-
公开(公告)号：DE69530532T2
公开(公告)日：2004-03-25
申请号：DE69530532
申请日：1995-12-29
Applicant: SONY CORP
Inventor： KOYANAGI MASAKAZU , TOMITAKA TADAFUSA
Abstract: A video camera system and method is capable of automatically controlling the exposure of a desired object image. A plurality of average luminance values (S7, S8, S9) are respectively determined by a plurality of light measurement units (12, 9, 10). A plurality of reference luminance values (S10, S11) are obtained from a plurality of reference value circuits (13, 14). Selected ones of the average luminance values (S7, S8, S9) and the reference luminance values (S10, S11) are utilized to form control signals (S14). The control signals (S14) control a lens block section (50) of the video camera so as to maintain proper exposure of the desired object.
-
公开(公告)号：DE3751926T2
公开(公告)日：1997-02-27
申请号：DE3751926
申请日：1987-06-10
Applicant: SONY CORP
Inventor： MACHIDA YUKIHIKO , TOMITAKA TADAFUSA
Abstract: A motor rotation control apparatus employs a comb filter circuit (10) to filter out a signal component and its higher harmonics. An error signal (DS) indicative of an error between actual and target conditions of rotation of the motor is applied to the comb filter circuit (10) after a direct current component thereof is removed. The filtered signal and the error signal are added in a circuit (90) which produces a control signal used to control rotation of the motor (50). Predetermined successive portions (samples) of the error signal are each divided into a first digital signal portion having a predetermined number of upper bits of data and a second digital signal portion having the remaining lower bits of data. The lower bits are delayed a predetermined time and added to the error signal to compensate for lower bits of data which may be ignored in a digital-to-analog converter, operable on a limited number of bits, to provide an analog control signal used to control rotation of the motor.
-
公开(公告)号：SG1395G
公开(公告)日：1995-06-16
申请号：SG1395
申请日：1995-01-05
Applicant: SONY CORP
Inventor： MACHIDA YUKIHIKO , TOMITAKA TADAFUSA
Abstract: A motor rotation control apparatus employs a comb filter circuit (10) to filter out a signal component and its higher harmonics. An error signal (DS) indicative of an error between actual and target conditions of rotation of the motor is applied to the comb filter circuit (10) after a direct current component thereof is removed. The filtered signal and the error signal are added in a circuit (90) which produces a control signal used to control rotation of the motor (50). Predetermined successive portions (samples) of the error signal are each divided into a first digital signal portion having a predetermined number of upper bits of data and a second digital signal portion having the remaining lower bits of data. The lower bits are delayed a predetermined time and added to the error signal to compensate for lower bits of data which may be ignored in a digital-to-analog converter, operable on a limited number of bits, to provide an analog control signal used to control rotation of the motor.
-
公开(公告)号：CA1329258C
公开(公告)日：1994-05-03
申请号：CA585438
申请日：1988-12-09
Applicant: SONY CORP
Inventor： TOMITAKA TADAFUSA
IPC: H02P29/00 , G11B15/18 , G11B15/473
Abstract: A servo circuit for controlling a rotation of a drum motor to rotate a rotary head drum having a frequency generating circuit for generating a frequency signal corresponding to a revolution speed of a drum motor, a cycle detector circuit for detecting a cycle of the frequency signal from the frequency generating circuit, a detector circuit for detecting a speed deviation between a detected signal from the detector circuit and a reference signal to produce a speed deviation signal, a first circuit for generating a first rotation control signal based on the speed deviation signal, a second circuit for producing a second rotation control signal based on phase difference data obtained by integrating the speed deviation signal and an adder circuit for adding the first and second rotation control signals to produce a rotation control signal which is supplied to the drum motor to stably rotate the rotary head drum.
-
公开(公告)号：DE69426175D1
公开(公告)日：2000-11-30
申请号：DE69426175
申请日：1994-07-08
Applicant: SONY CORP
Inventor： TOMITAKA TADAFUSA , SEKIYA TSUNEO
Abstract: In a video signal follow-up processing system for adaptively tracking movement of a subject: a detection feature pattern is formed through acquisition (19,20) of brightness and hue frequency characteristic data based on pixel information in a detection measurement frame; a similarity calculation method(16), which can distinguish a reference measurement frame from other areas, is selected on a display screen; and the position of a detection measurement frame with a feature pattern having the highest similarity with the standard feature pattern obtained from the reference measurement frame is determined, in order to change and control an image to be projected on the display screen based on the positional information of the detection measurement frame, so that the video signal follow-up processing system can adaptively track movement of the subject.
-
Patent Agency Ranking
公开(公告)号：DE69024686T2
公开(公告)日：1996-06-27
申请号：DE69024686
申请日：1990-03-23
Applicant: SONY CORP
Inventor： TOMITAKA TADAFUSA
IPC: G11B15/467 , G11B15/473 , G11B15/18
Abstract: A video signal is recorded in oblique tracks on a magnetic tape. The tracks are successively scanned by rotary heads, and a reproduced radio frequency signal is obtained. The level of the signal as reproduced exhibits a nonlinearity as a function of deviations of the rotary heads from the successively scanned oblique tracks. In accordance with the invention, the running speed of the tape is controlled on the basis of the detected changes in signal level, and the gain of the reproduced radio frequency signal is controlled in such a way as to compensate for the nonlinearity of the reproduced signal.
-
公开(公告)号：HK120395A
公开(公告)日：1995-07-28
申请号：HK120395
申请日：1995-07-20
Applicant: SONY CORP
Inventor： TOMITAKA TADAFUSA
IPC: H02P29/00 , G11B15/18 , G11B15/473 , G05D13/62
Abstract: A servo circuit for controlling a rotation of a drum motor to rotate a rotary head drum having a frequency generating circuit for generating a frequency signal corresponding to a revolution speed of a drum motor, a cycle detector circuit for detecting a cycle of the frequency signal from the frequency generating circuit, a detector circuit for detecting a speed deviation between a detected signal from the detector circuit and a reference signal to produce a speed deviation signal, a first circuit for generating a first rotation control signal based on the speed deviation signal, a second circuit for producing a second rotation control signal based on phase difference data obtained by integrating the speed deviation signal and an adder circuit for adding the first and second rotation control signals to produce a rotation control signal which is supplied to the drum motor to stably rotate the rotary head drum.
-
公开(公告)号：AU627992B2
公开(公告)日：1992-09-03
申请号：AU7533291
申请日：1991-04-23
Applicant: SONY CORP
Inventor： MACHIDA YUKIHIKO , TOMITAKA TADAFUSA
Abstract: A motor rotation control apparatus employs a comb filter circuit (10) to filter out a signal component and its higher harmonics. An error signal (DS) indicative of an error between actual and target conditions of rotation of the motor is applied to the comb filter circuit (10) after a direct current component thereof is removed. The filtered signal and the error signal are added in a circuit (90) which produces a control signal used to control rotation of the motor (50). Predetermined successive portions (samples) of the error signal are each divided into a first digital signal portion having a predetermined number of upper bits of data and a second digital signal portion having the remaining lower bits of data. The lower bits are delayed a predetermined time and added to the error signal to compensate for lower bits of data which may be ignored in a digital-to-analog converter, operable on a limited number of bits, to provide an analog control signal used to control rotation of the motor.
-
公开(公告)号：DE69626375T2
公开(公告)日：2003-12-04
申请号：DE69626375
申请日：1996-12-13
Applicant: SONY CORP
Inventor： KOYANAGI MASAKAZU , TOMITAKA TADAFUSA , SUITO TARO , HOSONUMA NAOYASU
Abstract: A motion detection apparatus for detecting motion of an inputted image includes a reference image memory (14) for storing the image as a reference image to be used for detection of motion, updating means (13) for periodically updating the reference image stored in the reference image memory (14), and a current image memory (12) for storing an image inputted at the present time as a current image. Motion detection means (18-23) compares the current image stored in the current image memory (12) with the reference image stored in the reference image memory (14) and detects motion of the image based on the result of the comparison. A dead zone processing section (24) extends the interval within which motion of the image is detected by the motion detection means (18-23) by a predetermined extension time.
-
公开(公告)号：DE69522197T2
公开(公告)日：2002-05-02
申请号：DE69522197
申请日：1995-12-29
Applicant: SONY CORP
Inventor： KOYANAGI MASAKAZU , TOMITAKA TADAFUSA
Abstract: A video camera system and method is capable of automatically controlling the exposure of a desired object image. A plurality of average luminance values (S7, S8, S9) are respectively determined by a plurality of light measurement units (12, 9, 10). A plurality of reference luminance values (S10, S11) are obtained from a plurality of reference value circuits (13, 14). Selected ones of the average luminance values (S7, S8, S9) and the reference luminance values (S10, S11) are utilized to form control signals (S14). The control signals (S14) control a lens block section (50) of the video camera so as to maintain proper exposure of the desired object.
-
-
-
-
-
-
-
-
-
Search Results
163
records
(took 0.024 seconds)
