Title:
【発明の名称】優先順位付けされたパケットの送信用ATMセルを用いたケーブルネットワーク
Document Type and Number:
Japanese Patent JP2001502509
Kind Code:
A
Abstract:
Bi-directional communications system in a CATV network utilizing cell-based Asynchronous Transfer Mode (ATM) transmissions. Packet data existing in any one of several different formats are first converted into ATM cells by a headend controller. Individual cells are then assigned a virtual connection by the headend controller. Based on the virtual connection, the cells can be prioritized and routed to their intended destinations. The cells are transmitted in a shared radio frequency spectrum over a standard cable TV network. A subscriber terminal unit demodulates the received RF signal and processes the cells for use in a computer. Likewise, computers may transmit packet data to their respective subscriber terminal units which are sent to the headend controller over the same CATV network. Hence, the present invention offers a flexible, effective, economic, and fully integrated multimedia bearer system granting immediate support for Internet services, traditional voice telephony, and digital video services over a CATV network.
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Inventors:
Rowback, Mark, Yi.
Helton, Sanford, El.
Lysinia
Gordon, Paul, A.
Sabin, Michael, Jay.
Circer, Murray, M.
Nicholas, Kathleen, M.
Helton, Sanford, El.
Lysinia
Gordon, Paul, A.
Sabin, Michael, Jay.
Circer, Murray, M.
Nicholas, Kathleen, M.
Application Number:
JP51933298A
Publication Date:
February 20, 2001
Filing Date:
June 30, 1997
Export Citation:
Assignee:
Com 21
International Classes:
H04N7/173; H04L27/00; H04N21/2381; H04N21/2389; H04Q11/04; H04L12/56; (IPC1-7): H04L12/28; H04L27/00; H04N7/173
Attorney, Agent or Firm:
Yasuo Ishikawa (1 outside)