1986-12-09
申请人： CANON KK
发明人： FUJIMOTO MAKOTO
IPC分类号： H04N5/92 , G11B5/027 , G11B20/02
摘要： PURPOSE:To record high-definition video signals in a disk with interchangeability with still picture video specification by recording the lower frequency components of a video signal in the recording track of a recording medium, and recording the higher frequency components in a guard band part by means of azimuth recording. CONSTITUTION:A 6MHz luminance signal is frequency-divided at the boundary of 4MHz in a frequency division circuit 601. Thus divided high-definition information signal of 4-6MHz is converted to a low frequency signal of approximately 0-2MHz in a low-frequency conversion circuit 602 by using a signal of 3.58MHz or others supplied from a local oscillator 603. This signal is subjected to a suitable emphasis in an emphasis circuit 604, FM modulated in an FM modulation circuit 605, and inputted to an azimuth head 608 via a recording amplifier 606 and a step-up transformer 607, and thus azimuth recorded on the guard band part of the recording medium. On the other hand, the frequency divided signal of 0-4MHz and chrominance signals are frequency-multiplexed by circuits in exactly the same configuration as those of a general still video system, and recorded on a recording track by a main head 615.

30. 发明专利

JPS63121188A OPTICAL RECORDING AND REPRODUCING METHOD FOR OPTICAL CARD 失效
公开(公告)号：JPS63121188A
公开(公告)日：1988-05-25
申请号：JP26663286
申请日：1986-11-11
申请人： CANON KK
发明人： FUJIMOTO MAKOTO
IPC分类号： G11B7/00 , B42D15/10 , G06K17/00 , G11B7/0033 , G11B23/00 , G11B25/04
摘要： PURPOSE:To realize a high recording density equal to an optical recording medium except a general optical card by charging a laminate film, cutting and removing a sealed part, peeling the charged laminate film by an electrical attraction force and recording and reproducing information in an optical recording member. CONSTITUTION:After the laminate film 2 is charged, the sealed part 3 is cut and removed, then, the charged laminate film 2 is peeled by the electrical attraction force, thereafter, the information is recorded and reproduced on the optical recording member 11, so that the record surface of the optical card is protected by the laminate film 2 and an external flaw or the adhesion of dust is received by the laminate film 2. Accordingly, except at the time of mounting in a writer or reader, the card surface is constantly maintained in a laminated state. Thereby, the high density recording and reproduction can be attained.

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