Robert Henry Kessler

US Patent:

6445422, Sep 3, 2002

Filed:

Jul 25, 2001

Appl. No.:

09/915148

Inventors:

Sealtiel Avalos - Dallas TX
Robert D. Kaylor - Rowlett TX
Robert F. Kessler - Dallas TX

Assignee:

Cable Electronics, Inc. - Garland TX

International Classification:

H04N 704

US Classification:

348485, 348484, 348738, 348705, 381 2, 381106, 386 94

Abstract:

Method and apparatus for generating a composite audio signal clocked to a selected frequency from left and audio input signals. A video/audio signal generator transmits the left and right audio input signals, together with a video signal having a horizontal synchronization signal embedded therein. If copy protection has not been applied to the video signal, the embedded horizontal synchronization signal will have a frequency of 15. 734 KHz. If applied to the video signal, copy protection techniques will shift the frequency of the horizontal synchronization signal. To avoid distortion of the composite audio signal, a switch configured to selectively couple the video signal or a secondary video signal generated by an internal video signal generator to an audio signal processor which generates the composite audio output signal from the left and right audio input signals. Embedded within the secondary video signal is a horizontal synchronization signal having a frequency of 15. 734 KHz. Thus, if copy protection features cause the frequency of the signal embedded within the primary video signal to shift, the switch may be used to couple the audio signal processor to the internal video signal generator, thereby ensuring that the composite audio signal will always be clocked to the selected frequency.

US Patent:

7015797, Mar 21, 2006

Filed:

Feb 10, 2004

Appl. No.:

10/775805

Inventors:

Robert Kaylor - Rowlett TX, US
Sealtiel Avalos - Dallas TX, US
Robert F. Kessler - Dallas TX, US
Randall Muncy - Wylie TX, US

Assignee:

Cable Electronics, Inc. - Garland TX

International Classification:

H04M 11/04

US Classification:

34031011, 34082522, 34082557, 398 15

Abstract:

A method and system for transmitting infra-red (IR) signals through power lines. An IR signal may be received and substituted with a corresponding RF signal. The RF signal may be placed on a power line network in one location and removed by a high-pass filter at a second location. The RF signal may be converted back to the corresponding IR signal.

US Patent:

20040101143, May 27, 2004

Filed:

Nov 19, 2003

Appl. No.:

10/717593

Inventors:

Sealtiel Avalos - Dallas TX, US
Robert Kaylor - Rowlett TX, US
Robert Kessler - Dallas TX, US
Randall Muncy - Wylie TX, US

Assignee:

Cable Electronics, Inc. - Garland TX

International Classification:

H04H005/00

US Classification:

381/002000, 381/016000

Abstract:

A method and system is disclosed for digitally demodulating an analog signal. In one example, the analog signal contains a L+R signal, a L-R signal centered around a carrier signal, and a pilot signal. An exemplary system for digitally demodulating such a signal includes an analog to digital converter, three digital filters, clock reconstitution circuitry, L-R signal recovery circuitry, and channel recovery circuitry. The analog to digital converter converts the analog signal into a digital signal. The three filters separate the L+R signal, the pilot signal, and the L-R signal from the digital signal. The clock reconstitution circuitry reconstitutes a clock signal from the separated pilot signal. The L-R signal recovery circuitry recovers the separated L-R signal using the reconstituted clock signal. The channel recovery circuitry recovers a left channel signal and a right channel signal from the separated L+R signal and the recovered L-R signal.

US Patent:

20040156513, Aug 12, 2004

Filed:

Feb 7, 2003

Appl. No.:

10/360969

Inventors:

Robert Kaylor - Rowlett TX, US
Sealtiel Avalos - Dallas TX, US
Robert Kessler - Dallas TX, US
Randall Muncy - Wylie TX, US

Assignee:

Cable Electronics, Inc. - Garland TX

International Classification:

H04H005/00
H04M011/04

US Classification:

381/077000, 381/016000, 340/310010

Abstract:

The present disclosure provides a system and method for transporting audio signals over conventional power lines within a building.

US Patent:

62887475, Sep 11, 2001

Filed:

Sep 9, 1998

Appl. No.:

9/150465

Inventors:

Sealtiel Avalos - Dallas TX
Robert D. Kaylor - Rowlett TX
Robert F. Kessler - Dallas TX

Assignee:

Cable Electronics, Inc. - Houston TX

International Classification:

H04N 704

US Classification:

348485

Abstract:

Method and apparatus for generating a composite audio signal clocked to a selected frequency from left and audio input signals. A video/audio signal generator transmits the left and right audio input signals, together with a video signal having a horizontal synchronization signal embedded therein. If copy protection has not been applied to the video signal, the embedded horizontal synchronization signal will have a frequency of 15. 734 KHz. If applied to the video signal, copy protection techniques will shift the frequency of the horizontal synchronization signal. To avoid distortion of the composite audio signal, a switch configured to selectively couple the video signal or a secondary video signal generated by an internal video signal generator to an audio signal processor which generates the composite audio output signal from the left and right audio input signals. Embedded within the secondary video signal is a horizontal synchronization signal having a frequency of 15. 734 KHz. Thus, if copy protection features cause the frequency of the signal embedded within the primary video signal to shift, the switch may be used to couple the audio signal processor to the internal video signal generator, thereby ensuring that the composite audio signal will always be clocked to the selected frequency.

US Patent:

59530677, Sep 14, 1999

Filed:

Aug 25, 1997

Appl. No.:

8/918754

Inventors:

Sealtiel Avalos - Dallas TX
Ken Kaylor - Dallas TX
Robert Kaylor - Rowlett TX
Robert Kessler - Dallas TX

Assignee:

Cable Electronics, Inc. - Garland TX

International Classification:

H04N 704

US Classification:

348485

Abstract:

The present invention provides an apparatus that transmits the stereo and the surround sound information of the L-R signal without excessive attenuation at the higher frequencies in order to allow transmission of surround sound through a noisy medium. The apparatus includes a surround sound conditioner coupled to receive a L-R signal portion of the television signal for pre-emphasizing and companding the L-R signal to produce a conditioned L-R signal; a mixer coupled to the surround sound conditioner for switching the conditioned L-R signal at a predetermined value to produce an amplitude modulated L-R signal; and a synchronizing circuitry coupled to the mixer for maintaining the predetermined value in step with the reference value, wherein the mixed L-R signal is combined with a L+R signal portion of the television signal to produce a composite output signal. Furthermore, a method of transmitting stereo and surround sound in accordance with multichannel television sound protocol includes the steps of preconditioning a L-R signal; synchronizing the preconditioned L-R signal to a reference value to produce a synchronized L-R signal; and mixing the synchronized L-R signal with a L+R signal to produce a composite output signal.