Patent ID: 6266543
Filing Date: 2001-07-24
Classification: H04M

Abstract:
An electronic phone book dialing system combined with a vehicle-installed hand-free system of a cellular phone, comprising:an index unit, a data pool, a temporary register for dialed numbers, a numerical code checking device, a dial control device, a dialing device, a time counter and a far-end sound detecting unit, wherein:said index unit is responsible for locating a key data stored therein for said dialing system as an abridged information related to a to-be-dialed phone number is input so that a complete phone data related to said phone number can be searched in the data pool;said data pool is used to store telephone number data applied to said dialing system;said temporary register for dialed numbers is used to temporarily retain telephone numbers to be dialed for said dialing system;said numerical code checking device is used to check for said dialing system if each digit delivered from said temporary register for dialed numbers is within a range from 0 to 9 so as to discern if said digits are related to an extension number;said dial control unit is used to stop a dialing of an extension number for a short time as a telephone of a dialed number is successfully connected at another end, permitting an addressing message of said telephone in connection to be delivered;said dialing device is responsible for dialing out digital numbers transmitted from said numerical code checking device for said dialing system;said far-end sound detecting device is used to detect if an addressing message at other end of a connected phone is broadcast or not;said time counter is used to count time in a temporary holding of a dialing operation for said dialing system.