Telecommunication system with burst and continuous audio signals

• US 4,780,758 A
• Filed: 02/24/1988
• Issued: 10/25/1988
• Est. Priority Date: 04/30/1987
• Status: Expired due to Term

• Current Assignee: GTE Main Street Incorporated (Verizon Communications Inc.)
• Original Assignee: GTE Government Systems Corporation (General Dynamics Corporation)
• Inventors: Beriont, Walter J., Mustafa, Mehmet, Tweedy, Ernest P., Lin, Eric C. W.
• Primary Examiner(s): NOT, DEFINED
• Application Number:
  US07/153,941
• Time in Patent Office: 244 Days
• Field of Search: 358/85, 358/86, 358/143, 358/144, 358/145, 379/53, 455/4
• US Class Current: 725/144
• CPC Class Codes: H04N 1/00098 via a television channel, e.g. for a series of still pictures with or without sound
• CPC Class Codes: H04N 7/084 with signal insertion during the horizontal blanking interval only
• CPC Class Codes: H04N 7/088 the inserted signal being digital
• CPC Class Codes: H04N 7/17354 in an intermediate station common to a plurality of user terminals

Abstract

A telecommunication system for transmitting video and plural audio information on a transmission medium includes a facility and an addressable terminal. The facility includes arrangements for providing addressed video frames containing information corresponding to still images and for providing addressed audio frames containing information corresponding to audio bursts. There is also means for providing non-addressed signals containing information corresponding to at least one channel of continuous audio. The addressed video frames, addressed audio frames, and non-addressed signals are coupled to the transmission medium and sent to the terminal. The addressable terminal includes means for detecting said addressed video frames, addressed audio frames, and non-addressed signals on said transmission medium. Circuits select video frames and audio frames in response to their corresponding addresses. Arrangements are made for storing still images contained by selected video frames and for storing and playing audio bursts contained by selected audio frames. Circuits provide continuous audio signals contained by said non-addressed signals. A circuit attenuates the continuous audio signals in response to playing of an audio burst.

Claims

1. A telecommunication system for transmitting video and plural audio information on a transmission medium comprising a facility and an addressable terminal,

wherein said facility includes:

means for providing addressed video frames containing information corresponding to still images;

means for providing addressed audio frames containing information corresponding to audio bursts;

means for providing non-addressed signals containing information corresponding to a least one channel of continuous audio; and

means to couple said addressed video frames, said addressed audio frames, and non-addressed signals to said transmission medium, and

wherein said addressable terminal includes;

means for detecting said addressed video frames, addressed audio frames, and non-addressed signals on said transmission medium;

means for selecting video frames and audio frames in response to their corresponding addresses;

means for storing and playing still images contained by selected video frames;

means for storing and playing audio bursts contained by selected audio frames;

means for playing continuous audio signals contained by said non-addressed signals; and

means for attenuating said continuous audio signals in response to the playing of an audio burst.