Mark A Russell

US Patent:

57612439, Jun 2, 1998

Filed:

May 3, 1996

Appl. No.:

8/642803

Inventors:

Mark A. Russell - Atlanta GA
Robert J. Sluijter - Eindhoven, NL
Johannes W. M. Bergmans - Eindhoven, NL

Assignee:

U.S. Philips Corporation - New York NY

International Classification:

H04L 2701

US Classification:

375233

Abstract:

A receiver for transmitted signals which represent digital symbol values includes a low-pass filter to minimize transmission noise by reducing the receiver bandwidth. However, this creates pulse distortion which can cause intersymbol interference when the filtered signal is supplied to a symbol detector. Such interference is minimized by the inclusion of a feedback loop between the output of the symbol detector and the input to the filter, in which a detected symbol is multiplied by correction factor and supplied to a subtractor where it is subtracted from the signal to be filtered. The result of the subtraction is supplied to the filter. The noise reduction filter is thus also used for matching the intersymbol distortion characteristic of a filtered detected symbol to the intersymbol distortion characteristic of a filtered received signal pulse.

US Patent:

20170258241, Sep 14, 2017

Filed:

Mar 10, 2017

Appl. No.:

15/456060

Inventors:

Mark Russell - Canton GA, US

International Classification:

A47C 21/00

Abstract:

A rocking bed foundation includes an upper frame supported on rollers over a lower frame such that the upper frame can support a mattress for transverse reciprocal movement under the influence of a driver mounted within the foundation and further such that the upper frame can be locked to prevent movement when the driver is disengaged.