[go: up one dir, main page]

JPS645287A - Auto-white balance device - Google Patents

Auto-white balance device

Info

Publication number
JPS645287A
JPS645287A JP62163247A JP16324787A JPS645287A JP S645287 A JPS645287 A JP S645287A JP 62163247 A JP62163247 A JP 62163247A JP 16324787 A JP16324787 A JP 16324787A JP S645287 A JPS645287 A JP S645287A
Authority
JP
Japan
Prior art keywords
signal
gain control
field period
integrating
output
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP62163247A
Other languages
Japanese (ja)
Other versions
JP2547215B2 (en
Inventor
Hideaki Yoshida
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Olympus Corp
Original Assignee
Olympus Optical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP62163247A priority Critical patent/JP2547215B2/en
Publication of JPS645287A publication Critical patent/JPS645287A/en
Application granted granted Critical
Publication of JP2547215B2 publication Critical patent/JP2547215B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Processing Of Color Television Signals (AREA)

Abstract

PURPOSE:To obtain the highly speedy and stable responsiveness of a gain control by providing a gain control transmitting element to transmit a color signal, the color signal integrating means of an input side and a gain holding means to keep the gain control signal of an obtained level stationary and to supply it to the gain control transmitting element. CONSTITUTION:The signal of a first field period f1 is inputted through analog switches 8 and 9 to gain control amplifiers GCA 4 and 5. In a vertical blanking period B2, when the integrating output value of R and B signals of the f1 passes through the GCAs 4 and 5, this value is feedback controlled so as to be matched to the integrating output value of a C signal. The output signal is controlled so as to be the almost same level as the output of a G signal line 2. Samely, as for an image signal after a field period f2, based on the color signal of a preceding field period, a white balance control is executed. Thus, since an delaying element is not included to a feedback loop, a response is speedy and stability is satisfactory.
JP62163247A 1987-06-29 1987-06-29 Auto white balance device Expired - Fee Related JP2547215B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62163247A JP2547215B2 (en) 1987-06-29 1987-06-29 Auto white balance device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62163247A JP2547215B2 (en) 1987-06-29 1987-06-29 Auto white balance device

Publications (2)

Publication Number Publication Date
JPS645287A true JPS645287A (en) 1989-01-10
JP2547215B2 JP2547215B2 (en) 1996-10-23

Family

ID=15770154

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62163247A Expired - Fee Related JP2547215B2 (en) 1987-06-29 1987-06-29 Auto white balance device

Country Status (1)

Country Link
JP (1) JP2547215B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016003958A1 (en) 2015-04-03 2016-10-06 Hirata Corporation Processing method, manufacturing method and positioning device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016003958A1 (en) 2015-04-03 2016-10-06 Hirata Corporation Processing method, manufacturing method and positioning device

Also Published As

Publication number Publication date
JP2547215B2 (en) 1996-10-23

Similar Documents

Publication Publication Date Title
JPS53106520A (en) Memory type gain controller
JPS56169986A (en) Automatic white color adjusting circuit in television camera
ES448125A1 (en) Gain control arrangement useful in a television signal processing system
KR900002985B1 (en) Automatic gain control circuit
JPS645287A (en) Auto-white balance device
JPS52134982A (en) Control system
EP0251530A3 (en) Improvements relating to amplifier gain control circuit arrangements
DE3477452D1 (en) Circuit arrangement for a digital level control
ES8306949A1 (en) Signal gain control with DC compensation
SE7711847L (en) AUTOMATIC CHROMINANCE REINFORCEMENT SYSTEM SYSTEM
JPS6117193B2 (en)
JPS6460088A (en) Automatic white balance control circuit
GB1512149A (en) Colour television
JPS56141689A (en) Color stabilizing equipment
JPS57138280A (en) Color image pickup device
JPS56169973A (en) Automatic gain controlling device
MY129300A (en) Automatic chroma control circuit with controlled saturation reduction
JPS6460090A (en) Automatic white balance control circuit
JPS55163970A (en) Color solid-state pickup unit
JPS5690688A (en) Automatic white balance circuit of color television camera
JPS536553A (en) Variable gain amplifier
JPS6423688A (en) Automatic gain control circuit
JPS6437190A (en) White balance setting circuit
JPS56169443A (en) Detecting circuit for input signal interruption
JPS6455996A (en) Image pickup device

Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees