SE8200281L - AUTOMATIC PICTURE PRESSURE CONTROL DEVICE WITH DIGITAL SIGNAL PROCESSING - Google Patents

AUTOMATIC PICTURE PRESSURE CONTROL DEVICE WITH DIGITAL SIGNAL PROCESSING

Info

Publication number
SE8200281L
SE8200281L SE8200281A SE8200281A SE8200281L SE 8200281 L SE8200281 L SE 8200281L SE 8200281 A SE8200281 A SE 8200281A SE 8200281 A SE8200281 A SE 8200281A SE 8200281 L SE8200281 L SE 8200281L
Authority
SE
Sweden
Prior art keywords
cathode
signal processing
induced
black
level
Prior art date
Application number
SE8200281A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE451780B (en
Inventor
W Hinn
Original Assignee
Rca Corp
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
Priority claimed from US06/295,118 external-priority patent/US4387405A/en
Application filed by Rca Corp filed Critical Rca Corp
Publication of SE8200281L publication Critical patent/SE8200281L/en
Publication of SE451780B publication Critical patent/SE451780B/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/16—Picture reproducers using cathode ray tubes
    • H04N9/18—Picture reproducers using cathode ray tubes using separate electron beams for the primary colour signals
    • H04N9/20—Picture reproducers using cathode ray tubes using separate electron beams for the primary colour signals with more than one beam in a tube

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Processing Of Color Television Signals (AREA)
  • Picture Signal Circuits (AREA)
  • Transforming Light Signals Into Electric Signals (AREA)
  • Transforming Electric Information Into Light Information (AREA)

Abstract

RCA 75,602 Apparatus is disclosed in a video signal processing system for automatically monitoring and controlling the blanking (black) current level of an image reproducing kinescope. A kinescope cathode output signal proportional to the level of cathode black level current conduction is induced during periodic monitoring intervals during which image signals are absent. The cathode signal is induced in response to a grid drive pulse applied during the monitoring intervals. The induced cathode signal is processed by a digital signal processing network to produce incremental bias control voltage steps for modifying the cathode bias, if necessary, in a direction to produce a desired cathode black current level. In addition, there is disclosed a special form of grid drive pulse which serves to prevent system "hunting" in the vicinity of the correct cathode bias.
SE8200281A 1981-01-26 1982-01-19 AUTOMATIC PICTURE PRESSURE CONTROL DEVICE WITH DIGITAL SIGNAL PROCESSING SE451780B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8102271 1981-01-26
US06/295,118 US4387405A (en) 1971-01-26 1981-08-21 Automatic kinescope bias control system with digital signal processing

Publications (2)

Publication Number Publication Date
SE8200281L true SE8200281L (en) 1982-07-27
SE451780B SE451780B (en) 1987-10-26

Family

ID=26278222

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8200281A SE451780B (en) 1981-01-26 1982-01-19 AUTOMATIC PICTURE PRESSURE CONTROL DEVICE WITH DIGITAL SIGNAL PROCESSING

Country Status (10)

Country Link
AT (1) AT384923B (en)
AU (1) AU542353B2 (en)
CA (1) CA1175562A (en)
DE (1) DE3202396C2 (en)
ES (1) ES508857A0 (en)
FI (1) FI73107C (en)
FR (1) FR2498864B1 (en)
HK (1) HK19487A (en)
IT (1) IT1151702B (en)
SE (1) SE451780B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4521811A (en) * 1984-05-02 1985-06-04 Rca Corporation Beam current limiting arrangement for a digital television system
US4641194A (en) * 1984-08-27 1987-02-03 Rca Corporation Kinescope driver in a digital video signal processing system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3670100A (en) * 1971-03-29 1972-06-13 Telemation Automatic reference level set for television cameras
US4263622A (en) * 1979-01-30 1981-04-21 Rca Corporation Automatic kinescope biasing system
US4277798A (en) * 1979-04-18 1981-07-07 Rca Corporation Automatic kinescope biasing system with increased interference immunity

Also Published As

Publication number Publication date
FI820159L (en) 1982-07-27
FI73107B (en) 1987-04-30
ES8303868A1 (en) 1983-02-01
HK19487A (en) 1987-03-13
DE3202396C2 (en) 1985-07-18
DE3202396A1 (en) 1982-10-07
FR2498864A1 (en) 1982-07-30
CA1175562A (en) 1984-10-02
AU7962682A (en) 1982-08-05
FR2498864B1 (en) 1988-06-10
FI73107C (en) 1987-08-10
AU542353B2 (en) 1985-02-21
ES508857A0 (en) 1983-02-01
IT1151702B (en) 1986-12-24
AT384923B (en) 1988-01-25
IT8219284A0 (en) 1982-01-25
SE451780B (en) 1987-10-26
ATA26982A (en) 1987-06-15

Similar Documents

Publication Publication Date Title
ES488069A1 (en) Automatic kinescope biasing system
AU551349B2 (en) Conversion of video signals to photographic prints
ES469495A1 (en) Brightness control circuit employing a closed control loop
ES8503193A1 (en) Video signal processor with automatic kinescope white balance and beam current limiter control systems
SE8002754L (en) AUTOMATIC PICTURE PRESSURE DEVICE WITH IMPROVED TROUBLE IMMUNITY
GB1049641A (en) Circuit arrangement for varying the contrast of a television picture
ES8405572A1 (en) Manually gain presettable kinescope driver in an automatic kinescope bias control system
SE8200281L (en) AUTOMATIC PICTURE PRESSURE CONTROL DEVICE WITH DIGITAL SIGNAL PROCESSING
ES8100589A1 (en) Predictable automatic brightness control circuit in a video signal image reproducing system
ES8103900A1 (en) Stabilized automatic brightness control network in a video signal processing system including an automatic kinescope beam current limiter
SE8501012D0 (en) VIDEO SIGNAL PROCESSOR WITH AUTOMATIC PICTURE FLOW RESTRICTOR
ES8405224A1 (en) Kinescope black level current sensing apparatus
US3445590A (en) Coordinated sensitivity and amplification control system
GB1211396A (en) Automatic dark current control system for pickup tubes
SE7900953L (en) AUTOMATIC RADIUM CURRENT LIMITER IN A VIDEO SIGNAL PROCESSING SYSTEM
ES488075A1 (en) Predictably biased kinescope driver arrangement in a video signal processing system
US4694334A (en) Pyroelectric camera signal processing having pedestal signal level compensation
MY121947A (en) Automatic kinescope bias control system
US3368033A (en) Video signal processing system
JPS53126817A (en) Level controller of video signal
JPS5549079A (en) Recording and reproducing device for video format signal
JPH073731Y2 (en) Automatic contrast adjustment device for video cameras
JPS55137783A (en) Television camera unit
JPS57164669A (en) Automatic beam controlling method for image pickup tube
JPS5425620A (en) Automatic chroma control system using video pilot signal

Legal Events

Date Code Title Description
NAL Patent in force

Ref document number: 8200281-7

Format of ref document f/p: F

NUG Patent has lapsed

Ref document number: 8200281-7

Format of ref document f/p: F