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Self-adapting ringing unit cooperate with chord ring

A ringing device, adaptive technology, applied in the direction of selection devices, devices called number recording/indicating calling party numbers, radio/inductive link selection arrangements, etc. minor issues

Inactive Publication Date: 2003-10-01
LENOVO (BEIJING) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this method brings a problem. The soft ringing gives people the feeling that the sound is "small". In a noisy environment, such as in a busy city or on public transportation, it is easy to miss incoming calls.
At present, there are two solutions to this problem. One is to set the scene mode, but it needs to be pre-set manually every time, and it is easy to forget.
Another way is the so-called gradual function of the ringtone, but because the gradual time is very short, it quickly reaches the maximum value within a few seconds, which is useless

Method used

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  • Self-adapting ringing unit cooperate with chord ring
  • Self-adapting ringing unit cooperate with chord ring
  • Self-adapting ringing unit cooperate with chord ring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] see figure 1 and image 3 :like figure 1 As shown, it is installed in the mobile phone, the main control 3 in the present embodiment adopts the ARM7TDMIE core of the 32-bit core, and the digital signal processor 7 adopts the TMS320C54X series Lead Mega Module core of the 16-bit fixed point of Texas Instruments or the core of the analog device company. ADSP21XX core, these devices have high flexibility and customizability; sounding body 6 adopts the micro speaker S016J06 of Sanyo Company of Japan, its rated impedance is 80hm, the rated input power is 0.2 watts, and the flat frequency response range is between 1K and 8K; Microphone 1 adopts the WM64-BK type that is applicable to GSM dual-frequency mobile phone of Japanese Panasonic Company, and main index is that signal-to-noise ratio is about 58dB, and sound pickup sensitivity is about-45dB when F=1KHz, and sound pressure is 1Pa. The audio amplifier 5 adopts the LM4862 audio amplifier of National Semiconductor Corporat...

Embodiment 2

[0019] see figure 2 and image 3 , which is applied to the PDA, the adaptive ringing device in the wireless PDA is essentially the same as that in the mobile phone, such as figure 2As shown, the difference lies in the choice of devices. The MCU generally chooses a RISC processor based on the ARM9 core, or Intel's StrongARM, or Motoroal's Dragon Ball (Dragon Ball) series processors. Since the wireless PDA is based on the technical characteristics of the wireless modem module, which does not necessarily provide the possibility of freely customizing the DSP algorithm, the spectrum analysis and time-frequency conversion calculation work originally completed by the DSP will be completely or partially performed by the MCU depending on the specific situation. Completed, at this time it is necessary to modify the software, simplify the analysis algorithm, and reduce the calculation burden of the MCU. In this case, the block diagram adjustment is as follows figure 2 shown. The di...

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Abstract

An adaptive ringing device includes connecting in sequence of microphone, A / D converter, main controller, D / A converter, audio amplifier and sound with circuit connection as well as digital signal precessor being circuit-connected with the main controller in two-way connection and it have a music instrument digit output to send musical instrument digit signal to D / A converter. Its features are: a. A controllable circuit formed by an output outlet of pulsewidth modulation signal in the said main controller and audio amplifier can send plusewidth modulation signal to audio amplifier as required; b) an adaptive control program for cooperating with chard ringing sound is stored in the nonvolatile internal memory of communication terminal; and c) a back ground noise threshold table is preset and stored in the program storage area of nonvolatile internal memory and it can be called by the adaptive control program.

Description

technical field [0001] The present invention relates to a kind of incoming call ringing device that is applied to various portable mobile communication terminals, specifically, is a kind of characteristic and digital signal processing technology that utilizes audio signal, for stereo, chord, class MIDI (Music Instrument Digital Interface musical instrument Digital interface) ringing function adaptive adjustment and efficiency improvement device. Background technique [0002] At present, the ringing function in the portable mobile communication terminal is mainly divided into two types, one is based on PWM (pulse width modulation) technology, and uses frequency information to directly drive the ringing mode of the buzzer (buzzer). Easy and low cost, it has been widely used in various portable mobile communication terminals. But because this type of terminal is a highly personalized consumer product, people need more soft and melodious ringtones to reflect their individuality...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04M1/57H04M1/72442
Inventor 刘伟
Owner LENOVO (BEIJING) LTD
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