Communication system which dynamically switches sizes of sample

Details Communication system which dynamically switches sizes of sample Communication system which dynamically switches sizes of sample

1996-04-16

1999-01-26

Lee, Thomas C.

Communications: directive radio wave systems and devices (e.g.,

Clutter elimination

Mti

395872, 395838, 342 57, 36470505, G06F 1300

Patent

active

058647147

ABSTRACT:
An apparatus for and method of implementing a novel buffer ba full duplex communication system is disclosed. The disclosed invention is particularly useful in native sign processing systems wherein heavy contention of processor resources typically exist, such as in systems running multi-tasking operating systems. The communication system of the present invention includes a receiver, transmitter, echo canceler. CODEC and telephone hybrid. The major components of the system operate on a buffer of input samples consisting of a set of input bits. The communication system operates to generate a buffer of output samples consisting of a set of output bits. The invention utilizes a novel buffer switching mechanism to optimize the tradeoff between processing response time, on one hand, and robustness to interrupt latency and processor implementation on the other hand. The internal processing of the modem works on a buffer full of samples once every time slice thus reducing the probability of a buffer underrun/overrun error occurring. The reduction in probability of data underrun/overrun is achieved by increasing the buffer size, thus giving the operating system greater leeway in choosing the exact time the signal processing functions are run. Small buffers, however, provide the communication system with short and accurate response time. These contradicting motives lead to the novel switchable size buffer scheme of the present invention. This is achieved without a loss of signal coherency.

REFERENCES:
patent: 4841526 (1989-06-01), Wilson et al.
patent: 5077550 (1991-12-01), Cormier
patent: 5327428 (1994-07-01), Van As et al.
patent: 5440740 (1995-08-01), Chen et al.
patent: 5585803 (1996-12-01), Miura et al.
Kenworthy, "Modems. (Optimizing modem data flow)(World-Class Tune-Up Tips: Hardware Heaven)", CMP Publications Inc., Windows Magazine, v6,n7, pp. 150-152, Jun. 20, 1995.

Affiliated with

Also associated with

Rating

Communication system which dynamically switches sizes of sample does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Communication system which dynamically switches sizes of sample , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Communication system which dynamically switches sizes of sample will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1457449