Invention Grant
- Patent Title: Encoding multiple messages in audio data and detecting same
- Patent Title (中): 在音频数据中编码多个消息并进行检测
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Application No.: US10302309Application Date: 2002-11-22
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Publication No.: US06845360B2Publication Date: 2005-01-18
- Inventor: James M. Jensen , Alan R. Neuhauser
- Applicant: James M. Jensen , Alan R. Neuhauser
- Applicant Address: US MD Columbia
- Assignee: Arbitron Inc.
- Current Assignee: Arbitron Inc.
- Current Assignee Address: US MD Columbia
- Agency: Cowan, Liebowitz & Latman, P.C.
- Agent Eugene L. Flanagan, III
- Main IPC: H04H1/00
- IPC: H04H1/00 ; H04H20/31 ; G10L19/00
Abstract:
Systems and methods are provided for encoding and decoding multiple messages in audio data. The messages each comprise a sequence of message symbols each comprising a combination of substantially single-frequency components. At least some of the message symbols in one of the messages coexist with at least some of the symbols of another one of the messages along a time base of the audio data.
Public/Granted literature
- US20040102961A1 Encoding multiple messages in audio data and detecting same Public/Granted day:2004-05-27
Information query
