GB1383590A – Automatic registration of colour television cameras
– Google Patents
GB1383590A – Automatic registration of colour television cameras
– Google Patents
Automatic registration of colour television cameras
Info
Publication number
GB1383590A
GB1383590A
GB2203172A
GB2203172A
GB1383590A
GB 1383590 A
GB1383590 A
GB 1383590A
GB 2203172 A
GB2203172 A
GB 2203172A
GB 2203172 A
GB2203172 A
GB 2203172A
GB 1383590 A
GB1383590 A
GB 1383590A
Authority
GB
United Kingdom
Prior art keywords
polarity
positive
negative
supplied
video signals
Prior art date
1971-05-17
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.)
Expired
Application number
GB2203172A
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.)
RCA Corp
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.)
1971-05-17
Filing date
1972-05-11
Publication date
1974-02-12
1972-05-11
Application filed by RCA Corp
filed
Critical
RCA Corp
1974-02-12
Publication of GB1383590A
publication
Critical
patent/GB1383590A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
H—ELECTRICITY
H04—ELECTRIC COMMUNICATION TECHNIQUE
H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
H04N23/10—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from different wavelengths
H04N23/13—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from different wavelengths with multiple sensors
H04N23/15—Image signal generation with circuitry for avoiding or correcting image misregistration
Abstract
1383590 Colour television RCA CORPORATION 11 May 1972 22031/72 Heading H4F Automatic registration of two pick-up tubes of a colour television camera is effected by deriving a deflection control signal for one of the tubes from an indicator signal denoting the time relationship of corresponding edge video signals representing a sharp transition between light and dark areas in the televised scene. As shown in Fig. 3, edge video signals 34 and 35 from the green and red (or blue) pick-up tubes are processed via 1À46 Ás delays 37, 41 and 47, 0À73 Ás delay 44, amplifier 38 which doubles the edge signal amplitude and reverses its polarity, and polarity reversers 45 and 54 to thereby derive a predominantly positive polarity wave 58 and a predominantly negative polarity wave 53 which are supplied to a common output terminal 64 via a negative peak detector 59 and a positive peak detector 62 so as to produce an indicator signal having a polarity that indicates the sense of any time non-coincidence of the red and green edge video signals and an amplitude representative of the magnitude of any time non-coincideuce. This indicator signal is supplied to a positive comparator 65 and a negative comparator 66, Fig. 4, which are also supplied with respective positive and negative comparison voltages from a voltage divider 67. If the indicator signal is greater or less than the respective comparison voltages NAND gates 68 or 69 are activated to pass pulses from a generator 71 to the “up” or “down” control terminals respectively of a counter 72 from which the deflection control signal for the red (or blue) pickup tube is derived. The offsetting of the action of comparators 65 and 66 by the different comparison voltages produces a small dead zone in which small indicator signals produce no change of the deflection control signal. In a second embodiment, Fig. 8, the predominantly positive and negative polarity waves 89 and 95 are derived from the red and green edge video signals 35a and 34a by means of integrators 75, 76, 78, 82, 83 and 85, differentiators 77, 79 and 84 and polarity inverter 91. These signals are then supplied via positive and negative peak detectors 96 and 99 to produce at common output terminal 64 the indicator signal which is supplied to the circuit of Fig. 4, to thereby derive the deflection control signal. An alternate or auxiliary indicator signal may be provided at terminal 64a via negative and positive peak detectors 97 and 98. The image areas of the pick-up tubes are effectively divided into nine zones, the deflection control signal derived from the central zone V, Fig. 1, in response to gated video signals from this zone, is used to effect horizontal and vertical centering of the raster scans; from zones IV and VI horizontal size (width), linearity and raster skew correction; and from zones II and VIII vertical size (height) and linearity correction.
GB2203172A
1971-05-17
1972-05-11
Automatic registration of colour television cameras
Expired
GB1383590A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
US14379471A
1971-05-17
1971-05-17
Publications (1)
Publication Number
Publication Date
GB1383590A
true
GB1383590A
(en)
1974-02-12
Family
ID=22505673
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB2203172A
Expired
GB1383590A
(en)
1971-05-17
1972-05-11
Automatic registration of colour television cameras
Country Status (8)
Country
Link
US
(1)
US3692918A
(en)
JP
(1)
JPS526128B1
(en)
AU
(1)
AU459316B2
(en)
CA
(1)
CA967280A
(en)
DE
(1)
DE2224143C3
(en)
FR
(1)
FR2138043B1
(en)
GB
(1)
GB1383590A
(en)
NL
(1)
NL7206584A
(en)
Families Citing this family (13)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB1375645A
(en)
*
1972-08-25
1974-11-27
NL7401243A
(en)
*
1974-01-30
1975-08-01
Philips Nv
PROCEDURE FOR POSITIONING LINE SCAN RS IN A COLOR TELEVISION ROOM AND DEVICE SUITABLE HERE.
JPS54109071U
(en)
*
1978-01-20
1979-08-01
DE2852213C3
(en)
*
1978-12-02
1981-11-05
Grundig E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig & Co KG, 8510 Fürth
Method for automatic convergence adjustment for a color television camera
JPS5650685A
(en)
*
1979-09-29
1981-05-07
Sony Corp
Multi-tube type image pickup device
JPS57124984A
(en)
*
1981-01-28
1982-08-04
Hitachi Ltd
Color image pickup device
JPS587991A
(en)
*
1981-07-08
1983-01-17
Sony Corp
Registration adjusting circuit for multitube color camera
US4500916A
(en)
*
1982-04-05
1985-02-19
Panavision, Inc.
Automatic on-air registration system and method for color TV camera
US4499488A
(en)
*
1983-02-03
1985-02-12
Harris Corporation
Automatic registration control system for color television cameras
JPS6068779A
(en)
*
1983-09-22
1985-04-19
Sony Corp
Automatic control circuit of video camera
JP2606185B2
(en)
*
1985-06-17
1997-04-30
ソニー株式会社
Method for measuring registration of solid-state image sensor
US7932196B2
(en)
*
2003-08-22
2011-04-26
Kimberly-Clark Worldwide, Inc.
Microporous stretch thinned film/nonwoven laminates and limited use or disposable product applications
US20070251522A1
(en)
*
2006-05-01
2007-11-01
Welchel Debra N
Respirator with exhalation vents
Family Cites Families (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB1266336A
(en)
*
1968-08-13
1972-03-08
1971
1971-05-17
US
US143794A
patent/US3692918A/en
not_active
Expired – Lifetime
1972
1972-04-25
CA
CA140,589A
patent/CA967280A/en
not_active
Expired
1972-05-11
GB
GB2203172A
patent/GB1383590A/en
not_active
Expired
1972-05-16
AU
AU42321/72A
patent/AU459316B2/en
not_active
Expired
1972-05-16
NL
NL7206584A
patent/NL7206584A/xx
not_active
Application Discontinuation
1972-05-17
DE
DE2224143A
patent/DE2224143C3/en
not_active
Expired
1972-05-17
FR
FR7217664A
patent/FR2138043B1/fr
not_active
Expired
1972-05-17
JP
JP47049035A
patent/JPS526128B1/ja
active
Pending
Also Published As
Publication number
Publication date
DE2224143C3
(en)
1975-10-02
DE2224143B2
(en)
1975-02-20
JPS526128B1
(en)
1977-02-19
AU459316B2
(en)
1975-03-20
DE2224143A1
(en)
1972-11-30
FR2138043A1
(en)
1972-12-29
CA967280A
(en)
1975-05-06
AU4232172A
(en)
1973-11-22
NL7206584A
(en)
1972-11-21
FR2138043B1
(en)
1977-01-14
US3692918A
(en)
1972-09-19
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Legal Events
Date
Code
Title
Description
1975-06-25
PS
Patent sealed [section 19, patents act 1949]
1981-01-21
PCNP
Patent ceased through non-payment of renewal fee
