Patent ID: 6058117
Filing Date: 2000-05-02
Classification: H04L

Abstract:
A method for utilizing a non-deterministic, shared local bus to transport data signals between channels of a TDM signal stream on a TDM bus and a host computer coupled to said local bus absent clock signals from said TDM bus, with an interface unit coupled between said TDM bus and said local bus and a device-for encoding/decoding data signals coupled to said local bus, wherein said TDM signal stream includes a clock signal having a highly accurate fixed frequency clock rate that is available to said interface unit, said method comprising the steps of:a. converting said data from a serial, multi-channel TDM data format of said TEM signal stream to a parallel data sample for use on said local bus absent said dock signals from said TDM bus with all data in each particular parallel data sample corresponding to data from a same channel of said TDM data format with said interface unit;b. directing parallel data samples converted from said TDM signal stream in step a. via said local bus to said encoding/decoding device or to said host computer, wherein unencoded data samples are directed to said host computer and encoded data samples are directed to said encoding/decoding device;c. unencoding said encoded data samples from step b. with said encoding/decoding device;d. redirecting unencoded data samples of step c. to said host computer via said local bus;e. directing parallel data samples that are not to be encoded from said host computer via said local bus to said interface unit;f. directing parallel data samples that are to be encoded from said host computer via said local bus to said encoding/decoding device;g. encoding unencoded data samples from said host computer with said encoding/decoding device;h. redirecting encoded data samples of step g. to said interface unit via said local bus;i. converting said data samples from steps f. and h. into multi-channel TDM data format by means of said interface unit with all data in each particular parallel data sample in a same channel of said TDM data format and said clock signal of said TDM signal stream added.