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1. (WO1997019561) METHOD AND APPARATUS FOR MULTIPLEXING VIDEO PROGRAMS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/019561 International Application No.: PCT/US1996/017990
Publication Date: 29.05.1997 International Filing Date: 08.11.1996
Chapter 2 Demand Filed: 19.06.1997
IPC:
H04N 7/173 (2006.01) ,H04N 7/58 (2006.01)
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
7
Television systems
16
Analogue secrecy systems; Analogue subscription systems
173
with two-way working, e.g. subscriber sending a programme selection signal
(Deprecated)
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
7
Television systems
24
Systems for the transmission of television signals using pulse code modulation
52
Systems for transmission of a pulse code modulated with one or more other pulse code modulated signals, e.g. an audio signal or a synchronizing signal
58
involving more than one video signal
Applicants:
IMEDIA CORPORATION [US/US]; Suite 2850 425 Market Street San Francisco, CA 94105, US
Inventors:
SHEN, Paul; US
KRAUSE, Edward, A.; US
TOM, Adam, S.; US
Agent:
HARTOGS, Michael, D. ; McCutchen, Doyle, Brown & Enersen Three Embarcadero Center San Francisco, CA 94111, US
FIENER, Josef,; Maximilianstrasse 57 Postfach 12 49 D-87712 Mindelheim, DE
Priority Data:
08/560,21921.11.1995US
Title (EN) METHOD AND APPARATUS FOR MULTIPLEXING VIDEO PROGRAMS
(FR) PROCEDE ET DISPOSITIF POUR MULTIPLEXER LES PROGRAMMES VIDEO
Abstract:
(EN) A method and apparatus for multiplexing several encoded program streams into a single multiplex suitable for transmission over a data channel, the streams typically including video and audio. According to one embodiment of the invention, high data channel utilization is achieved by determining the order of sending data packets of program streams into the data channel. According to this embodiment, whenever data is to be sent into the data channel, a determination is made of which packet to send or append to the multiplex, said determination by selecting a channel that has a decoder buffer that is not approaching a full state, and said next packet is appended to said multiplex. The method further includes selecting a channel that substantially balances the decoder buffers of the decoders with which the program streams are decodeable.
(FR) Procédé et dispositif permettant de multiplexer plusieurs trains d'émissions codées de façon à constituer un signal multiplex unique qui peut être transmis par un canal de données, les trains comprenant typiquement des données vidéo et audio. Dans l'un des modes de réalisation, on parvient à une utilisation élevée des canaux de données en déterminant l'ordre d'émission des paquets de données des trains d'émissions dans les canaux de données. Quel que soit le moment où les données doivent être envoyées dans le canal de données, on détermine le paquet à envoyer ou à adjoindre au multiplex en sélectionnant un canal dont le tampon de décodage n'est pas près d'être saturé, et on adjoint ledit paquet suivant audit multiplex. Le procédé comprend en outre la sélection d'un canal capable d'équilibrer substantiellement les tampons de décodage des décodeurs qui permettent de décoder les trains d'émissions.
Designated States: AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE, HU, IL, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, TJ, TM, TR, TT, UA, UG, UZ, VN
African Regional Intellectual Property Organization (ARIPO) (KE, LS, MW, SD, SZ, UG)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0862837JP2000500634CA2237689AU1996077252