Information retrieval system

Details Information retrieval system Information retrieval system

2006-05-23

2006-05-23

Feild, Joseph (Department: 2681)

Telecommunications

Radiotelephone system

Message storage or retrieval

C455S502000, C455S414100, C455S414200, C455S041200

Reexamination Certificate

active

07050790

ABSTRACT:
A server transmits audio and/or visual information in a limited space. A hand-held device communicates with the server by two-way communication while the hand-held device is located in the space that is a communications area covered by the server. The server transmits relevant information on the audio and/or visual information to the hand-held device on request made by the hand-held device. An information providing apparatus may transmit audio and/or visual information in the space. A server communicates with the information providing apparatus by two-way communication to provide the relevant information on request made by the information providing apparatus. The relevant information provided to the information providing apparatus is output in the space in synchronism with the audio and/or visual information.

REFERENCES:
patent: 6549773 (2003-04-01), Linden et al.
patent: 6615186 (2003-09-01), Kolls
patent: 6697632 (2004-02-01), Sood
patent: 2002/0065066 (2002-05-01), Takagaki
patent: 08-154074 (1996-06-01), None
patent: 11-065494 (1999-03-01), None

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