• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Pixel magnification/demagnification apparatus and method are disclosed for controlling the size of reproducible image, the image being represented by video image signals or pixels generated by a raster scanner (12). A binary rate multiplier (102) is used for image size control along the X-axis, the multiplier being programmed to the size image desired to vary the frequency of the pixel clock signals output by the multiplier. A control flip-flop (45) astride the image pixel stream is driven by the multiplier clock signals to speed up or reduce the rate at which image pixels are output with consequent change in image size along the X-axis. For image size control along the Y-axis, a phase lock loop (86) control with programmable frequency generator (82) is provided for the scanning carriage drive motor (39). The frequency output of the generator is settable to the image size desired, changes in image size along the Y-axis being achieved either by increasing or decreasing the rate at which the scanning carriage (32) is moved.
    公开号:SU1281183A3
    申请号:SU813255797
    申请日:1981-03-06
    公开日:1986-12-30
    发明作者:А.Крин Питер；А.Агулнек Мартин
    申请人:Ксерокс Корпорейшн (Фирма)；
    IPC主号:
    专利说明:

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    The invention relates to a television technique and can be used to copy still images.
    The purpose of the invention is to simplify the device by eliminating the digital memory block.
    . FIG. 1 shows an apparatus for obtaining copies of images of adjustable size; general form; 2 in the same section; in fig. 3 is a structural electrical circuit of the device; in fig. 4 is a structural electrical motor control circuit.
    A device for obtaining copies of images of adjustable size includes a housing 1, inside which is located an engine 2, a lead screw 3, a carriage 4, an illuminator 5, two linear matrices 6 and 7 of light-sensitive elements, four mirrors 8-11 and a lens 12.
    The upper part of the housing 1 above the carriage has a window closed by a transparent plate 13 on which the original 14 is placed.
    The device also includes a switch 15, a valve element 16, a clock generator 17, a controlled pulse frequency divider 18, a controller 19, a scale controller 20, a reference signal generator 21, a phase shifter 22, a power amplifier 23, a rotation sensor 24, a rotation direction detector 24 , two counters 26 and 27, multiplexer 28, phase detector 29, adder 30, filter 31 and switch 32.
    The device works as follows.
    The original 14 is placed on a transparent plate 13 mounted in the upper part of the housing 1. The engine 2 moves the carriage 4 with the illuminator 5, two linear arrays 6 and 7 of photosensitive elements, four mirrors 8-11 and the lens 12 by means of a screw 3. the passage of the carriage 4 under the transparent plate 13 linearly illuminated area moves across the entire surface of the original 14. After the scan is completed, the carriage 4 returns to its original position. Linear matrices 6 and 7 are located in such a way that the field of view of one matrix transforms the field of view of another matrix No. 1, therefore
    Provides seamless scanning. The transition from one linear matrix (6) to another (7) is performed using a key 15. The image is scanned by linear matrices 6 and 7 by applying control voltages from the clock generator 17.
    The image size is changed by the regulator 20, which generates a control signal supplied to the controlled pulse frequency divider 18. As a result, the valve element 16 receives a clock signal of one or another frequency. Increasing the frequency increases the size of the image, and decreasing it reduces it depending on the frequency change.
    Resizing along the movement of the carriage 4 is carried out by increasing or decreasing the speed of movement of the carriage 4.,
    The controller 19 provides control signals that determine the frequency of the reference signal generator 21. The rotational speed of the engine 2 is controlled by a phase control loop including a sensor 24 connected to the lead screw 3, a detector 25, a phase shifter 22 a filter 31, and a power amplifier 23. The phase detector 29 determines the phase shift between the signals of the generator 21 and the sensor 24. The comparison result through the adder 30, the filter 31 and the amplifier 23 causes the rotation speed of the engine 2 to change. The controller 19 turns on the filter 31 through the switch 32 to ensure stable operation of the phase control loop. The multiplexer 28 connects to the phase detector 29 one or another output of the detector 25 depending on the direction of movement / ka-. racks 4. The output signals of the detector 25 are also used to change the state of the counters 26 and 27 determining the position of the carriage 4.
    权利要求:
    Claims (1)
    [1]
    Formula invented and
    A device for obtaining copies of images of adjustable size, containing a transparent plate on which the original is located, a carriage on which a mirror illuminator, a lens and two linear arrays of photosensitive elements are attached, a lead screw mounted on an engine shaft and connected to a carriage that is installed with movements under the transparent plate, a key whose inputs are connected to the outputs of the first and second linear arrays of the photosensitive elements, respectively, as well as the clock generator, Which odes are connected to the corresponding inputs of linear arrays of photosensitive elements, the original being optically connected through a transparent plate with an illuminator and through mirrors and a lens to both linear matrices of photosensitive elements, that is, The goal is to simplify 12 3 NIN devices by eliminating a digital memory block, a valve element and a controlled pulse frequency divider, a serially connected controller, a reference signal generator, a phase shifter and a power amplifier are inserted into it. spine, whose output is connected to the engine, while an additional output clock generator via a controllable de. The pulse frequency switch is connected to the control input of the valve element, the signal input of which is connected to the key output, and the second output of the controller is connected to the control input of the controlled pulse frequency divider.
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    同族专利:
    公开号 | 公开日
    US4366508A|1982-12-28|
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    CA1202130A|1986-03-18|
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    JPS61122623A|1984-11-19|1986-06-10|Canon Inc|Projecting device|
    US4578689A|1984-11-26|1986-03-25|Data Recording Systems, Inc.|Dual mode laser printer|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US06/128,018|US4366508A|1980-03-07|1980-03-07|Image magnification and demagnification system|
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