James E Blecksmith

US Patent:

48537845, Aug 1, 1989

Filed:

Feb 19, 1988

Appl. No.:

7/157675

Inventors:

John Abt - Nevada City CA
Ronnie D. Barnett - Nevada City CA
James E. Blecksmith - Nevada City CA
Kevin D. Windrem - Grass Valley CA
Neil R. Olmstead - Nevada City CA
Richard A. Jackson - Nevada City CA
Peter D. Symes - Grass Valley CA
Richard S. Bannister - Grass Valley CA
Thomas A. Grancey - Grass Valley CA
Richard A. Frasier - Grass Valley CA

Assignee:

The Grass Valley Group, Inc. - Grass Valley CA

International Classification:

H04N 5268
H04N 5272
H04N 974

US Classification:

358181

Abstract:

A video switcher comprises a source selector having a plurality of input terminals for connection to a plurality of video sources respectively, and at least two output terminals. At least two processing channels each have an input terminal connected to an output terminal of the source selector and also have an output terminal. A video combiner has video input terminals connected to the output terminals of the processing channels and is operative to combine the output signals provided by the processing channels in dependence upon priority signals.

US Patent:

47439580, May 10, 1988

Filed:

Oct 6, 1986

Appl. No.:

6/915821

Inventors:

Richard S. Bannister - Grass Valley CA
James E. Blecksmith - Nevada City CA

Assignee:

The Grass Valley Group, Inc. - Grass Valley CA

International Classification:

H04N 1122
H04N 701
H04N 5262

US Classification:

358 11

Abstract:

A multiple television standards input selector and convertor selects a video signal from among a plurality of television standard format input sources including encoded video, analog component video and digital video. The selected video signal is converted to a predetermined standard format video signal for further processing by a digital video effects device. The selection of the video signal occurs within a vertical interval period so that no visible effect is detectable on a display when switching between video sources.

US Patent:

57199884, Feb 17, 1998

Filed:

Feb 21, 1996

Appl. No.:

8/604267

Inventors:

James E. Blecksmith - Nevada City CA
David Casper - Oregon House CA
James A. Delwiche - Grass Valley CA
Brion L. Dunbar - Grass Valley CA
Thomas H. Knight - Nevada City CA
Scott Murray - Nevada City CA
Neil R. Olmstead - Nevada City CA

Assignee:

Tektronix, Inc. - Wilsonville OR

International Classification:

G06F 1300

US Classification:

386121

Abstract:

A dynamically paged non-volatile random access video store has a random access memory integrated with a disk drive. The random access memory provides realtime access for recording and playing back video from and to a video source. The disk drive provides a non-volatile backup for the random access memory by transferring data between the disk drive and random access memory automatically, or by command, on a non-realtime basis. The video data accesses and transfers are handled by a microprocessor that interfaces with a controller by which an operator inputs instructions. Multiple channels are accommodated via a channel interface, also controlled by the microprocessor, between external video devices and the random access memory. The disk drive stores a plurality of pages of video data, each page corresponding to the capacity of the random access memory.

US Patent:

48212695, Apr 11, 1989

Filed:

Oct 23, 1986

Appl. No.:

6/922367

Inventors:

Richard A. Jackson - Nevada City CA
David E. Lake - Penn Valley CA
James E. Blecksmith - Nevada City CA
Ronnie D. Barnett - Nevada City CA
John Abt - Nevada City CA

Assignee:

The Grass Valley Group, Inc. - Grass Valley CA

International Classification:

G06F 1100

US Classification:

371 16

Abstract:

A diagnostic system for a digital signal processor, having an input module, an output module and a plurality of successive processing modules defining a signal processing path, monitors various internal test points within each module. Any one of the test points may be connected to a diagnostic bus. The output of the diagnostic bus may be appropriately modified and input to the output module in lieu of the digital signal from the last processing module to provide a diagnostic display.

US Patent:

48580112, Aug 15, 1989

Filed:

Apr 4, 1988

Appl. No.:

7/177212

Inventors:

Richard A. Jackson - Nevada City CA
Peter D. Symes - Grass Valley CA
Richard S. Bannister - Grass Valley CA
Thomas A. Grancey - Grass Valley CA
Richard A. Frasier - Grass Valley CA
John Abt - Nevada City CA
Ronnie D. Barnett - Nevada City CA
James E. Blecksmith - Nevada City CA
Kevin D. Windrem - Grass Valley CA
Neil R. Olmstead - Nevada City CA

International Classification:

H04N 5262

US Classification:

358181

Abstract:

Video signal processing apparatus comprises at least first and second source selectors each having a plurality of input terminals, for receiving a plurality of video signals respectively, and at least two output terminals. A set of video processors each have an input terminal and an output terminal. A processor selector is provided for connecting each source selector output terminal selectively to each video processor input terminal. First and second output devices each have a plurality of input terminals connected to the output terminals of the video processors respectively and also have an output terminal. Operator interfaces are connected to the processor selector for defining a first subset of video processors having their input terminals connected to the output terminals of the first source selector and a second subset of video processors having their input terminals connected to the output terminals of the second source selector. The operator interfaces are also connected to the first output device for selecting the output terminals of the first subset of video processors and to the second output device for selecting the output terminals of the second subset of video processors.