| US 7,567,589 B2 | ||
| Rate generator in a video on demand system having multiple constant bit rate data | ||
| Gerald T. Caracciolo, Cherry Hill, N.J. (US); and Steven Zack, Burlington, N.J. (US) | ||
| Assigned to Comcast IP Holdings I, LLC., Wilmington, Del. (US) | ||
| Filed on Oct. 24, 2006, as Appl. No. 11/585,482. | ||
| Application 11/585482 is a division of application No. 09/459237, filed on Dec. 10, 1999, granted, now 7,142,567. | ||
| Claims priority of provisional application 60/127395, filed on Apr. 01, 1999. | ||
| Prior Publication US 2007/0091936 A1, Apr. 26, 2007 | ||
| Int. Cl. H04J 3/06 (2006.01) | ||
| U.S. Cl. 370—516 [370/252] | 19 Claims |
| 1. A method for deriving and implementing a rate generator architecture for a selected number of users, the rate generator
architecture having a plurality of physical accumulators, each physical accumulator being sequentially operated as a plurality
of virtual accumulators, the method comprising:
calculating a number of bits required for each accumulator in the rate generator architecture;
calculating a number of virtual accumulators to sequentially implement for each of the physical accumulators in the rate generator
architecture; and
calculating a number of physical accumulators for the rate generator architecture using the calculated number of virtual accumulators
and the selected number of users;
generating a number of different clock signals corresponding to the selected number of users in a time-shared manner using
the calculated number of physical accumulators.
|