Electrical computers and digital processing systems: multicomput – Computer-to-computer protocol implementing – Computer-to-computer data framing
Patent
1998-03-13
2000-11-21
Rinehart, Mark H.
Electrical computers and digital processing systems: multicomput
Computer-to-computer protocol implementing
Computer-to-computer data framing
709231, 709219, 370476, G06F 1338, G06F 1517
Patent
active
061516341
ABSTRACT:
An audio-on-demand communication system provides real-time playback of audio data transferred via telephone lines or other communication links. One or more audio servers include memory banks which store compressed audio data. At the request of a user at a subscriber PC, an audio server transmits the compressed audio data over the communication link to the subscriber PC. The subscriber PC receives and decompresses the transmitted audio data in less than real-time using only the processing power of the CPU within the subscriber PC. According to one aspect of the present invention, high quality audio data compressed according to lossless compression techniques is transmitted together with normal quality audio data. According to another aspect of the present invention, metadata, or extra data, such as text, captions, still images, etc., is transmitted with audio data and is simultaneously displayed with corresponding audio data. The audio-on-demand system also provides a table of contents indicating significant divisions in the audio clip to be played and allows the user immediate access to audio data at the listed divisions. According to a further aspect of the present invention, servers and subscriber PCs are dynamically allocated based upon geographic location to provide the highest possible quality in the communication link.
REFERENCES:
patent: 4827256 (1989-05-01), Yokoyama
patent: 5132992 (1992-07-01), Yurt et al.
patent: 5237322 (1993-08-01), Heberle
patent: 5537409 (1996-07-01), Moriyama et al.
patent: 5719786 (1998-02-01), Nelson et al.
patent: 5758085 (1998-05-01), Kouoheris et al.
patent: 5793980 (1998-08-01), Glaser et al.
patent: 5915094 (1999-06-01), Kouloheris et al.
patent: 5917835 (1999-06-01), Barret et al.
Govindan R; "Operating Systems Mechanisms for Continuous Media"; Thesis, University of California, Berkeley CA, 1992.
Topolcic C et al.; "Experimental Internet Stream Protocol, Version 2 (ST-II)"; RFC-1190; IETF Request for Comments, Oct. 1990.
Schulzrinne H et al.; "Real Time Streaming Protocol (RTSP)"; RFC-2326; IETF Request for Comments, Apr. 1998.
Bigelow S J; "Modem Communications Standards"; Electronics Now; pp. 35-42, Sep. 1994.
Boutell Thomas B.
Glaser Robert D.
Goldberg Randy Glen
O'Brien Mark
RealNetworks, Inc.
Rinehart Mark H.
LandOfFree
Audio-on-demand communication system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Audio-on-demand communication system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Audio-on-demand communication system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1266861