Title:
【発明の名称】携帯用コンピュータ接続機能を持つ公衆電話機及びその制御方法
Document Type and Number:
Japanese Patent JP2002525918
Kind Code:
A
Abstract:
A public telephone having a portable computer interface function and a method for controlling the same. The public telephone comprises a hook switch (20), a card reader (30) for reading information recorded on a card, a card verifier (31) for checking the read information, a coin sorter (32) for sorting dropped coins, a keypad input unit (34) for generating key signals under the condition that the card or coins are valid, a DTMF signal generator (35) for generating a DTMF signal in response to the key signals generated by the keypad input unit, a controller (36) being initialized in response to an off-hook state of the hookswitch, the controller combining and analyzing output signals from peripheral devicces and controlling the entire operation of the public telephone in accordance with the analyzed result, a character display unit (37) for outputting a guidance character message about the use of the public telephone to the user, an office line interface unit (38) for performing an interface operation with the office line, a speaking circuit (39) connected to the office line interface unit for amplifying a signal to be transmitted and a received signal, a PC communication switch (28) for starting a PC communication mode, and a modem connector (42) for connecting the speaking circuit to a modem of a PC.
Inventors:
Choi Young Su
Application Number:
JP2000570951A
Publication Date:
August 13, 2002
Filing Date:
September 15, 1999
Export Citation:
Assignee:
Choi Young Su
International Classes:
H04M11/00; H04M11/06; H04M17/00; H04M17/02; H04M15/00; (IPC1-7): H04M17/00; H04M11/00; H04M15/00
Attorney, Agent or Firm:
Eiji Saegusa (8 others)