KR100207819B1 - Telephone for inaudibles - Google Patents

Abstract

[TECHNICAL FIELD OF THE INVENTION]

This is a technology that adjusts the volume of the incoming call while talking on the telephone.

[Technical Problem]

When it is difficult to listen to a voice to receive a caller during a call, the received voice signal is amplified to a hearing-impaired audible level and outputted to the receiver.

[Summary of the Invention]

If the speech signal is not audible during the call, the hearing aid protection key is pressed to output the speech signal amplified to the hearing aid audible level, which is the level that the hearing aid can hear by the hearing aid selection relay.

[Important Application of the Invention]

Phone for hearing impaired.

Description

Telephone for the hearing impaired

FIG. 1 is a block diagram of a typical telephone.

FIG. 2 is a circuit diagram of a telephone for a hearing impaired user according to an embodiment of the present invention; FIG.

The present invention relates to a telephone for a hearing impaired person, and more particularly to a telephone for a hearing impaired person who amplifies a sign language speech signal to a predetermined level and outputs it through a telephone receiver when it is difficult to listen to a received speech signal.

FIG. 1 is a block diagram of a typical telephone.

The rectifying unit 10 outputs the trunk line voltage input from the Tip and Ring terminals of the trunk line by polarity alignment. The ring detector 24 detects a ring signal input from the tip and ring terminal of the trunk line and outputs a ring detection signal. The key input unit 26 has a dial digit key and various function keys. The key input unit 26 generates a key signal corresponding to the key input by the user, and outputs the generated key signal to the MPU 28. The MPU 28 receives a key signal output from the key input unit 26, performs a control operation corresponding thereto, and outputs a call control signal. The call control unit 30 includes a hook switch 12 and detects a call control signal of the MPU 28 or a state of the hook switch 12, that is, a hook-off state or a hook-on state, . The call connection unit 20 connects the call control unit 30 and the handset. The call control unit 30 outputs a voice signal to the handset 22 when the call connection is established. The dialing unit 18 receives the dialing digit key signal according to the dial number output from the MPU 28, and performs dialing.

An external caller dials to call the telephone device of the first aspect and sends out 20 The ring detector 24 detects the ring signal and provides it to the MPU 28. At this time, in a ringer circuit not shown, the received ring signal is converted into an audible signal, . At this time, when the user hears the ring signal and turns on the hook switch 12 by turning on the handset, the transistor 14 of the call control unit 30 is turned on and the transistor 16 is also turned on to form a communication path. In this way, calls are made through the handset 22 and the handset 22, which are connected to the caller 20 by means of an external caller.

However, the above-mentioned conventional telephone has a problem in that when the voice of the other party is not heard well or the voice of the party is not heard according to the length of the line and the state of the line during the call, the voice of the other party can not be heard at all.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a telephone for a hearing impaired person who amplifies a sign language speech signal to a predetermined level and outputs the received signal through a telephone receiver when it is difficult to listen to a received speech signal.

According to another aspect of the present invention, there is provided a telephone for a hearing impaired having a call path unit for outputting a speech signal received when a call path is formed to a handset, A key input unit for generating a key signal corresponding to a key input by the user, and a key input unit for inputting a hearing aid protection key signal from the key input unit, the key input unit including various function keys such as a hearing aid protection key for generating a command for amplifying the hearing aid- A received speech signal amplified to a hearing-impaired audible level when receiving an input, and a sign language speech signal output from the speech signal portion during a normal call is selected A hearing aid amplifier circuit for amplifying and outputting a received speech signal output from the call channel unit to a hearing impaired audible level and outputting a relay selection signal corresponding to a relay selection signal output from the control unit; And a deactivation selection relay for selecting one of a hydration loudness signal outputted from the communication unit and a hydration loudness signal amplified from the hearing aid amplifier circuit, and outputting the selected signal to the receiver.

Best Mode for Carrying Out the Invention Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the same parts of the drawings denote the same reference numerals whenever possible.

FIG. 2 is a circuit diagram of a telephone for a hearing impaired user according to an embodiment of the present invention.

The rectifying unit 10 outputs the trunk line voltage input from the Tip and Ring terminals of the trunk line by polarity alignment. The ring detector 24 detects a ring signal input from the tip and ring terminal of the trunk line and outputs a ring detection signal. The key input unit 26 has various function keys such as a plurality of dialing digit keys and a hearing aid protection key for generating a command for amplifying the hydration volume, generates a key signal corresponding to a key input by the user, and outputs the generated key signal to the MPU 28 .

The MPU 28 inputs a key signal output from the key input unit 26, performs a control operation corresponding to the key signal, and outputs a call control signal. When the hearing aid protection key signal is inputted from the key input unit 26, . The call control unit 30 includes a hook switch 12 and connects or disconnects the call path according to a call control signal of the MPU 28 or a state of the hook switch 12, that is, a hook-off or a hook-on state. The call unit 20 connects the call control unit 30 and the handset. When the call control unit 30 connects the call control unit 30, the call control unit 30 outputs the received voice signal to the handset 22. The dialing unit 18 receives the dialing digit key signal according to the dial number output from the MPU 28, and performs dialing.

The hearing aid selection relay 32 selects a normal hydration volume signal or an amplified hydration volume signal according to the relay selection signal outputted from the MPU 28 and outputs it to the receiver 22. [ The hearing aid amplifier circuit 34 amplifies the received speech signal output from the speaking circuit section 20 to a hearing impaired audible level, which is a level that can be heard by the hearing impaired person, and amplifies the received speech signal, for example, by about 20 dB. The volume control switch 36 adjusts the volume of the received speech signal amplified from the hearing aid amplifier circuit 34 according to the selection of the receiver.

The DSP (Digital Signal Processor) 38 can be implemented by D6385A, manufactured and sold by DSP Group, USA, and controls the feedback signal to prevent howling. The amplifying unit 40 amplifies the incoming speech signal output from the DSP 38 to a predetermined level and outputs the amplified speech signal to the one end of the deaf-blind selection relay 32.

An external caller dials and calls a telephone device such as the second telephone number 20 The ring detector 24 detects the ring signal and provides it to the MPU 28. At this time, in a ringer circuit not shown, the received ring signal is converted into an audible signal, . At this time, when the user hears the ring signal and turns on the hook switch 12 by turning on the handset, the transistor 14 of the call control unit 30 is turned on and the transistor 16 is also turned on to form a communication path. In this way, calls are made through the handset 22 and the handset 22, which are connected to the external caller,

When making a call in this manner, the hearing-aid selection relay 32 causes the handset 22 to selectively output a handset input from the handset 20 to the handset. However, if the caller is difficult to listen to the incoming call voice signal or if the caller is a person with a hearing loss, the caller presses the hearing aid protection key of the key input unit 20, and the MPU 28 outputs the relay selection signal to the selection terminal of the hearing aid selection relay 32. Thus, the hearing aid selection relay 32 selects the signal amplified from the amplification unit 40 to be output to the handset 22. Therefore, the hearing aid amplifying circuit 34 amplifies the input speech signal output from the call-up section 20 to a hearing-impaired audible level, which is a level that can be heard by the hearing impaired person, and amplifies the received speech signal by, for example, Output. The volume control switch 36 adjusts the volume of the received speech signal amplified by the hearing aid amplifier circuit 34 according to the selection of the receiver. In other words, when the volume of the hydration voice (the other party's voice) output from the hearing aid amplifier circuit 34 is too large or the hydration volume is to be slightly increased, the volume is manually adjusted appropriately. At this time, the DSP 38 controls so that the received speech output to the receiver 22 is input to the transmitter, not shown, and feedback is not generated due to feedback to the receiver 22. The received speech signal, which is controlled so as not to generate howling from the DPS 38, is amplified to a predetermined level through the amplifying unit 40 and outputted to the handset 22 so that a hearing impaired person can smoothly communicate.

As described above, according to the present invention, when the hearing aid's voice is not audibly heard during a telephone call, the amplified speech signal is selected when the hearing aid protection key is pressed. At this time, the volume of the selected speech signal is adjusted to a desired level (Seniors) can not hear the other party's voice and can not prevent a call from being made during a telephone conversation.

Claims (3)

A telephone for a hearing impaired person having a telephone call section for outputting a voice signal received when a telephone call is formed to a telephone receiver, the telephone for a hearing impaired, comprising: a command for amplifying a received speech volume signal to a hearing aid audible level, A key input unit for generating a key signal corresponding to a key input by a user and a key input unit for inputting a key for the hearing aid protection key signal, A voice signal is selected as a sign language voice signal output from the call during a normal call A hearing aid amplifier circuit for amplifying and outputting a received speech signal output from the call channel unit to a hearing impaired audible level and outputting a relay selection signal corresponding to a relay selection signal output from the control unit; And a deactivation selection relay for selecting one of a hydration loudness signal output from the speech part or a hydration loudness signal amplified from the hearing aid amplification circuit and outputting the selected signal to the handset. The apparatus according to claim 1, further comprising a volume adjusting unit for adjusting a level of the received speech signal to a desired level by a speaker when the level of the received speech signal amplified by the receiver is high or low, Phone for. The digital signal processor according to claim 1, further comprising a digital signal processor for controlling a hydration volume signal output from the volume controller to remove a hauling phenomenon caused by the input of the hydrated voice signal into the transmitter and feedback to the receiver And a telephone for a person with a hearing loss.