Patent EP0558338A2 successfully refreshed from Google Patents.
EP0558338A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Video camera
Assignee: Sony Corp
•
Filing: 1993-02-26
•
Granted: —
•
Expires: 2013-02-26
Abstract
Abstract In a video camera having three image pickup devices 1, 2, 3 in which a pixel G of one channel of channels forming three primary colours is spatially displaced from other pixels R, B of two channels by 1/2 pixel, when three primary colour signals output from the three image pickup devices are converted into digital three primary colour signals G, R, B, an aperture signal DTL is formed from the digital three primary colour signals, the aperture signal output is added to the digital three primary colour signals and a digital video signal Y₁. Y₂, R-Y, B-Y of a predetermined format is formed from the added signal, a clock frequency (36MHz) of an aperture signal forming circuit 30 is set to be twice the clock frequencies of the image pickup devices, an A/D converting circuit 7, 8, 9 and a video signal forming circuit.
Inventors
- 👤 Hideaki c/o Sony Corporation Murayama
- 👤 Taku c/o Sony Corporation Kihara
- 👤 Fumihiko C/O Sony Corporation Sudo
- 👤 Takashi C/O Sony Corporation Asaida
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 20:41
CPC Classifications
H; H04; H04N; H04N23/00; H04N23/80; H04N23/84; H04N23/843; H04N25/00; H04N25/10; H04N25/11; H04N25/13; H04N25/135; H04N25/136; H04N2209/00; H04N2209/04; H04N2209/041; H04N2209/042; H04N2209/045; H04N2209/046
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
167 words
A video camera having three image pickup devices in which a pixel of one channel of channels forming three primary colors is spatially displaced from other pixels of two channels by 1/2 pixel, comprising: an analog-to-digital (A/D) converting means for converting analog three primary color signals output from said three image pickup devices into digital three primary color signals; aperture signal forming means supplied with output signals of said A/D converting means and forming an aperture signal from said digital three primary color signals; adding means for adding said aperture signal output from said aperture signal forming means and said digital three primary color signals output from said A/D converting means; and video signal forming means for forming a digital video signal of a predetermined format from a signal output from said adding means, wherein a clock frequency of said aperture signal forming means is set to be twice the clock frequencies of said image pickup devices, said A/D converting means and said video signal forming means.
Claim 2
Dependent Claim
36 words
The video camera according to claim 1, wherein said three image pickup devices are a first CCD (charge-coupled device) for red color, a second CCD for green color and a third CCD for blue color, respectively.
Claim 3
Dependent Claim
52 words
The video camera according to claim 1, wherein said three image pickup devices are a first CCD for red color, a second CCD for green color and a third CCD for blue color, respectively, and said aperture signal forming means forms said aperture signal from outputs of said first and second CCDs.
Claim 4
Dependent Claim
46 words
The video camera according to claim 1, wherein the clock frequency of said aperture signal forming means is 36 MHz and the clock frequencies of said image pickup devices, said A/D converting means, said adding means and said video signal forming means are 18 MHz, respectively.
Claim 5
Dependent Claim
196 words
A video camera having three image pickup devices in which a pixel of one channel of channels forming three primary colors is spatially displaced from other pixels of two channels by 1/2 pixel, comprising: an analog-to-digital (A/D) converting means for converting analog three primary color signals output from said three image pickup devices into digital three primary color signals; aperture signal forming means supplied with output signals of said A/D converting means and forming an aperture signal from said digital three primary color signals; first adding means for adding said aperture signal output from said aperture signal forming means and said digital three primary color signals output from said A/D converting means; forming means for forming color difference signals and a first luminance signal on the basis of an output signal of said first adding means; and said adding means for adding said aperture signal to said first luminance signal output from said forming means to form a second luminance signal, wherein clock frequencies of said aperture signal forming means and said second adding means are set to be twice the clock frequencies of said image pickup devices, said A/D converting means and said forming means.
Claim 6
Dependent Claim
39 words
The video camera according to claim 5, further comprising second forming means supplied with an output signal of said second adding means and said color difference signals output from said forming means to form a digital composite video signal.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.