Title:
【発明の名称】ビットストリームへのデータパケット挿入の適応的速度制御
Document Type and Number:
Japanese Patent JP2002525926
Kind Code:
A
Abstract:
The rate of insertion of data, such as MPEG table packets, into an outgoing bit stream is varied by a packet handler. The packet handler, which is located in a modulator in a cable television system headend, comprises control logic and a packet router. The actual insertion rate of the outgoing data is based on the bit stream's available capacity for insertion of data and the desired insertion rate of the data. When the available capacity for insertion equals or exceeds the desired insertion rate, the actual insertion rate equals the desired insertion rate. When the available capacity for insertion is less than the desired insertion rate, the actual insertion rate is reduced from the desired insertion rate. The present invention dynamically determines the available capacity for insertion and adjusts the actual insertion rate.
Inventors:
Pinder, Howard Gee.
Kelly, Andrew Oh.
Kelly, Andrew Oh.
Application Number:
JP2000570974A
Publication Date:
August 13, 2002
Filing Date:
September 10, 1999
Export Citation:
Assignee:
Scientific-Atlanta, Incorporated
International Classes:
H04J3/00; H04J3/04; H04L12/56; H04N21/234; H04N21/236; H04N7/26; H04N21/2365; (IPC1-7): H04J3/00; H04J3/04; H04L12/56; H04N7/24
Attorney, Agent or Firm:
Shusaku Yamamoto