Electrical audio signal processing systems and devices – Headphone circuits
Reexamination Certificate
2007-06-05
2007-06-05
Lee, Ping (Department: 2615)
Electrical audio signal processing systems and devices
Headphone circuits
C324S538000, C455S575200, C379S433100
Reexamination Certificate
active
10708396
ABSTRACT:
A connector device includes a common jack connected to a first information-handling apparatus and a plug connected to a second information-handling apparatus. The plug is adapted for insertion into the common jack and contains a first conductive surface and a ground contact. A first jack contact is formed on the common jack for receiving communication signals when engaging with the first conductive surface of the plug. A memory buffer is used for receiving the communication signals through the first jack contact and for sending out the communication signals to the first information-handling apparatus when the memory buffer is not empty. A control monitors a status of the memory buffer. When the memory buffer is not empty, the control circuit determines that the plug is inserted into the common jack, and when the memory buffer is empty, the control circuit determines that the plug is removed from the common jack.
REFERENCES:
patent: 6069960 (2000-05-01), Mizukami et al.
patent: 6594366 (2003-07-01), Adams
patent: 7071702 (2006-07-01), Hsieh et al.
BenQ Corporation
Hsu Winston
Lee Ping
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