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    2.
    发明专利
    未知

    公开(公告)号：DE60141445D1

    公开(公告)日：2010-04-15

    申请号：DE60141445

    申请日：2001-04-25

    Applicant: SHARP KK ,  SONY CORP

    Inventor： SHINO KUNINORI ,  KURE YOSHINOBU ,  HORIE KAZUYOSHI ,  TORIUMI YOUICHI ,  MASUDA YOSHIFUMI ,  NAGURA KAZUHITO

    IPC: H04B10/43 ,  G02B6/42 ,  H01L31/12 ,  H01L31/16 ,  H04B10/2507 ,  H04B10/2581 ,  H04B10/556

    Abstract: An optical communication apparatus in which bidirectional communication may be made over a sole optical fiber. A light emitting device (132) radiates light through an optical system (133) to an optical fiber (76). The light transmitted from the optical fiber (76) is received over optical system (133) by a light receiving device (136). In the optical system (133), such a relationship S - 2QN ≥ M > S/2Q - N is set, where M is the light volume of the stray light emitted, Q is the value of a Q-value representing the communication quality as required, S is the light volume of a received signal from a communication partner and N is the sum total of the Gaussian noise.

    4.
    发明专利
    未知

    公开(公告)号：AT460018T

    公开(公告)日：2010-03-15

    申请号：AT01925920

    申请日：2001-04-25

    Applicant: SONY CORP ,  SHARP KK

    Inventor： SHINO KUNINORI ,  KURE YOSHINOBU ,  HORIE KAZUYOSHI ,  TORIUMI YOUICHI ,  MASUDA YOSHIFUMI ,  NAGURA KAZUHITO

    IPC: H04B10/43 ,  G02B6/42 ,  H01L31/12 ,  H01L31/16 ,  H04B10/2507 ,  H04B10/2581 ,  H04B10/556

    Abstract: An optical communication apparatus in which bidirectional communication may be made over a sole optical fiber. A light emitting device (132) radiates light through an optical system (133) to an optical fiber (76). The light transmitted from the optical fiber (76) is received over optical system (133) by a light receiving device (136). In the optical system (133), such a relationship S - 2QN ≥ M > S/2Q - N is set, where M is the light volume of the stray light emitted, Q is the value of a Q-value representing the communication quality as required, S is the light volume of a received signal from a communication partner and N is the sum total of the Gaussian noise.

    POINTING DEVICE AND ELECTRONIC APPARATUS WITH THE SAME
    7.
    发明专利
    POINTING DEVICE AND ELECTRONIC APPARATUS WITH THE SAME 审中-公开

    公开(公告)号：JP2012108731A

    公开(公告)日：2012-06-07

    申请号：JP2010257095

    申请日：2010-11-17

    Applicant: SHARP KK

    Inventor： MASUDA YOSHIFUMI

    IPC: G06F3/041

    Abstract: PROBLEM TO BE SOLVED: To provide a pointing device capable of accurately detecting the stop of a subject being moved.SOLUTION: A pointing device 1 includes: a light source 4 for irradiating a finger 2 with light; an image sensor 3 for converting reflected light from the finger 2 into an electric signal according to a moving speed of the finger 2 to output the electric signal; and a subject stop detecting part 3 for detecting the stop of the finger 2 being moved, based on the electric signal according to the moving speed of the finger 2 output from the image sensor 3.

    8.
    发明专利
    失效

    公开(公告)号：JPH05243904A

    公开(公告)日：1993-09-21

    申请号：JP3901692

    申请日：1992-02-26

    Applicant: SHARP KK

    Inventor： MASUDA YOSHIFUMI ,  OTSUKA YOSHIHIRO

    IPC: H03H11/26 ,  H03H11/02 ,  H03K5/13 ,  H03K17/78

    Abstract: PURPOSE:To obtain large and stable lag without adding a capacitor at the outside, and to reduce weight and size by converting once an input signal into light by a light emitting part, and converting again this light into an electric signal, and outputting it. CONSTITUTION:When a light receiving element 10 receives the light, the capacitor 22 starts charging. At, that time, in a constant current circuit 24, a supply current to a parallel-connected body 27 is limited by an auxiliary limiter circuit 29. Besides, in the parallel-connected body 27 too, the base current I13 of a current adjusting transistor Q14 is reduced compared with the collector current I12 of the current adjusting transistor Q14 by supplying the collector current of one side of a current mirror circuit 26 to the base terminal of the current adjusting transistor Q14. Then, the collector current I14 of the other side of the current mirror circuit 26 equivalent to the base current I13 is inputted to the capacitor 22. Then, an input current I14 to the capacitor 22 becomes very small compared with the initial current from power supply Vcc, and its charging time can be made slow.

    OPTICAL COUPLER
    10.
    发明专利
    OPTICAL COUPLER 失效

    公开(公告)号：JPH04144419A

    公开(公告)日：1992-05-18

    申请号：JP26866890

    申请日：1990-10-05

    Applicant: SHARP KK

    Inventor： OTSUKA YOSHIHIRO ,  MASUDA YOSHIFUMI

    IPC: H01L31/12 ,  G05B19/05 ,  H03K5/01 ,  H03K5/1252 ,  H03K17/78

    Abstract: PURPOSE:To improve noise resistance characteristics by switching the up- counting and down-counting of an UP/DOWN counter in accordance with the state of a comparator. CONSTITUTION:An output delay circuit 55 is provided with an oscillator 58, the UP/DOWN counter 59, a decoder circuit 61 for switching its output state from the 'L' (or 'H') level to the 'H' (or 'L') level when the count value of the counter 59 reaches a set value in order to switch the up-counting and down-counting of the counter 59 in accordance with the state of the comparator 54, and an RS-FF circuit 64 to be set up by an exclusive OR between the output of the circuit 61 and the output of the comparator 54 and reset by a signal indicating the change of the output state of the circuit 61 from L to H or H to L. The clock signal of the counter 59 is controlled by the circuit 64. Thus, the noise resistance characteristics can be improved.

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