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    Remote document scanner
    1.
    发明授权
    Remote document scanner 失效
    远程文件扫描仪

    公开(公告)号：US3584144A

    公开(公告)日：1971-06-08

    申请号：US3584144D

    申请日：1968-08-23

    Applicant: COGNITRONICS CORP

    Inventor： SHEPARD DAVID H ,  GUSHUE EDWARD J

    IPC: G06K9/20 ,  H04N1/028 ,  H04N1/113 ,  H04N3/08

    CPC classification number: H04N1/1135 ,  G06K9/2009 ,  H04N1/028

    Abstract: An optical scanning unit particularly adapted for use in remote optical character recognition systems or the like and including a document feed drum together with a rotating mirror arranged to sweep a narrow beam of light on a scan path across the drum while the latter is stationary between indexing steps, there being provided adjacent the scan path an elongate strip of semiconducting material of the PIN type arranged to produce electrical output signals in response to incident light reflected from the scanning sweep across the document, thereby to develop scan signals indicating the presence or absence of character elements along the scan path.

    Multiple-scanner character reading system
    2.
    发明授权
    Multiple-scanner character reading system 失效
    多扫描器字符读取系统

    公开(公告)号：US3582884A

    公开(公告)日：1971-06-01

    申请号：US3582884D

    申请日：1968-01-30

    Applicant: COGNITRONICS CORP

    Inventor： SHEPARD DAVID H

    IPC: G06K9/00 ,  G06K9/10 ,  H04N1/00

    CPC classification number: G06K9/00

    Abstract: A system comprising a central station having data processing apparatus with a common data buss arrangement interconnecting a data processor with its peripheral devices including a number of incoming data buffers. A plurality of remote desk top scanner units are connected to the central station, each being arranged to receive a document bearing graphic characters and to scan the characters on the document with an optical light beam so as to sweep the character area in a series of adjacent paths. Each remote scanner has means to develop scan signals representing the light reflected from the scanned document and to produce binary code groups indicating the scan distances between certain selected events such as white-to-black transitions. The code groups from each remote scanner are transmitted to a respective data buffer at the central station and subsequently are decoded to reconstruct the original video scan data in a form suitable for deciphering by character recognition means so as to identify the individual characters of the document. The central data processing apparatus, including decoding and character recognition means, operates on a time-sharing basis to service all of the remote units.

    JPS5913793B1 -
    6.
    发明专利
    JPS5913793B1 - 失效

    公开(公告)号：JPS5913793B1

    公开(公告)日：1984-03-31

    申请号：JP12878679

    申请日：1979-10-05

    Applicant: Cognitronics Corp

    Inventor： SHEPARD DAVID H ,  GUSHUE EDWARD J

    IPC: H04N1/04 ,  G06K9/20 ,  H04N1/047 ,  H04N1/053 ,  H04N1/113 ,  H04N1/12 ,  H04N1/36 ,  H04N1/419

    CPC classification number: G06K9/2009 ,  H04N1/047 ,  H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N1/121 ,  H04N1/36 ,  H04N1/419 ,  H04N2201/02439 ,  H04N2201/02443 ,  H04N2201/03108 ,  H04N2201/0471 ,  H04N2201/04734 ,  H04N2201/04746 ,  H04N2201/04756 ,  H04N2201/04775 ,  H04N2201/04791 ,  H04N2201/04794 ,  H04N2201/04798

    Abstract: 1,214,373. Character recognition. COGNITRONICS CORP. 6 March, 1968 [20 March, 1967], No. 10951/68. Heading G4R. In a character reading system comprising a central station having means for character analysis, which is coupled to a remote station having means for generating signals corresponding to data scanned from a document, means at the remote station produce clock pulses at scan positions uniformly spaced along the scanning path and means controlled by the clock pulses develop binary pulses in accordance with the amount of radiation reflected from the document to direct to the central station data signals corresponding to the binary pulses. The document 26, Fig. 4, is inserted into a guide channel and carried by a drum 20 which is rotated in discrete steps by a stepping motor 22, Fig. 5. A pressure pad 32 is provided with an aperture exposing a transverse portion of the document to scanning by a beam 42 reflected by a mirror 44 from a light source 46, e.g. an electric arc or a laser. The mirrors 44 are arranged around the circumference of a rotating disc 50 driven by a synchronous motor and are disposed at equal angles with respect to their neighbours.. Each time the beam is swept across the document 26 the drum 20 is stationary and between sweeps the drum is rotated a small angular increment by the motor 22. The light reflected from the document is detected by a photo-cell 94 and the resulting signal is supplied to an amplifier 102, Fig. 5, producing a binary output depending upon whether the signal is above or below a predetermined threshold value which is fed to a control circuit 104. A half-silvered mirror 114 reflects the main beam 42 so that a beam 42a scans a strip 110 carrying uniformly spaced vertical markings 112 and the light reflected by the strip is detected by a photo-cell 108. The resulting clock pulses are supplied via an amplifier 106 to the control circuit 104 to gate the signal input, the gated binary pulses then being fed into a shift register in the circuit 104 where the transitions between "black" and "white" are detected and used to control a counter 120 operated by the clock pulses. The counter 20 produces permutation code signals indicating the number of consecutive scan samples of the same character (white or black) which are transferred to a buffer store 122 supplying via transmission line 124 the central station 126. As described, 384 clock pulses are produced during each scan and at the end of a scan the circuit 104 produces a pulse to step the motor 22. The last sample may be arranged by circuit 104 to be a "black" bit to indicate to the central station that the scan is complete. Should the buffer 122 become filled a signal is sent via line 130 to the control circuit 104 which stops the counter and holds the count already developed by the counter, interrupts the stepping signal so that the drum 20 remains in position for a rescan of the same path, and counts 384 clock pulses subsequent to the signal on line 130. When the count reaches 384 the counter 12 is activated, the motor 22 stepped and the coding and transmission is resumed.

    APPARATUS FOR EXTRACTING ENERGY FROM WINDS AT HIGH ALTITUDES
    8.
    发明专利
    APPARATUS FOR EXTRACTING ENERGY FROM WINDS AT HIGH ALTITUDES 未知

    公开(公告)号：GB2119451A

    公开(公告)日：1983-11-16

    申请号：GB8311159

    申请日：1983-04-25

    Applicant: COGNITRONICS CORP

    Inventor： SHEPARD DAVID H

    IPC: F03D5/00 ,  F03D11/04 ,  F03D5/02 ,  F03D11/00

    Abstract: A wind-operated power-generating module for operation at high altitudes such as 1000 meters comprising a frame structure mounting a pair of vertically-separated parallel shafts around which pass endless belts supporting a series of parallel, elongate wing-like elements for movement around a closed path including the parallel shafts. Wind flow drives these elements around the closed path, to enable electrical power to be generated, and also provides lift to hold the module up at the appropriate high altitude. A number of such modules are tethered in fixed positions in the sky, and are controllable as is appropriate to accommodate changing wind conditions.

    IMPROVEMENTS IN OR RELATING TO CHARACTER READING SYSTEMS
    10.
    发明专利
    IMPROVEMENTS IN OR RELATING TO CHARACTER READING SYSTEMS 未知

    公开(公告)号：GB1214373A

    公开(公告)日：1970-12-02

    申请号：GB1095168

    申请日：1968-03-06

    Applicant: COGNITRONICS CORP

    Inventor： SHEPARD DAVID H ,  GUSHUE EDWARD J

    IPC: H04N1/04 ,  G06K9/20 ,  H04N1/047 ,  H04N1/053 ,  H04N1/113 ,  H04N1/12 ,  H04N1/36 ,  H04N1/419

    Abstract: 1,214,373. Character recognition. COGNITRONICS CORP. 6 March, 1968 [20 March, 1967], No. 10951/68. Heading G4R. In a character reading system comprising a central station having means for character analysis, which is coupled to a remote station having means for generating signals corresponding to data scanned from a document, means at the remote station produce clock pulses at scan positions uniformly spaced along the scanning path and means controlled by the clock pulses develop binary pulses in accordance with the amount of radiation reflected from the document to direct to the central station data signals corresponding to the binary pulses. The document 26, Fig. 4, is inserted into a guide channel and carried by a drum 20 which is rotated in discrete steps by a stepping motor 22, Fig. 5. A pressure pad 32 is provided with an aperture exposing a transverse portion of the document to scanning by a beam 42 reflected by a mirror 44 from a light source 46, e.g. an electric arc or a laser. The mirrors 44 are arranged around the circumference of a rotating disc 50 driven by a synchronous motor and are disposed at equal angles with respect to their neighbours.. Each time the beam is swept across the document 26 the drum 20 is stationary and between sweeps the drum is rotated a small angular increment by the motor 22. The light reflected from the document is detected by a photo-cell 94 and the resulting signal is supplied to an amplifier 102, Fig. 5, producing a binary output depending upon whether the signal is above or below a predetermined threshold value which is fed to a control circuit 104. A half-silvered mirror 114 reflects the main beam 42 so that a beam 42a scans a strip 110 carrying uniformly spaced vertical markings 112 and the light reflected by the strip is detected by a photo-cell 108. The resulting clock pulses are supplied via an amplifier 106 to the control circuit 104 to gate the signal input, the gated binary pulses then being fed into a shift register in the circuit 104 where the transitions between "black" and "white" are detected and used to control a counter 120 operated by the clock pulses. The counter 20 produces permutation code signals indicating the number of consecutive scan samples of the same character (white or black) which are transferred to a buffer store 122 supplying via transmission line 124 the central station 126. As described, 384 clock pulses are produced during each scan and at the end of a scan the circuit 104 produces a pulse to step the motor 22. The last sample may be arranged by circuit 104 to be a "black" bit to indicate to the central station that the scan is complete. Should the buffer 122 become filled a signal is sent via line 130 to the control circuit 104 which stops the counter and holds the count already developed by the counter, interrupts the stepping signal so that the drum 20 remains in position for a rescan of the same path, and counts 384 clock pulses subsequent to the signal on line 130. When the count reaches 384 the counter 12 is activated, the motor 22 stepped and the coding and transmission is resumed.

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