Video teleconferencing system with digital transcoding
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H04L-012/16
H04Q-011/00
출원번호
US-0343614
(1999-06-30)
발명자
/ 주소
Polomski, Mark D.
출원인 / 주소
Tandberg Telecom AS
대리인 / 주소
Hamilton, Brook, Smith & Reynolds, P.C.
인용정보
피인용 횟수 :
56인용 특허 :
21
초록▼
A video teleconferencing system uses digital transcoding to obtain algorithm transcoding, transmission rate matching, and spatial mixing. The video teleconferencing system comprises a multipoint control unit (MCU) for allowing multiple audiovisual terminals, which send and receive compressed digital
A video teleconferencing system uses digital transcoding to obtain algorithm transcoding, transmission rate matching, and spatial mixing. The video teleconferencing system comprises a multipoint control unit (MCU) for allowing multiple audiovisual terminals, which send and receive compressed digital data signals, to communicate with each other in a conference. The MCU has a video processing unit (VPU) that performs algorithm transcoding, rate matching, and spatial mixing among the terminals within a conference. The VPU includes a time division multiplex pixel bus and a plurality of processors. Each processor is assignable to an audiovisual terminal in the conference and is coupled to the pixel bus. In a receive mode, each processor receives and decodes compressed video signals from its assigned terminal and puts the decoded signal onto the pixel bus. In a transmit mode, each processor receives from the pixel bus uncompressed video signals from any terminal in the conference. The uncompressed video signals are processed and encoded for transmission to the respective assigned terminal. Video encoding time due to motion displacement search is reduced by passing displacement information from the compressed video signals to the encoder to be used directly or as a seed for further refinements of the motion displacement field.
대표청구항▼
A video teleconferencing system uses digital transcoding to obtain algorithm transcoding, transmission rate matching, and spatial mixing. The video teleconferencing system comprises a multipoint control unit (MCU) for allowing multiple audiovisual terminals, which send and receive compressed digital
A video teleconferencing system uses digital transcoding to obtain algorithm transcoding, transmission rate matching, and spatial mixing. The video teleconferencing system comprises a multipoint control unit (MCU) for allowing multiple audiovisual terminals, which send and receive compressed digital data signals, to communicate with each other in a conference. The MCU has a video processing unit (VPU) that performs algorithm transcoding, rate matching, and spatial mixing among the terminals within a conference. The VPU includes a time division multiplex pixel bus and a plurality of processors. Each processor is assignable to an audiovisual terminal in the conference and is coupled to the pixel bus. In a receive mode, each processor receives and decodes compressed video signals from its assigned terminal and puts the decoded signal onto the pixel bus. In a transmit mode, each processor receives from the pixel bus uncompressed video signals from any terminal in the conference. The uncompressed video signals are processed and encoded for transmission to the respective assigned terminal. Video encoding time due to motion displacement search is reduced by passing displacement information from the compressed video signals to the encoder to be used directly or as a seed for further refinements of the motion displacement field. 1. A method for providing remote configuration of a client premise equipment, comprising the steps of: creating a temporary management ATM virtual circuit between a remote Point-to-Point Protocol server and the client premise equipment via an ATM network; assigning a temporary Internet Protocol address to the client premise equipment using Point-to-Point Protocol over ATM; telneting from the Point-to-Point Protocol server to the temporary Internet Protocol address of the client premise equipment; and downloading client premise equipment configuration from the Point-to-Point Protocol server to the client premise equipment wherein the client premise equipment configuration includes a permanent client premise equipment Internet Protocol address different from the temporary Internet Protocol address. 2. The method for providing remote configuration of a client premise equipment of claim 1, wherein said temporary management ATM virtual circuit is selected from the group consisting of a permanent virtual circuit and a switch virtual circuit. 3. The method for providing remote configuration of a client premise equipment of claim 1, further comprising requesting the temporary Internet Protocol address from the Point-to-Point Protocol server by the client premise equipment prior to said assigning. 4. The method for providing remote configuration of a client premise equipment of claim 1, further comprising sending a reboot signal from the Point-to-Point Protocol server to the client premise equipment after said downloading. 5. The method for providing remote configuration of a client premise equipment of claim 1, further comprising disenabling the management ATM virtual circuit between a remote Point-to-Point Protocol server and the client premise equipment via the ATM network after said downloading. 6. The method for providing remote configuration of a client premise equipment of claim 1, wherein said downloading comprises downloading initial client premise equipment configuration software from the Point-to-Point Protocol server to the client premise equipment. 7. The method for providing remote configuration of a client premise equipment of claim 6, wherein said downloading initial client premise equipment configuration software includes downloading an assigned client premise equipment Internet Protocol address. 8. The method for providing remote configuration of a client premise equipment of claim 1, wherein said downloading client premise equipment configuration from the Point-to-Point Protocol server to the client premise equipment, said client premise equipment configuration is software selected from the group consisting of upgrade client premise equipment configuration software, troubleshooting client premise equipment software, client premise equipment configuration feature activation software, client premise equipment configuration feature deactivation software, and client premise equipment target change software. 9. The method for providing remote configuration of a client premise equipment of claim 1, further comprising verifying connectivity after said downloading. 10. The method for providing remote configuration of a client premise equipment of claim 9, wherein said verifying comprises pinging to the client premise equipment. 11. The method for providing remote configuration of a client premise equipment of claim 10, wherein said verifying comprises awaiting a response from the client premise equipment to said pinging. 12. The method for providing remote configuration of a client premise equipment of claim 11, wherein upon no response from the client premise equipment to said pinging after said awaiting for a predetermined period of time, further comprising repeating said creating, assigning, telneting, and downloading. 13. The method for providing remote configuration of a client premise equipment of claim 1, wherein said creating, assigning, telneting, and downloading are performed between the remote Point-to-Poi nt Protocol server and a management port of the client premise equipment. 14. A system for providing remote configuration of a client premise equipment, comprising: a remote Point-to-Point Protocol server adapted to assign a temporary Internet Protocol address to the client premise equipment; a client premise equipment including a management port adapted to send requests for connection to the remote Point-to-Point Protocol server and to receive data downloaded from the remote Point-to-Point Protocol server, the client premise equipment being associated with a permanent client premise equipment Internet Protocol address different from the temporary Internet Protocol address; and a temporary management ATM virtual circuit between the remote Point-to-Point Protocol server and the management port of the client premise equipment. 15. The system for providing remote configuration of the client premise equipment of claim 14, wherein said temporary management ATM virtual circuit is selected from the group consisting of a permanent virtual circuit and a switch virtual circuit. 16. The system for providing remote configuration of the client premise equipment of claim 14, wherein said management port of the client premise equipment is configured to continuously and automatically send requests for connection to the Point-to-Point Protocol server. 17. The system for providing remote configuration of the client premise equipment of claim 14, wherein said management port of the client premise equipment has an address of 0.60 18. The system for providing remote configuration of the client premise equipment of claim 14, wherein said management port of the client premise equipment operates in Point-to-Point Protocol over ATM mode. 19. The system for providing remote configuration of the client premise equipment of claim 14, wherein the client premise equipment is configured to request for an Internet Protocol address from the Point-to-Point Protocol server. 20. The system for providing remote configuration of the client premise equipment of claim 14, wherein the remote Point-to-Point Protocol server is adapted to assign a temporary Internet Protocol address to establish connectivity between the remote Point-to-Point Protocol server and the client premise equipment. 21. The system for providing remote configuration of the client premise equipment of claim 14, wherein the remote Point-to-Point Protocol server is adapted to download a reboot signal to the client premise equipment and the client premise equipment is configured to reboot upon receiving the reboot signal. 22. The system for providing remote configuration of the client premise equipment of claim 14, wherein data downloaded from the remote Point-to-Point Protocol server to the client premise equipment is software selected from the group consisting of upgrade client premise equipment configuration software, troubleshooting client premise equipment software, client premise equipment configuration feature activation software, client premise equipment configuration feature deactivation software, and client premise equipment target change software. . 20, Jun. 26, 1990, pp. 218-225. Fleury, E. et al., "A General Theory for Deadlock Avoidance in Wormhole-Routed Networks," IEEE Trans. on Parallel and Distributed Systems, IEEE Inc., NY, vol. 9, No. 7, Jul. 1, 1998, pp. 626-638. Pifarre G. D. et al., "Adaptive Deadlock-and Livelock-Free Routing in the Hypercube Network," IEEE Trans. on Parallel and Distributed Systems, IEEE Inc., NY, vol. 5, No. 11, Nov. 1, 1994, pp. 1121-1138. Ser. No. 07/902,462 filed Jun. 19, 1992, now abandoned, which is a continuation of U.S. patent application Ser. No. 07/549,278, filed Jul. 6, 1990, now abandoned, the disclosure of each is incorporated herein by reference.
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