发明名称 |
APPARATUS AND METHOD OF DETECTING A SYNCHRONIZING SIGNAL OF PUBLIC WAVE USING AN AUDIO WATERMARK |
摘要 |
PURPOSE: An apparatus and method of detecting a synchronizing signal of public wave using an audio watermark are to synthesize additional information in a public wave signal using the watermark and synchronize a broadcasting system at a receiving part using the additional information, thereby stabilizing the system. CONSTITUTION: An apparatus for detecting a synchronizing signal of public wave using an audio watermark comprises an ADPCM(Adaptive Differential Pulse Code Modulation) converter(3) for converting a public wave signal having the watermark into an ADPCM type; an analog/digital and digital/analog converter(2) for converting the public wave signal output from the ADPCM converter; a watermark detecting portion for detecting the watermark inserted into the public wave signal; and a synchronous signal generating portion for receiving a detected watermark signal to generate the synchronous signal of a broadcasting system. In the apparatus, the public wave signal is a voice signal. A method of detecting the synchronizing signal of public wave using the audio watermark comprises the steps of: receiving the public wave signal having the watermark through an antenna(4); converting the input public wave signal by the ADPCM method; converting the public wave signal from the ADPCM converter into an analog or digital signal; detecting the watermark; and generating the synchronous signal of the broadcasting system suing the watermark signal.
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申请公布号 |
KR20010008046(A) |
申请公布日期 |
2001.02.05 |
申请号 |
KR20000065408 |
申请日期 |
2000.11.04 |
申请人 |
SEALTRONIC TECHNOLOGY, INC. |
发明人 |
KIM, SANG UK;LEE, JIN HEUNG;SIM, DONG SEOP;YOO, SANG HYEON |
分类号 |
H04N5/08;(IPC1-7):H04N5/08 |
主分类号 |
H04N5/08 |
代理机构 |
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地址 |
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