Unlock instant, AI-driven research and patent intelligence for your innovation.

Communications terminal

A communication terminal and volume technology, which is applied in telephone communication, electrical components, branch equipment, etc., can solve problems such as hidden safety hazards, cumbersome, and aggravating difficulties.

Inactive Publication Date: 2004-04-07
QUALCOMM INC
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] This manual correction is more or less cumbersome, and the menu-controlled adjustment process requires viewing the display area of ​​​​the terminal device, which must therefore interrupt communication at least temporarily
[0004] In addition, the calibration process must be re-performed every time there is a large change in the ambient volume, which ultimately makes it much more difficult to make smooth and focused calls
Finally, in some cases, such as while driving a vehicle or operating machinery, the necessity to manually correct the listening volume involves a degree of safety hazard

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Communications terminal
  • Communications terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] In addition to being connected to the low-frequency amplification stage 7, the low-frequency signal input 7a is also connected to the low-frequency level control stage 11 through an electronically controllable switch 9, and the output terminal of the control stage 11 is connected to the first low-frequency amplification stage 7. A control input 7b.

[0022] The microphone 5 is connected via an electronically controllable second switch 13 to a voltage measuring device 15, which is used to determine the current voice volume level at the microphone 5a. The output of the voltage measuring device 15 is connected to an averaging stage 17, which in turn is connected via a control input to the output of an averaging interval regulator 19. The output side of the averaging stage 17 is connected on the one hand to an amplifier control stage 21 and on the other hand to an input of a speech level comparison unit 23 . The other input terminal of the level comparison unit 23 is conne...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A communications terminal, in particular a mobile radio station, having an AF amplifier stage, which includes a gain adjustment for adjusting the gain factor as a function of the speech volume.

Description

technical field [0001] The invention relates to a communication terminal, which has a microphone, an earphone, a low-frequency amplification stage and an amplification adjustment device for changing the amplification factor of the low-frequency amplification stage to adjust the listening volume. Background technique [0002] In the past, telephone communication usually started from static terminals, and these terminals were mostly installed in places (in rooms, telephone units) that were better shielded from ambient noise, and with the rapid development of mobile wireless phones The epidemic then presents the problem of having to establish and maintain telephone communications under extremely adverse and rapidly and strongly changing acoustic conditions. Therefore, the low-frequency amplification stages of modern terminal equipment, especially mobile radio equipment, are equipped with manually or menu-controlled tools for adjusting the volume of the earphones. Using corresp...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04M1/60
CPCH04M1/6016
Inventor W·克吕格尔
Owner QUALCOMM INC