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Bluetooth device of mobile telephone and its communication method

A bluetooth handset and bluetooth technology are applied in the field of appliances of near field transmission communication systems, and can solve the problems of inconvenience in making and answering calls.

Inactive Publication Date: 2005-05-11
HUIZHOU TCL MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that it is inconvenient for users to directly use mobile phones to make and receive calls

Method used

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  • Bluetooth device of mobile telephone and its communication method
  • Bluetooth device of mobile telephone and its communication method
  • Bluetooth device of mobile telephone and its communication method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment one, as figure 1 , 2 As shown, this mobile phone bluetooth handset includes a body 2 with a touch tip 1 at the front end. The surface of the body 2 is provided with a display screen 3 and buttons 4 . Such as image 3 As shown, the fuselage 2 is provided with a display screen drive circuit, a keypad circuit, a battery power supply circuit (not shown) and a bluetooth function module.

[0019] The bluetooth functional module includes a 2.4GHz radio frequency transceiver, frequency shift keying modem, logic control, clock generation and distribution circuit, register and SPI interface, the radio frequency part is an analog circuit, adopts a direct conversion radio frequency structure, and integrates a voltage controlled oscillation and frequency synthesizer, the direct maximum RF output power is 0dBm, in line with the Bluetooth level 1 standard, the modem part adopts Gaussian frequency shift keying GFSK modulation and CMOS technology, and has the functions of ...

Embodiment 2

[0029] Such as Figure 4 As shown, the fuselage 2 is provided with a built-in microphone 6, a built-in earpiece 7, and a CPU, and analog / digital, digital / analog converters, a microphone audio amplifier circuit, an earpiece audio power amplifier circuit and an input / output interface circuit (not shown) out).

[0030] The transmitting component of the bluetooth function module is used to transmit the voice information input by the built-in microphone 6 to the external space to the matching mobile phone with bluetooth function. The receiving component of the bluetooth function module collects and receives the voice information sent by the mobile phone with bluetooth function that it is matched with from the external space, and transmits the voice information to the built-in receiver 7 . Thereby, this device has the function of bluetooth earphone simultaneously, but it does not have earphone, but is held in hand and directly talks with receiver and microphone.

Embodiment 3

[0032] Such as Figure 8 , 9 As shown, the difference between this example and the second embodiment is that an external earphone 8 with a switch is provided, and the surface of the fuselage 2 is correspondingly provided with an earplug earphone with a switch, which is connected to the fuselage. integrated, or connected to the fuselage through the headphone jack 9 on the fuselage.

[0033] The use of such earphones can reduce external interference, and the sound quality can be better. Like this, just can increase FM radio radio circuit, FM radio recording circuit or compression coding digital music player etc. in the fuselage, so that appreciate music. Such as Figure 4 One is included in .

[0034] The MP3 module of the said compression coded digital music playing part includes the decoding circuit chip of the digital signal processor DSP, the internal register and the central processing unit CPU and its peripheral system program memory and keyboard circuit, and an extern...

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Abstract

The invention consists of a main body whose front end has a touch stylus, whose surface has a displaying screen and keystroke, whose inside has driving circuit for displaying screen, keyboard circuit and blue tooth module. The above blue tooth module is used in emitting / receiving the digital signal into / from the matching blue tooth mobile phone. A part of the digital signal is transmitted and displayed on the screen by the display driving circuit. The distance between user and mobile phone must not be over 10 meters.

Description

technical field [0001] The invention relates to an appliance of a near-field transmission communication system using a transceiver, in particular to a mobile phone bluetooth sub-machine and a communication method thereof. Background technique [0002] Bluetooth (Bluetooth) technology is a short-range radio technology. It is an open unified standard specification for global voice and data wireless transmission. Its purpose is to replace data cables and enable low-power communication between any compatible portable and fixed devices. Low power consumption, low cost, short distance wireless connection becomes possible. This technology works in the 2.4GHz ISM frequency band open to the world. It is based on the radio link that provides fast and reliable transmission of voice and data information. It uses frequency hopping technology to improve anti-interference and anti-attenuation performance. GFSK) modulation method. It can provide 23 or 79 channels, each channel width is 1M...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B5/48
Inventor 戴瑾
Owner HUIZHOU TCL MOBILE COMM CO LTD
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