Automatic signal transfer apparatus for mobile phone
First Claim
1. Automatic signal transfer apparatus for mobile phone comprising:
- a mobile phone interface circuit for connecting to terminals of an earphone, a microphone interface circuit for connecting to terminals of an earphone, a microphone and a charging battery unit of the mobile phone;
a T/R (Transmitter/Receiver) signal transfer circuit for transforming a voice signal to the mobile phone to a T/R signal acceptable to an indoor telephone connected to the telecom line;
a DC power supply circuit for supplying DC power to all electrical circuits of said apparatus and the indoor telephone;
a line state detection circuit for detecting whether the indoor line is on line or not, and also for detecting if there is a calling signal to the mobile phone;
a change over control circuit for receiving signal from said line state detection circuit informing the line state so as to change over the line connection;
a change over device for changing the line connection to the mobile phone side or to the telecom line side; and
a ringing circuit responsible for receiving bell signal of the mobile phone and transforming it into a bell signal for the indoor telephone;
with such a scheme of the circuits, a voice signal inputted to the mobile phone is transformed to T/R voice signal acceptable for the indoor telephone by said T/R signal transfer circuit through earphone and microphone terminals of the mobile phone thereby realizing the transformation between voice signal of the mobile phone and T/R signal of the indoor telephone.
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Accused Products
Abstract
Automatic signal transfer apparatus for mobile phone is composed of an interface circuit, a transmitter/receiver signal transfer circuit, a DC power supply circuit, a line state detection circuit, a change over control circuit, a change over device, and a ringing circuit. With this structure the apparatus is able to automatically identify whether the input signal comes from the commercial telecom line, or from the mobile phone, and automatically transfers to the indoor telephone. By so, in order to receive both calling coming from the telecom line and calling to the mobile phone, and transfer the callings to the indoor telephone set without going through a tedious presetting procedure, it is only required to connect the mobile phone to an interface circuit. With such scheme, the apparatus of the present invention will never affect function and operation of the indoor telephone.
17 Citations
8 Claims
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1. Automatic signal transfer apparatus for mobile phone comprising:
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a mobile phone interface circuit for connecting to terminals of an earphone, a microphone interface circuit for connecting to terminals of an earphone, a microphone and a charging battery unit of the mobile phone;
a T/R (Transmitter/Receiver) signal transfer circuit for transforming a voice signal to the mobile phone to a T/R signal acceptable to an indoor telephone connected to the telecom line;
a DC power supply circuit for supplying DC power to all electrical circuits of said apparatus and the indoor telephone;
a line state detection circuit for detecting whether the indoor line is on line or not, and also for detecting if there is a calling signal to the mobile phone;
a change over control circuit for receiving signal from said line state detection circuit informing the line state so as to change over the line connection;
a change over device for changing the line connection to the mobile phone side or to the telecom line side; and
a ringing circuit responsible for receiving bell signal of the mobile phone and transforming it into a bell signal for the indoor telephone;
with such a scheme of the circuits, a voice signal inputted to the mobile phone is transformed to T/R voice signal acceptable for the indoor telephone by said T/R signal transfer circuit through earphone and microphone terminals of the mobile phone thereby realizing the transformation between voice signal of the mobile phone and T/R signal of the indoor telephone. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification