Daniel J Bush

US Patent:

53473051, Sep 13, 1994

Filed:

Dec 17, 1990

Appl. No.:

7/628607

Inventors:

Daniel R. Bush - Franktown CO
Ashok Patel - Castle Rock CO
Charlie W. Zetterower - Parker CO

Assignee:

Alkanox Corporation - Evergreen CO

International Classification:

H04M 1100
H04N 714

US Classification:

348 14

Abstract:

Apparatus and method are provided for the simultaneous transmission of video information and audio information in substantially real time over an ordinary voice grade telephone line having limited bandwidth in the range of about 300-3400 Hz. Because of the limited bandwidth of the ordinary telephone line, the video and audio information are compressed before transmission thereof. Each of the video information and audio information is separately compressed, mixed together and then further compressed. After the further compression, a composite signal, which includes the mixture of video and audio information, is asynchronously transmitted over the same bandwidth of the ordinary telephone line. Upon reception, the compressed information is expanded and separate video information and audio information are reproduced for viewing and hearing by the receiving party. To reduce the size of the apparatus, application specific integrated circuits (ASICs) are employed.

US Patent:

51649802, Nov 17, 1992

Filed:

Feb 21, 1990

Appl. No.:

7/482649

Inventors:

Daniel R. Bush - Franktown CO
Ashok Patel - Castle Rock CO

Assignee:

Alkanox Corporation - Castle Rock CO

International Classification:

H04M 1100
H04M 714

US Classification:

379 53

Abstract:

Apparatus and method are provided for the simultaneous transmission of video information and audio information in substantially real time over an ordinary voice grade telephone line having limited bandwidth in the range of about 300-3400 Hz. Because of the limited bandwidth of the ordinary telephone line, the video and audio information are compressed before transmission thereof. Each of the video information and audio information is separately compressed, mixed together and then further compressed. After the further compression, a composite signal, which includes the mixture of video and audio information, is asynchronously transmitted over the same bandwidth of the ordinary telephone line. Upon reception, the compressed information is expanded and separate video information and audio information are reproduced for viewing and hearing by the receiving party. To reduce the size of the apparatus, application specific integrated circuits (ASICs) are employed.

US Patent:

55394523, Jul 23, 1996

Filed:

Sep 6, 1994

Appl. No.:

8/301893

Inventors:

Daniel R. Bush - Franktown CO
Ashok Patel - Castle Rock CO
Charlie W. Zetterower - Parker CO

Assignee:

Alkanox Corporation - Evergreen CO

International Classification:

H04N 714

US Classification:

348 17

Abstract:

Apparatus and method are provided for the simultaneous transmission of video information and audio information in substantially real time over an ordinary voice grade telephone line having limited bandwidth in the range of about 300-3400 Hz. Because of the limited bandwidth of the ordinary telephone line, the video and audio information are compressed before transmission thereof. Each of the video information and audio information is separately compressed, mixed together and then further compressed. After the further compression, a composite signal, which includes the mixture of video and audio information, is asynchronously transmitted over the same bandwidth of the ordinary telephone line. Upon reception, the compressed information is expanded and separate video information and audio information are reproduced for viewing and hearing by the receiving party. To reduce the size of the apparatus, application specific integrated circuits (ASICs) are employed.