WIPO logo
Mobile | Deutsch | Español | Français | 日本語 | 한국어 | Português | Русский | 中文 | العربية |
PATENTSCOPE

Search International and National Patent Collections
World Intellectual Property Organization
Options
Query Language
Stem
Sort by:
List Length
Some content of this application is unavailable at the moment.
If this situation persist, please contact us atFeedback&Contact
1. (WO1990004311) APPARATUS FOR COMBINING AND SEPARATING COMPONENTS OF A VIDEO SIGNAL
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/1990/004311 International Application No.: PCT/US1989/003328
Publication Date: 19.04.1990 International Filing Date: 07.08.1989
Chapter 2 Demand Filed: 17.04.1990
IPC:
H04N 9/78 (2006.01) ,H04N 11/24 (2006.01)
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
9
Details of colour television systems
77
Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase
78
for separating the brightness signal or the chrominance signal from the colour television signal, e.g. using comb filter
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
11
Colour television systems
24
High-definition television systems
Applicants: GENERAL ELECTRIC COMPANY[US/US]; CN5312 Princeton, NJ 08540, US
Inventors: ISNARDI, Michael, Anthony; US
Agent: TRIPOLI, Joseph, S. ; GE & RCA Licensing Management Operation Inc. CN 5312 Princeton, NJ 08540, US
HAYES, James, B.; GE and RCA Licensing Management Operation, Inc. Patent Operation, CN5312 Princeton, NJ 08540, US
Priority Data:
253,27303.10.1988US
Title (EN) APPARATUS FOR COMBINING AND SEPARATING COMPONENTS OF A VIDEO SIGNAL
(FR) APPAREIL DE COMBINAISON ET DE SEPARATION DE COMPOSANTES D'UN SIGNAL VIDEO
Abstract:
(EN) The luminance component of a video signal is processed (12, 16, 18, 20, 21, 32) to produce a luminance component with groups of mutually exclusive spatially correlated image pixels of identical value within each group. In one embodiment each group comprises vertically averaged pixels 1H apart within a field. In another embodiment each group comprises vertically averaged pixels 263H apart within a frame. The chrominance component is similarly processed (22, 24, 26, 29). The processed luminance and chrominance components are combined (33) using an invertible algorithm involving additive and subtractive signal combination. At a decoder, the inverse of the combining algorithm is used (40, 42, 44, 46, 48) to separate the combined signal into its constituent luminance and chrominance component parts, without luminance-chrominance crosstalk.
(FR) La composante de luminance d'un signal vidéo est traitée (12, 16, 18, 20, 21, 32) afin de produire une composante de luminance comportant des groupes de pixels d'images en corrélation spaciale mutuellement exclusifs, de valeur identique dans chaque groupe. Dans un mode de réalisation, chaque groupe comprend des pixels dont on a établi une moyenne verticale d'espacement 1H dans un champ. Dans un autre mode de réalisation, chaque groupe comprend des pixels dont on a établi une moyenne verticale d'espacement de 263H dans une image. La composante de chrominance est traitée (22, 24, 26, 29) de manière similaire. On combine (33) les composantes de luminance et de chrominance à l'aide d'un algorithme inversable mettant en ÷uvre une combinaison de signaux d'addition et de soustraction. Au niveau d'un décodeur, on utilise (40, 42, 44, 46, 48) l'inverse de l'algorithme de combinaison pour séparer le signal combiné dans ses parties composantes de luminance et de chrominance constitutives, sans parasite entre la luminance et la chrominance.
Designated States: AU, DK, FI, JP, KR
European Patent Office (EPO) (AT, BE, CH, DE, FR, GB, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)