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1. 发明专利

JPH09294257A CAMERA CONTROL SYSTEM 失效
公开(公告)号：JPH09294257A
公开(公告)日：1997-11-11
申请号：JP10679296
申请日：1996-04-26
申请人： HITACHI LTD
发明人： SHIBANO SHOGO , KOMATSU MASAYUKI , EHASHI YOSHIAKI
IPC分类号： H04N7/18
摘要： PROBLEM TO BE SOLVED: To obtain the excellent camera control system with reliability and external appearance by connecting sequentially a 1st control port and a 2nd control port in series, connecting a video output terminal of a 1st camera to a monitor and the 1st control port to an operation section to control a plurality of cameras with a few number of wires. SOLUTION: A camera control signal outputted from an operation section 7 is given to a control port P1 of a control section 4 of a camera 1a and another control port P2 is connected to the control port P1 of a camera 1b. Similarly control ports of n-sets of cameras are sequentially connected. On the other hand, as to a video image, a video output terminal of n-th camera connects to (n-1)th camera video input terminal. Succeedingly a video output terminal of the (n-1)th camera connects to a video input terminal of a (n-2)th camera video input terminal. Similarly video output terminals and video input terminals of the n-sets of the cameras are connected sequentially and a video output terminal of the 1st camera 1a connects to a monitor section 8. Thus, a plurality of the cameras are controlled with a few number of wires.

2. 发明专利

JPH0232667A ISDN TERMINAL ADAPTER 失效
公开(公告)号：JPH0232667A
公开(公告)日：1990-02-02
申请号：JP18186188
申请日：1988-07-22
申请人： HITACHI LTD
发明人： UJIIE MAKOTO , KOMATSU MASAYUKI , TSUJI HIROKUNI , KAWAMURA HIROSHI , WAKAYAMA KAZUKO
IPC分类号： H04N1/00 , H04L29/06 , H04N1/32
摘要： PURPOSE:To easily and inexpensively utilize the speediness and high quality of the ISDN by enabling a universal G3 facsimile to be connected to the ISDN, and also enabling communication with a G4 facsimile to be performed. CONSTITUTION:Transmission from the G3 facsimile 12 is performed by receiving a push button signal or a dial pulse signal from the facsimile by a line selection signal receiving part 7 via a subscriber circuit 16 and judging whether it is the transmission to a PSTN or the ISDN by identifying a line number. When it is the transmission to the ISDN, a picture signal from the G3 facsimile is MMR-encoded by a facsimile encoder/decoder part 3 via a control bus 14, and is accumulated in an encoded data accumulation part 4. Also, at this time, the protocol conversion of picture data from G3 to G4 is performed simultaneously. In such a way, it is possible to perform communication with G3 and G4 without using the facsimile conforming to an expensive G4 ISDN.

3. 发明专利

JPH05221535A READING/RECORDING DEVICE 失效
公开(公告)号：JPH05221535A
公开(公告)日：1993-08-31
申请号：JP2501092
申请日：1992-02-12
申请人： HITACHI LTD
发明人： KIKUCHI SATOSHI , KOMATSU MASAYUKI
IPC分类号： B65H1/26 , B65H3/44 , B65H7/04 , B65H83/02 , H04N1/00
摘要： PURPOSE:To obviate any need of a space for mounting/demounting and drawing of a recording paper cassette and to reduce a device cost by performing feed of recording paper sheets by utilizing a document table. CONSTITUTION:When recording paper sheets are placed on a document table 1 and supply of the recording paper sheets is indicated by means of a key board, a switching claw 22 is rotated to A side and the document table 1 is coupled to a supply conveyance passage 21. Further by rotating the switch claw 23 in a direction C, the supply conveyance passage 21 is coupled to a recording paper cassette 2. In this state, the paper sheets on the document table are taken out one by one and conveyed as recording paper sheets to the supply conveyance passage 21 by means of conveyance rollers 15, and the recording paper sheets are contained in a recording paper cassette 2.

4. 发明专利

JPH01264362A IMAGE PROCESSING DEVICE 失效
公开(公告)号：JPH01264362A
公开(公告)日：1989-10-20
申请号：JP9139288
申请日：1988-04-15
申请人： HITACHI LTD
发明人： KIKUCHI SATOSHI , KOYAMA TAKUO , KAWAMURA HIROSHI , KOMATSU MASAYUKI
IPC分类号： H04N1/387
摘要： PURPOSE:To efficiently reverse an original document upside down when a user sets the original upside down accidentally on an image reader by inverting the sequence of a bit storing of one line before performing compressive encoding, and storing compressively encoded image data at every line in the reverse sequence of readout sequence. CONSTITUTION:When an indication for performing an upside-down processing is issued to an encoding line and reference line inversion processing part 13, the encoding line and reference lie inversion processing part 13 sets original image line data l1 in a line memory 3 as an encoding line, and sets original line data l2 in a line memory 4 as a reference line. An encoder 5 inputs data of two lines by the instruction of a control part 9 via main scan inversion processing parts 11 and 12, and executes two-dimensional encoding. The code compression data D1 of the line data l1 generated by the encoder 5 is stored in the termination of a code compression data buffer memory 6 by a line sequence inversion processing part 14. Since it is possible to perform one- dimensional encoding and the two-dimensional encoding from a line inputted first by reading scan by such upside-down processing, the capacity of a memory can be reduced.

5. 发明专利

JPS62111566A IMAGE READER 失效
公开(公告)号：JPS62111566A
公开(公告)日：1987-05-22
申请号：JP25072685
申请日：1985-11-11
申请人： HITACHI LTD
发明人： KOMATSU MASAYUKI
IPC分类号： H04N1/21
摘要： PURPOSE:To remove the dispersion of analog image outputs from a sensor and to improve the reading quality of an image by setting up the scanning timing of the light response type sensor to a fixed period. CONSTITUTION:The image reading sensor 1 outputs an analog signal corresponding to an original image while setting up one line to a fixed period by a clock from a sensor driving timing generator 4. The sensor output is converted into binary image data by a binary-encoding part 3 and then the converted data are written in a line memory 11 or 12 in accordance with the instruction of line memory writable instruction parts 7, 8. The image data of one line written in the memory 11 or 12 are read out by a reading memory switching part 6. Since the variance of analog outputs from the light response type sensor can be removed in said constitution, the reading quality of an image can be improved.

6. 发明专利

JPH04105456A FACSIMILE EQUIPMENT 失效
公开(公告)号：JPH04105456A
公开(公告)日：1992-04-07
申请号：JP22495290
申请日：1990-08-27
申请人： HITACHI LTD
发明人： KOMATSU MASAYUKI , TAKAOKA KAZUHIKO , YOKOSUKA YASUSHI
IPC分类号： H04N1/00
摘要： PURPOSE:To simplify the circuit constitution, to make the equipment small and to reduce the cost by employing one and same hardware so as to implement a read function, a recording function and a transmission function. CONSTITUTION:When a picture data is sent, a program to realize a read function is selected and executed and then a program to realize a transmission function is selected and executed. When a picture data is received, program to realize the transmission function is selected and executed and then a program to realize a recording function is selected and executed. When a picture data is copied, a program to realize the read function is selected and executed and then a program to realize the recording function is selected and executed.

7. 发明专利

JPS62130065A SHADING CORRECTION CIRCUIT 失效
公开(公告)号：JPS62130065A
公开(公告)日：1987-06-12
申请号：JP26929185
申请日：1985-12-02
申请人： HITACHI LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： KONO TAKAMITSU , KOMATSU MASAYUKI , KANAYAMA HIDEAKI , MURAKAMI CHOTARO
IPC分类号： H04N1/401 , G06K9/36 , G06T1/00 , H04N1/40
摘要： PURPOSE:To attain high speed tracking in the reproduction of half tone requiring an optical read sensor and a multi-grading level by applying A/D conversion to a video signal from a sensor at each bit, storing the result in a ROM and using a D/A converter so as to reproduce the signal. CONSTITUTION:The output video signal from the sensor is received by a buffer 1 and subject to sample-and-hold, then the result is inputted to a peak hold circuit 8. A counter 10 activates a ROM 11 storing a white level of the sensor and a ROM 12 storing a dither pattern and the result is reproduced as an analog signal by a D/A converter 13 and an operational amplifier 14. A peak hold value is inputted as a reference voltage input Vref of the D/A converter 13, the reproducing signal changes in following the background density of the original when the signal is a binary-coded signal and to the lightness of the light source when a dither pattern thereby varying the slice level automatically. Moreover,in case of the dither pattern, a white level waveform is inputted to the voltage Vref of the D/A converter 13 connected to the ROM 12 to vary the voltage level of the dither pattern at each bit.

8. 发明专利

JPS63313941A SIMPLIFIED DIGITAL CIRCUIT SWITCHING NETWORK SIMULATION DEVICE 失效
公开(公告)号：JPS63313941A
公开(公告)日：1988-12-22
申请号：JP14896787
申请日：1987-06-17
申请人： HITACHI LTD
发明人： KOMATSU MASAYUKI
IPC分类号： H04L29/14 , H04L13/00
摘要： PURPOSE:To simply simulate a network by controlling the connection and disconnection of a call by the I/O control of a computer. CONSTITUTION:When the termination of a dial number is recognized by an A circuit input port 8 through a receiver 3, a CI signal is turned ON by a B circuit control output port 11, and considering it as one signal in the signal 23, through a driver 5, a call incoming and a calling from the network to a terminal late indicated. Afterwards, the switch of a data line connection port 7 is turned ON, and the transmitting data line Txa of the terminal 1 and the receiving data line Rxb of the terminal 2, and the transmitting data line Txb of the terminal 2 and the receiving data line Rxa of the terminal 1 are connected respectively. Thus, because all for a speed assortment or a physical interface assortment as well can be made built-in, a perfect device as a simulation network can be constituted.

9. 发明专利

JPS6373771A PSEUDO HALFTONE BINARIZATION CIRCUIT 失效
公开(公告)号：JPS6373771A
公开(公告)日：1988-04-04
申请号：JP21699786
申请日：1986-09-17
申请人： HITACHI LTD
发明人： KOMATSU MASAYUKI , KOSEKI TAKASHI , WAKAYAMA KAZUKO , TSUJI HIROKUNI , KAWAMURA HIROSHI
IPC分类号： H04N1/40
摘要： PURPOSE:To reproduce a pseudo halftone from which the influence of a fixed pattern noise is removed and to improve the picture quality of a reproduced picture by forming a halftone slice level by the use of a shading waveform at the time of being bright, the fixed pattern noise and a dither matrix. CONSTITUTION:The output (e) of a contact sensor 1 passes an analog signal processing circuit 2, a sample/hold circuit 3, digitally converted in an A/D converting part 5 and inputted to a shading writing control part 6. The shading writing control part 6 stores the shading waveform at the time of reading an all white original in a bright time shading waveform storage part 7 and stores the fixed pattern noise indicated by the shading waveform at the time of reading an all black original in a dark time shading waveform storage part 8. An arithmetic part 10 executes an operation of an expression (1) by using signals A, B taken out from the storage part 7, 8 respectively and a gradation level signal alphaij from a dither matrix pattern generating part 9, outputs the arithmetic result as the halftone slice level signal C and a binarization circuit 11 binarizes the output (h) of the circuit 3 by considering the signal C to be a threshold.

10. 发明专利

JPS62126863A RINGING CHOKE CONVERTER 失效
公开(公告)号：JPS62126863A
公开(公告)日：1987-06-09
申请号：JP26376385
申请日：1985-11-26
申请人： HITACHI LTD , HITACHI METALS LTD
发明人： KAWASHIMA MASAHARU , SUEHIRO KOJI , ENDO TERUHIKO , KUROKI YOSHINORI , KOMATSU MASAYUKI
IPC分类号： H02M3/338 , H02M3/335
摘要： PURPOSE:To quickly stop an oscillation of a ringing choke converter by providing means for turning a main transistor OFF by interrupting a feedback circuit when an input voltage is a predetermined value or lower. CONSTITUTION:When an input voltage is a predetermined value or higher, a transistor 1 repeats ON and OFF. When after the transistor 1 starts an ON and OFF operation, an input voltage drops and a voltage generated in a winding n3 during ON period of the transistor 1 becomes smaller than the sum of the Zener voltage of a Zener diode 15 and the base-emitter saturated voltage of a sub transistor 17, the transistor 17 becomes OFF. Accordingly, when the transistor 1 is OFF, the secondary current of the transistor 2 becomes zero. Thus, even if a voltage is generated in the secondary winding n2 by a surge, since the transistor 17 is OFF, the transistor 1 does not become ON. Thus, a ringing choke converter can be positively stopped.

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