| 摘要 |
A telephone speed-dialer for use with a personal digital assistant (PDA) or other mobile device has an infrared transceiver for communication therewith. The dialer unit is connected to a land-based phone line, and remains next to a phone. When a user desires to make a phone call to a number on his or her PDA's address book, the user selects the phone number in the address book an d sends the number via infrared link (i.e. "beams" it) to the dialer. After th e dialer receives the number from the PDA, the dialer senses when the user pic ks up the receiver of the adjacent phone, and automatically dials the phone number with proper area code and any predialing digits. Preferably, the dial er emulates another PDA receiving an electronic business card from the user's PDA, so that no special software need be installed on the user's PDA other than the existing operating system. To conserve battery power when not in us e, the dialer remains in a "sleep mode" until it senses infrared activity. In a n alternative embodiment, the dialer communicates with the PDA with a short range radio frequency link, such as that specified in the emerging Bluetooth Standard, instead of with the infrared link.
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