公开(公告)号：CA1332463C

公开(公告)日：1994-10-11

申请号：CA604331

申请日：1989-06-29

Applicant: SONY CORP

Inventor： MOTOE HISAFUMI ,  KAWASHIMA HIROYUKI ,  TOKUHARA MASAHARU

IPC: H04N9/64 ,  H04N9/77 ,  H04N5/217

Abstract: A signal processing circuit for a moving detection circuit which has a coefficient generator which is connected to an output of a moving detection circuit. A level comparator is connected between the moving detection circuit and the coefficient generator and is also connected to a threshold voltage switch. An isolated-point eliminating circuit is connected between the level comparator and a time base filter which is connected at its output terminal to the input terminal of the coefficient generator. The coefficient generator includes a plurality of one bit delay devices which are connected in series and the plurality of one bit delay devices have a plurality of output terminals, and an adder is connected to the plurality of output terminals so as to add the output signals.

公开(公告)号：AU618411B2

公开(公告)日：1991-12-19

申请号：AU4270989

申请日：1989-10-10

Applicant: SONY CORP

Inventor： NAITO HIDEFUMI ,  SARUGAKU TOSHIO ,  TOKUHARA MASAHARU

IPC: H04N5/93 ,  H04N5/95 ,  H04N5/06 ,  H04N5/783

公开(公告)号：FR2638044A1

公开(公告)日：1990-04-20

申请号：FR8909899

申请日：1989-07-21

Applicant: SONY CORP

Inventor： MOTOE HISAFUMI ,  KAWASHIMA HIROYUKI ,  TOKUHARA MASAHARU

IPC: H04N5/14

Abstract: A moving detection circuit which has a difference level generator which includes at least a frame delay circuit, and a vertical correlation detector which is connected to the difference signal generator and including a plurality of filters connected to the difference signal generator. A switching circuit for selecting one of the plurality of filters is provided and a control circuit is connected to the vertical correlation detector so as to control the switching circuit in response to the output level of the vertical correlation detector.

公开(公告)号：CA1257689A

公开(公告)日：1989-07-18

申请号：CA496070

申请日：1985-11-25

Applicant: SONY CORP

Inventor： KAWASHIMA HIROYUKI ,  KITA HIROYUKI ,  TOKUHARA MASAHARU

IPC: H04N5/44 ,  H04N9/64 ,  H04N11/00

Abstract: DIGITAL SCAN CONVERTER AND INCREASED RATE SYNC PULSE GENERATOR A digital scan converter includes an analog-to-digital converter or converting red, green and blue analog primary color signals to red, green and blue digital primary color signals, a memory for storing the red, green and blue digital primary color signals, a memory control circuit for writing the red, green and blue digital primary color signals in the memory at one speed and reading out the red, green and blue digital primary color signals from the memory at a faster speed, a digital-to-analog converter for converting the red, green and blue digital primary color signals read out from the memory to scanconverted red, green and blue analog primary color signals, a clock signal generator for supplying clock signals to the memory control circuit, the digital-to-analog converter and the analog-to-digital converter, and a synchronizing signal generator also controlled by the memory control circuit for producing synchronizing signals for the scan-converter red, green and blue analog primary color signals.

公开(公告)号：FR2551288B1

公开(公告)日：1989-01-20

申请号：FR8413091

申请日：1984-08-22

Applicant: SONY CORP

Inventor： HONGU MASAYUKI ,  TAMURA TAKAHIKO ,  TOKUHARA MASAHARU

IPC: H04N5/16 ,  H04N9/00

Abstract: A dark signal component below a predetermined level of a video signal is varied such that a dark peak level is made to coincide with a pedestal level by feedback control. According to this configuration, a signal component toward a white level side above the predetermined level is not changed by dark restoration, thus obtaining stable color reproduction and stable brightness which are not affected by the dark restoring operation.

公开(公告)号：GB2148070B

公开(公告)日：1987-08-12

申请号：GB8420271

申请日：1984-08-09

Applicant: SONY CORP

Inventor： TAMURA TAKAHIKO ,  TOKUHARA MASAHARU

IPC: H04N5/59 ,  H04N9/30 ,  H04N9/64

Abstract: A CRT drive control circuit for automatically limiting beam current when it is too large. A brightness reduction control and a contrast reduction control are alternately applied in accordance with a dark level detection of a video signal.

公开(公告)号：GB2145599B

公开(公告)日：1987-02-04

申请号：GB8420657

申请日：1984-08-14

Applicant: SONY CORP

Inventor： HONGU MASAYUKI ,  TAMURA TAKAHIKO ,  TOKUHARA MASAHARU

IPC: H04N5/16

Abstract: A dark signal component below a predetermined level of a video signal is varied such that a dark peak level is made to coincide with a pedestal level by feedback control. According to this configuration, a signal component toward a white level side above the predetermined level is not changed by dark restoration, thus obtaining stable color reproduction and stable brightness which are not affected by the dark restoring operation.

公开(公告)号：DE3430593A1

公开(公告)日：1985-03-07

申请号：DE3430593

申请日：1984-08-20

Applicant: SONY CORP

Inventor： HONGU MASAYUKI ,  TAMURA TAKAHIKO ,  TOKUHARA MASAHARU

IPC: H04N5/16

Abstract: A dark signal component below a predetermined level of a video signal is varied such that a dark peak level is made to coincide with a pedestal level by feedback control. According to this configuration, a signal component toward a white level side above the predetermined level is not changed by dark restoration, thus obtaining stable color reproduction and stable brightness which are not affected by the dark restoring operation.

公开(公告)号：FR2551293A1

公开(公告)日：1985-03-01

申请号：FR8413090

申请日：1984-08-22

Applicant: SONY CORP

Inventor： TAMURA TAKAHIKO ,  TOKUHARA MASAHARU

IPC: H04N5/59 ,  H04N9/30 ,  H04N9/64

Abstract: A CRT drive control circuit for automatically limiting beam current when it is too large. A brightness reduction control and a contrast reduction control are alternately applied in accordance with a dark level detection of a video signal.

公开(公告)号：IT8422373D0

公开(公告)日：1984-08-21

申请号：IT2237384

申请日：1984-08-21

Applicant: SONY CORP

Inventor： HONGU MASAYUKI ,  TAMURA TAKAHIKO ,  TOKUHARA MASAHARU

IPC: H04N5/16 ,  H04N

Abstract: A dark signal component below a predetermined level of a video signal is varied such that a dark peak level is made to coincide with a pedestal level by feedback control. According to this configuration, a signal component toward a white level side above the predetermined level is not changed by dark restoration, thus obtaining stable color reproduction and stable brightness which are not affected by the dark restoring operation.