Michael J Karweit

US Patent:

47977507, Jan 10, 1989

Filed:

Apr 16, 1986

Appl. No.:

6/852738

Inventors:

Michael J. Karweit - Baltimore MD

Assignee:

John Hopkins University - Baltimore MD

International Classification:

H04N 5782

US Classification:

358335

Abstract:

A method and apparatus for transmitting/recording a computer-generated display simultaneously with the transmission of audio and/or video signals. A computer generates a series of codes from which an image may be derived, the resolution of which is not dependent on the recording/transmission medium. These codes are supplied to a first modem through a standard RS 232 communications line. The first modem converts these codes into image-bearing audio tones. The audio tones are input in the left audio channel of a video tape recorder. Simultaneously, aural information is picked up by a microphone and input into the right audio channel of the video tape recorder. Also simultaneously, a video camera provides video signals to the video channel of the video tape recorder. After recording these signals on a video tape, the tape is transported to a second video tape recorder where it is played back. On playback, the audio tone signals from the left audio channel of the video tape recorder are provided to a second modem.