Edward J Fox

US Patent:

60467754, Apr 4, 2000

Filed:

Sep 25, 1997

Appl. No.:

8/937826

Inventors:

Krishnamurthy Jonnalagadda - Plainsboro NJ
Liston Abbott - East Windsor NJ
Edward Coley Fox - Cranbury NJ

Assignee:

Sarnoff Corporation - Princeton NJ

International Classification:

H04N 7081

US Classification:

348461

Abstract:

A method and apparatus for recovering an information carrier which has been transmitted as a sub-carrier in the lower VSB spectral region of a television signal. The invention utilizes a spectral inversion method to shift the data carrier frequency from the normal VSB spectral region to a spectral region normally associated with video information in a standard television signal. The data carrier is then recovered using a standard video demodulator and provided to a data utilization circuit, such as a QPSK demodulator.

US Patent:

47491175, Jun 7, 1988

Filed:

Apr 1, 1986

Appl. No.:

6/846966

Inventors:

Renato R. Noe - Union City NJ
Edward A. Fox - Glen Mills PA

Assignee:

Public Service Electric and Gas Company - Newark NJ
ICI Americas, Inc. - Wilmington DE

International Classification:

B23K 2008

US Classification:

228107

Abstract:

An improved method for the explosive expansion and welding of tubes to tube sheet includes trepanning the rear face of the tube sheet to form integral collars around each tube-receiving bore in the tube sheet. The collars prevent accumulation of corrosive material in a gap between the tube and tube sheet bore, and provide support to the tube wall when the tube is explosively expanded beyond the region of the tube surrounded by the collar.