Michael A Simpson

US Patent:

7039044, May 2, 2006

Filed:

Oct 14, 1999

Appl. No.:

09/418397

Inventors:

Michael C. Whitfield - Valbome, FR
Michael J. Simpson - Rancho Santa Margarita CA, US
Remy P. Gauguey - Le Cannet, FR

Assignee:

Mindspeed Technologies, Inc. - Newport Beach CA

International Classification:

H04L 12/66

US Classification:

370356, 370428

Abstract:

A method and apparatus for early detection of in-band DTMF signals in voice transmissions over an IP network are disclosed. Using a digital signal processor, whenever any indication of signals possibly corresponding to the signals characteristic of DTMF tones are detected, packets of data that would otherwise be sent over the IP network are delayed and temporarily stored in a buffer. Buffering the data packets provides a period of time for digital signal processing techniques to reliably determine whether the characteristics of the detected signal are sufficient to characterize it as a DTMF signal. If a determination is made that the signal has the necessary characteristics of a valid DTMF signal, the buffered packets are discarded and a special control packet is sent formatted to convey to the recipient characteristic information for the detected DTMF signal sufficient to allow the DTMF signal to be generated by a DTMF generator. If a determination is made that the signal does not have the necessary characteristics of a valid DTMF signal, the buffered packets are transmitted. The disclosed method and apparatus is effective to remove DTMF signals from RTP packet transmissions, and to replace the DTMF signals with RTP control packets.

US Patent:

42034167, May 20, 1980

Filed:

Nov 25, 1977

Appl. No.:

5/855026

Inventors:

Ralph E. Simpson - Upland CA
Michael L. Simpson - Ontario CA

Assignee:

Simpson Enterprises - Upland CA

International Classification:

F24C 1510

US Classification:

126212

Abstract:

A device for holding a pot on a gas range burner in a moving recreational vehicle. The device is attachable to a burner grate of the type having radial bars with sloping lower edges, and it has a deck with lateral edges that interfit with a neighboring pair of the radial bars so as to support the deck on the bars and permit it to span the space between them. A pair of locking levers are pivotally supported at a common point under the deck. From their common pivot point, the locking levers extend forwardly and terminate in outturned, downwardly offset feet designed to swing outwardly into frictional contact with the lower edges of the neighboring radial bars from points intermediate the bars. To the rear, the locking levers are formed into a pair of handles. Mounted above the deck on a pair of pivoted brackets are two clamping members with forward portions formed into curved arms for embracing the pot, and rear portions serving as handles.

US Patent:

43078613, Dec 29, 1981

Filed:

Jun 24, 1980

Appl. No.:

6/162572

Inventors:

Ralph E. Simpson - Upland CA
Michael L. Simpson - Ontario CA

Assignee:

Simpson Enterprises - Upland CA

International Classification:

A63B 5504

US Classification:

248 97

Abstract:

A lightweight, collapsible frame for holding a plastic trash bag upright to receive trash. The frame includes a triangular base formed from three pivoted strips that can be folded together for storage when not in use. Additionally, the frame includes three tubular posts or props which are removably attachable to the corners of the triangular base in such a way as to stand upright around the space above the base. Each of the tubular posts has a crosspiece fitted to its upper end for pivotal movement between a first position crosswise of the post, where it serves to prop up the wall of a trash bag in the space above the base when the top of the bag is folded down over it, and a second position at right angles to the first for easy packing and storage purposes. A spring clip is fastened to each of the tubular posts near its upper end. A trash bag is attached to the frame for use by placing it in the space separating the upright posts above the base, with its bottom end down; folding its top edge outwardly over the crosspieces on the posts (after each has been placed in the crosswise position mentioned above) far enough to reach the spring clips on the posts; and securing the edge of the bag in the spring clips.