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    • 9. 发明专利
    • DIAL SIGNAL GENERATING CIRCUIT
    • JPS6477354A
    • 1989-03-23
    • JP23445187
    • 1987-09-18
    • TAMURA ELECTRIC WORKS LTD
    • KUNII SHUJI
    • H04M1/27H04M1/274
    • PURPOSE:To expand dial function operation corresponding to a matrix key input by executing dial origination and dial registration in accordance with matrix key input in a normal mode, and in a control mode, outputting key position data corresponding to the matrix key input to an external equipment. CONSTITUTION:In the control mode, a matrix key input applied to a dial key decoder 2 is decoded, sent to a communication interface circuit 5 through a switch SW1 and outputted to a CPU circuit 12 to be the external equipment as key position data corresponding to the matrix key input through a serial line SO, and on the other hand, command data and dial data are inputted from the CPU circuit 12 to the circuit 5 through a serial data line SI. In the normal mode, respective switches SW1, SW2 are switched from the shown status and various dial origination corresponding to the matrix key input are originated and registered in a dial memory circuit 4.
    • 10. 发明专利
    • MEMORY DIAL TELEPHONE SET
    • JPS62231554A
    • 1987-10-12
    • JP7252786
    • 1986-04-01
    • TAMURA ELECTRIC WORKS LTD
    • KUNII SHUJIONO AKIRAHORII HISATSUGU
    • H04M1/274
    • PURPOSE:To permit an operator to register and cancel various kinds of dials while the operator is recognizing a key depressed tone by providing a control means which gives an on-hook signal to a dial signal transmitting circuit in a holding state. CONSTITUTION:When a non-lock type holding key is depressed and released during on-hook, a holding switch HLD is switched on in a short time. A control circuit 5 switches off a transistor Q4, inserts a holding tone generation circuit 2 and a receiving magnification circuit 3 into a talking circuit 4 in series and operates the holding tone generation circuit 2 through a transistor Q5. A necessary current can be secured from a line current at the time of holding, so a key depressed tone transmitted from a KT terminal in a dial signal transmitting circuit 8 is emitted from a handset 6 through an inner amplifier and from a speaker SP2 through the receiving magnification circuit 3 at the same time. Thus, the operator can register and cancel the dial while recognizing a key depressed tone.