Mobile communication terminal with hearing-aid function and its method for realizing hearing-aid
A mobile communication terminal and function technology, which is applied to telephones with user guidance/use, branch office voice amplifiers, etc., can solve the problems of inability to realize the hearing aid function and the limited range of volume adjustment functions, and achieves easy operation and improved call quality. Effect
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[0020] The invention provides a method and a device for realizing the hearing aid function in a mobile communication terminal (such as a mobile phone), which is applicable to 2.5th generation and 3rd generation mobile terminals such as GSM / GPRS, CDMA, WCDMA, and TD-SCDMA.
[0021] see figure 2 , which is a circuit connection diagram of the handset device in the mobile communication terminal of the present invention. As shown in the figure: it includes the main chip (CPU) and the receiver. The main chip (such as the baseband chip of CDMA2000) has two receiving signals that are directly output to the receiver (that is, the speaker). These two signals are generally called Receiver signals. , P, N are the pins of the two signals connected to the earpiece (P means positive, N means negative). A power amplifier (PA) module that can amplify the signal is connected between the main chip and the earpiece, and whether the power amplifier (PA) module is controlled by the CPU to amplify...
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