EP0456414A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Slant correction for a video camera apparatus
Assignee: Panasonic Holdings Corp
•
Filing: 1991-05-02
•
Granted: —
•
Expires: 2011-05-02
Abstract
Abstract The slant amount of the entire video camera apparatus to the vertical direction is detected by the slant detector by detecting the horizontal and vertical signal quantity detection or by the mechanical vertical direction detecting means, and the memory control means reads out the video signal while controlling the address of the memory means so as to correct the slant of the video signal stored in the memory device depending on the slant amount, and since the memory device is composed of two systems of memory means, so that the slant may be always corrected in real time in moving picture, thereby presenting a stable video output. <IMAGE>
Inventors
- 👤 Masayki Yoneyama
- 👤 Ryuichiro Kuga
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 10:13
CPC Classifications
H; H04; H04N; H04N23/00; H04N23/60; H04N23/68; H04N23/681; H04N23/6811; H04N23/682; H04N23/683; H04N23/80; H04N23/81
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
72 words
A video camera apparatus comprising a slant detector, a memory device having at least two memories, and a memory control unit, in which a reading address to be applied to the memory device is calculated in the memory control unit according to slant information with respect to the vertical direction of the video camera apparatus detected by a slant detector, and a video signal corrected of slant in real time is delivered.
Claim 2
Dependent Claim
21 words
A video camera apparatus according to claim 1, wherein the slant detector comprises a gyro mechanism or mechanical vertical direction detector.
Claim 3
Dependent Claim
43 words
A video camera apparatus according to claim 1, wherein the slant detector is a slant detector for delivering the slant information so that either a horizontal signal or a vertical signal, or both the horizontal signal and the vertical signal may be maximum.
Claim 4
Dependent Claim
105 words
A slant detector comprising a horizontal signal detector, a vertical signal detector, a first wave detector, a second wave detector, and a control signal generator, wherein the input signal is fed into the horizontal signal detector and the vertical signal detector, the horizontal signal component detected by the horizontal signal detector is detected of the horizontal signal quantity by the first wave detector and fed into the control signal generator, and the vertical signal component detected by the vertical signal detector is detected of the vertical signal quantity by the second wave detector and fed into the control signal generator, thereby delivering the slant information.
Claim 5
Dependent Claim
161 words
A video camera apparatus comprising: an imaging means for converting an image of an object formed by light from an object to a video signal; a memory means having two memories each changing its operating mode at predetermined intervals between a write mode in which the video signal is written into the memory and a read mode in which the video signal written in the memory is read out, each of the two memories being in one of the write mode and the read mode when the other of the two memories is in the other of the write mode and the read mode; a detecting means for detecting a positional slant of the image and producing a detection signal indicative of the positional slant; and a memory control means responsive to said detection signal for controlling a read operation of each of the two memories in the read mode so as to compensate for the positional slant of the image.
Claim 6
Dependent Claim
33 words
A video camera apparatus according to claim 5, wherein said detecting means comprises a means for detecting a positional slant of a body of said apparatus relative to a direct ion of gravity.
Claim 7
Dependent Claim
63 words
A video camera apparatus according to claim 5, wherein said detecting means comprises a means for detecting a quantity of a horizontal signal component of the video signal, a means for detecting a quantity of a vertical signal component of the video signal, and means for detecting a positional slant of the image from the quantities of the horizontal and vertical signal components.
Claim 8
Dependent Claim
31 words
A video camera apparatus according to claim 5, wherein each of said two memories comprises a field memory which changes the write mode and the read mode at vertical scanning intervals.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.