Bruce L Johnson
Engineers at Brehm Rd, Longmont, CO
License number
Colorado 16919
Issued Date
Jan 15, 1980
Renew Date
Nov 1, 2015
Expiration Date
Oct 31, 2017
Type
Professional Engineer
Address
Address
2207 Brehm Rd, Longmont, CO 80513
Personal information
See more information about Bruce L Johnson at radaris.comName
Address
Phone
5193 Zinnia St, Arvada, CO 80002
502 La Vista Rd, Pueblo, CO 81005
5054 Dakota Run, Littleton, CO 80125
Professional information
See more information about Bruce L Johnson at trustoria.com
Spectrum Conservation In Encoded Color Tv Signals
Spectrum Conservation In Encoded Color Tv Signals
US Patent:
4514753, Apr 30, 1985
Filed:
Nov 3, 1982
Appl. No.:
6/438679
Inventors:
Glen R. Southworth - Boulder CO
Bruce F. Johnson - Longmont CO
Bruce F. Johnson - Longmont CO
Assignee:
Colorado Video, Incorporated - Boulder CO
International Classification:
H04N 9493
US Classification:
358 11
Abstract:
Spectrum conservation in encoded color TV signals is disclosed. An encoded color video signal is orthogonally re-encoded to eliminate the high frequency color subcarrier component to enable transmission or recording of the resulting video signal without distortions in the amplitude or phase characteristics of the encoded color chrominance component as might be introduced without re-encoding of the signal. Re-encoding is achieved by orthogonally converting the incoming color video signal at a predetermined rate, and specific embodiments are disclosed for achieving an optimum orthogonal pattern of the color subcarrier information. After transmission or recording, the original high frequency color subcarrier information and picture luminance component is reconstructed in a video memory device. Orthogonal re-encoding is shown to be generally useful for re-encoding color TV signals including providing an orthogonally encoded color slow-scan TV signal without use of intermediate memory devices.
Color Slow-Scan Tv System And Method
Color Slow-Scan Tv System And Method
US Patent:
4400717, Aug 23, 1983
Filed:
Apr 21, 1981
Appl. No.:
6/256207
Inventors:
Glen R. Southworth - Boulder CO
Larry R. McClelland - Longmont CO
Bruce F. Johnson - Longmont CO
Larry R. McClelland - Longmont CO
Bruce F. Johnson - Longmont CO
Assignee:
Colorado Video Incorporated - Boulder CO
International Classification:
H04N 932
US Classification:
358 13
Abstract:
A color slow-scan TV system and method are disclosed for selecting U. S. standard NTSC TV color pictures (or alternately other standards such as PAL or non-standard color TV) to be transmitted, transmitting the selected pictures utilizing slow-scan techniques, and reconstructing the pictures after transmission for display. The system includes a video compressor (transmitter) for receiving a composite video signal indicative of a color TV picture and providing therefrom a color slow-scan output signal indicative thereof, and a video expander (receiver) for receiving color slow-scan signals after transmission and providing therefrom a fast-scan output signal suitable for display of the color TV picture. The system and method include digitizing a selected video signal indicative of a TV color picture, writing the digitized information into a digital memory, reading out the memory through a digital-to-analog converter at a color slow-scan rate suitable for transmission on a transmission channel, receiving the transmitted color slow-scan signal and digitizing the received color slow-scan signal, writing the digitized color slow-scan information into a digital memory, and reading out the memory through a digital-to-analog converter at a fast-scan rate suitable for display on conventional color TV monitors using NTSC, PAL, or other standards.