AN AUDIO SERVICE PROCESSING CIRCUIT AND AN AUDIO CARD TERMINAL

WIPO Patent Application WO/2008/003189

A1

An audio service processing circuit includes a storage unit (20), a microprocessor (10), a bus control unit (30) and an audio service processing unit (60), in which the said storage unit (20) is used to store the application program instruction and the audio service data; the said microprocessor (10) is used to read the application program instruction in the said storage unit (20), and generate the signal accessed by the system bus in order to access the said storage unit (20) and the said audio service processing unit (60) on the system bus; the said bus control unit (30) is used to provide the function that the said microprocessor (10) controls the system bus; the said audio service processing unit (60) is used to receive the key information through the key interface and generate DTMF/FSK audio signal to be transmitted to the speaker interface and drive the speaker sound. There is also an audio card terminal having the audio service processing. It is resolved in the invention that the service function of the audio card terminal is not realized in the case of ensuring low cost in the art.

JP2003008741	CONNECTION SYSTEM FOR EMERGENCY INFORMATION USING PORTABLE TELEPHONE
JP5598564	A radio communications system and a method

TAN LIJUAN (CN)
WANG WEIJIE (CN)

PCT/CN2006/003180

January 10, 2008

November 27, 2006

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HUAWEI TECH CO LTD (CN)
TAN LIJUAN (CN)
WANG WEIJIE (CN)

H04M3/00

CN2425461Y	2001-03-28
CN2337719Y	1999-09-08
CN1846060A	2006-10-11
US20020106073A1	2002-08-08

UNITALEN ATTORNEYS AT LAW (Scitech PlaceNo.22, Jian Guo Men Wai Ave.,Chao Yang District, Beijing 4, CN)

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