Mobile phone being separated into handset and host phone which could be used as a PDA and communication method thereof

• US 20040029581A1
• Filed: 05/14/2003
• Published: 02/12/2004
• Est. Priority Date: 11/18/2000
• Status: Abandoned Application

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Lu, Yifeng
• Application Number:
  US10/437,429
• Publication Number:
  US 20040029581A1
• Time in Patent Office: Days
• US Class Current: 455/426.1
• CPC Class Codes: H04M 1/0256 wherein the modules are operable in the detached state, e.g. one module for the user interface and one module for the transceiver
• CPC Class Codes: H04M 1/72412 using two-way short-range wireless interfaces
• CPC Class Codes: H04M 1/725 Cordless telephones user interfaces specially adapted therefor H04M1/724
• CPC Class Codes: H04M 2250/02 including a Bluetooth interface
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

The invention discloses a separated mobile phone comprises a host-phone and a handset. The host-phone includes a wireless modem module, a main controller, a control signal interface, a digital audio interface, a low-power wireless transceiver module and a PDA device. The handset comprises a main controller, a display, a microphone, a speaker, a keyboard and a low-power wireless transceiver module. The low-power wireless transceiver module in host-phone can be set inside or outside. Communication modules between the host-phone and handset use Bluetooth protocol or Home Radio Frequency protocol. The host-phone and handset can access to public switched telephone network through a home cordless telephone.

Claims

1. A separated mobile phone with PDA function, the mobile phone comprising a host-phone and a handset, and both are independent in space:

the host-phone including a wireless modem module, a main controller, a control signal interface, a digital audio interface, a low-power wireless transceiver module and a PDA device;

the wireless modem module, the control signal interface and the PDA device being connected with the main controller, respectively;

the digital audio interface being connected with the wireless modem module;

the digital audio interface and the control signal interface being connected with the low-power wireless transceiver module, respectively;

the handset including a main controller, a display, a microphone, a speaker, a keyboard and a low-power wireless transceiver module;

the display, the microphone, speaker and the low-power wireless transceiver module being connected to the main controller, respectively;

the keyboard being connected with the low-power wireless transceiver module.

2. The separated mobile phone with PDA function according to claim 1, the low-power wireless transceiver module in the host-phone and the handset is a Bluetooth protocol module.

3. The separated mobile phone with PDA function according to claim 1, the low-power wireless transceiver module in the host-phone and the handset is a Home Radio Frequency protocol module.

4. The separated mobile phone with PDA function according to claim 1, the low-power wireless transceiver module of the host-phone is outside the host-phone.

5. The separated mobile phone with PDA function according to claim 1, the low-power wireless transceiver module of the host-phone is inside the host-phone.

6. The separated mobile phone with PDA function according to claim 1, working frequency between the host-phone and the handset of the mobile phone is 2.4 GHz.

7. The separated mobile phone with PDA function according to claim 1, the control signal interface in the host-phone is a RS232 interface.

8. The separated mobile phone with PDA function according to claim 1, the control signal interface in the host-phone is an USB interface.

9. A communication method of a separated mobile phone with PDA function, comprising a sending method and a receiving method:

the sending method including;

an audio signal coming from a microphone of a handset, after having been processed by a main controller of the handset, being sent to a low-power wireless transceiver module for transmitting;

the transmitted signal being received by a low-power wireless transceiver module in a host-phone, and being transferred to a wireless modem module through a digital audio interface;

after having been processed and modulated in the wireless modem module, the signal being emitted in air;

the receiving method including;

a signal coming from air, being demodulated by the wireless modem module in the host-phone and being recovered to an audio signal, which then being transferred to the low-power wireless transceiver through the digital audio interface;

the recovered audio signal being modulated by the low-power wireless transceiver and being transmitted to the handset in a short distance;

in the handset, the modulated audio signal being received and demodulated to an audio signal by the low-power wireless transceiver module;

the audio signal being sent to the speaker in the handset to output, under control of the main controller of the handset;

further including;

a control command, sent out by a keyboard in the handset, being first modulated by the low-power wireless transceiver module, and then transmitted to the low-power wireless transceiver module in the host-phone;

in the host-phone, the control command being solved by a control signal interface and the main controller, then being modulated and emitted to air by the wireless modem module;

a control command coming from air, being received and demodulated by the wireless modem module in the host-phone;

after having been passed through the main controller and the control signal interface, the control command being modulated and transmitted to the handset by the low-power wireless transceiver module in the host-phone;

in the handset, the control command being received by the low-power wireless transceiver module, and shown on a display after having been processed by the main controller.

10. The communication method according to claim 9, the host-phone and the handset of the mobile phone accessing to public switched telephone network through a host-phone of cordless telephone.