O-Cheng Chang

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San Diego, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
System and method for mixing audio with ringtone data
- Patent number 8,498,667
- Issue date Jul 30, 2013
- QUALCOMM Incorporated
- O-Cheng Chang
- G10 - MUSICAL INSTRUMENTS ACOUSTICS

Patents Applicationslast 30 patents

Information Patent Application
SYSTEM AND METHOD FOR MIXING AUDIO WITH RINGTONE DATA
- Publication number 20090131119
- Publication date May 21, 2009
- QUALCOMM Incorporated
- O-Cheng Chang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE