公开(公告)号：DE3221972A1

公开(公告)日：1983-01-05

申请号：DE3221972

申请日：1982-06-11

Applicant: SONY CORP

Inventor： SONEDA MITSUO ,  OTSU TAKAJI ,  KUTATAGI KEN

IPC: H04N5/30 ,  G02F1/133 ,  G02F1/136 ,  G02F1/1368 ,  G09F9/30 ,  G09G3/20 ,  G09G3/36 ,  H04N3/12

Abstract: A liquid crystal matrix display device has a plurality of liquid crystal display elements arranged in an X-Y matrix pattern. Vertical transmitting lines are connected to all of the display elements of each column, and horizontal transmitting lines are connected to each of the display elements of each row. Each of the vertical lines is connected through an input switching element to an input circuit to receive a video input signal and a horizontal pulse generator provides sequential pulse signals to control terminals of the input switching elements. In order to compensate for crosstalk that occurs because of parasitic capacitance between the vertical transmitting lines and the liquid crystal display elements, auxiliary lines are provided for the columns of such display elements, and each has a predetermined compensating capacitance relative to its associated liquid crystal display elements. A compensating signal, which is an inverted version of the video signal, is applied in succession to the auxiliary lines to compensate for any crosstalk.

公开(公告)号：DE2811725A1

公开(公告)日：1978-09-21

申请号：DE2811725

申请日：1978-03-17

Applicant: SONY CORP

Inventor： KUTATAGI KEN ,  NAKAMURA MASAYOSHI

IPC: G01R19/04 ,  G11B27/36 ,  G01R19/26

Abstract: A level indicating apparatus indicates the peak level of an analog signal and also indicates the instantaneous value of the analog signal during a recurring time interval of predetermined length. The apparatus includes a circuit for generating, during each recurring time interval, a train of pulses whose number corresponds to the level of the analog signal, a storage device which may be a shift register for storing the train of pulses, a circuit for forming a pulse whose position corresponds to the peak level of the analog signal, a feedback circuit for feeding the pulse, whose position corresponds to the peak level, back to the storage device to be combined with the train of pulses corresponding to the instantaneous value of the analog signal, and a display for indicating the peak value. Preferably the display also indicates the instantaneous value of the analog signal. The circuit for forming the pulse whose position corresponds to the peak value can include a logic differentiation circuit.