Computer system which provides analog audio communication between a PC card and the computer's sound system
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United States of America Patent
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Aug 25, 1998
Grant Date -
N/A
app pub date -
Jun 29, 1995
filing date -
Jun 29, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A computer system including a PC Card or PCMCIA socket receiving a PC Card modem, wherein the PC Card modem communicates analog audio information to/from the computer's sound system. The present invention also comprises a PC Card modem s which is compatible with the PCMCIA specification and which includes telephone answering device and full-duplex speakerphone capabilities. The computer system and PC Card modem of the present invention utilize one or more pins of the PCMCIA connector for analog audio communication between the computer's sound system and the modem. According to the present invention, the PC Card modem uses the digital SPKR pin to provide analog audio signals from the modem to the computer sound system, and uses a reserved-for-future-use (RFU) pin, preferably pin 57, to provide analog audio from the sound system to the modem. In an alternate embodiment, the PCMCIA modem uses the high order address pins of the PCMCIA connector for input and output analog audio instead of the SPKR and RFU pins.
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