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    • 66. 发明专利
    • LIQUID CRYSTAL DRIVING METHOD AND LIQUID CRYSTAL DISPLAY DEVICE
    • JPH0713523A
    • 1995-01-17
    • JP15482693
    • 1993-06-25
    • HITACHI LTD
    • KURIHARA HIROSHI
    • G02F1/133G09G3/36
    • PURPOSE:To substantially improve display quality with simple constitution by successively taking in time serially inputted video signals for one line into a sampling/hold circuit irregularly changing these signals within a range of the level nearly corresponding to variations in output elements. CONSTITUTION:The sampling/hold circuit 105 takes in and holds the video signals S inputted by the sampling timing signals C1 to C5 corresponding to the time serially inputted video signals S. Voltage fluctuation circuits 107 are disposed for each of respective output circuits 106. These voltage fluctuation circuits 107 are controlled by a voltage fluctuation circuit control circuit 108. This voltage fluctuation circuit control circuit 108 forms the voltages irregularly generated within the range of the process variations in the output elements. As a result, the output signals outputted from the output circuit 106 are the signals formed by adding the irregular signals to the signal voltages held in the sampling/hold circuit 105.
    • 67. 发明专利
    • DATA TRANSFER DEVICE
    • JPH04157552A
    • 1992-05-29
    • JP28374090
    • 1990-10-22
    • HITACHI LTD
    • KURIHARA HIROSHIIGARASHI YOICHI
    • G06F13/38G06F5/06
    • PURPOSE:To prevent data whose transfer is not completed yet from being mistransferred by starting the data transfer to a receptionside system after data corresponding to the length of a transfer block to the reception-side system are stored in a buffer RAM from a transmission-side system. CONSTITUTION:A data transfer control circuit transfers data between a system B like a magnetic disk controller and a system A such as a microprocessor MPU through the buffer RAM. The data transfer from the transmission-side system to the buffer RAM is performed corresponding to the block length of the data which is processed by the reception-side system and then the data transfer to the reception-side system is started after the data corresponding to the length of the transfer block to the reception-system are stored in the buffer RAM. Consequently, the data whose transfer is not completed yet are prevented from being mistransferred.