JPH0946399A - Cordless telephone set - Google Patents

Abstract

PROBLEM TO BE SOLVED: To adjust incoming sound volume without providing an exclusive incoming sound adjusting circuit and to reduce the cost of a device, in a cordless telephone set having a sound processing part provided with a scramble circuit and a sound volume adjusting circuit. SOLUTION: Between the output of a radio processing part 105 and the input of a sound processing part 106, a first switch 113 is provided. The output of an incoming sound source 112 is connected with the first switch 113 and the scramble function of the sound processing part 106 is stopped when the first switch 113 connects the output side of the incoming sound source 112 and the input side of the sound processing part 106. Thus, incoming sound can be adjusted by the sound processing part 106.

Description

Detailed Description of the Invention

[0001]

[0001] The present invention relates to a cordless telephone.

[0002]

2. Description of the Related Art Recent voice processing ICs for cordless telephones
Includes a voice processing IC 106 having both a scramble function and a volume control function.

FIG. 6 is a block diagram showing the construction of a conventional cordless telephone handset 601 using the voice processing IC 106.

As shown in the figure, the slave unit 601 is the slave unit 6
01 slave unit control unit 602 for controlling the whole, a RAM 603 for storing various data, an antenna 104 for transmitting and receiving radio signals, a radio processing unit 105 for radio processing audio signals, and a scramble circuit 107. , A voice processing IC 106 having a modulation level adjusting circuit 108 and a demodulation level adjusting circuit 109, and a microphone 110 for transmission.
A receiver speaker 111, an incoming sound source 112 for outputting a ring tone, an incoming volume control circuit 604 for adjusting the volume of the incoming tone, and a switch C605.

In the voice processing IC 106, the radio processing unit 10
The scrambled audio signal from 5 is removed and the volume is adjusted. Further, the volume of the ring tone is adjusted by the ring volume control circuit 604.

On the other hand, FIG. 7 shows a case where the cordless telephone 601 of FIG. 6 is provided with a speaker 305 for ringing tone and is separated from the speaker 111 for receiving voice.
2 is a block diagram showing a configuration of No. 1.

[0007]

However, in the above conventional example, the demodulation level adjusting circuit 1 is included in the voice processing IC 106.
However, since the ring tone adjusting circuit 604 is separately provided, there is a disadvantage that the cost is increased accordingly.

It is an object of the present invention to provide a cordless telephone which can adjust the ring tone volume without providing a dedicated ring tone adjusting circuit and can reduce the cost of the device.

[0009]

The present invention has a radio processing section, a voice processing section having a scramble circuit and a volume control circuit, a first speaker and an incoming sound source. The output is connected to the input of the voice processing unit,
In the cordless telephone in which the output of the voice processing unit is connected to the input of the first speaker, a first switch is provided between the output of the wireless processing unit and the input of the voice processing unit, When the output is connected to the first switch and the first switch is connecting the output side of the incoming sound source and the input side of the voice processing unit, the scramble function of the voice processing unit is stopped. Is characterized by.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram showing the configuration of a cordless telephone handset 101 according to a first embodiment of the present invention.

As shown, the slave unit 101 is
01 slave unit control unit 102 for controlling the whole, RAM 103 for storing various data, antenna 104 for transmitting and receiving wireless signals, wireless processing unit 105 for wirelessly processing voice signals, and scramble circuit 107. , A voice processing IC 106 having a modulation level adjusting circuit 108 and a demodulation level adjusting circuit 109, and a microphone 110 for transmission.
And a speaker 111 for receiving a call, an incoming sound source 112 for outputting a ring tone, and a switch A113.

Further, 106INa and 106IN in the figure
b, 106OUTa, 106OUTb are voice processing ICs.
Reference numeral 106INa denotes an input / output unit, 106INa denotes a modulation side input, 106INb denotes a demodulation side input, and 106OU.
Ta is the output on the modulation side, and 106OUTb is the output on the demodulation side.

Scramble circuit 1 of voice processing IC 106
07 performs a process of scrambling the signal from the input 106INa on the modulation side, and outputs 106OU on the modulation side.
The signal from the input 106 INb on the demodulation side is descrambled, and the output 106 on the demodulation side is output.
Processing for outputting to OUTb is performed.

The voice processing IC 106 may not operate the scramble circuit 107, and whether or not to operate the scramble circuit 107 can be determined by setting the voice processing IC 106. In this embodiment, the frequency inversion method is used as the scrambling method.

The modulation level adjusting circuit 108 of the voice processing IC 106 changes the level of the signal from the modulation side input 106INa and outputs it to the modulation side output 106OUTa. Demodulation level adjustment circuit 107 of voice processing IC 106
Changes the level of the signal from the input 106INb on the demodulation side and outputs it to the output 106OUTb on the demodulation side. The adjustment levels of the modulation level adjusting circuit 108 and the demodulation level adjusting circuit 109 can be determined by setting the voice processing IC 106.

Next, in the first embodiment of the present invention, a flow of a voice signal received from a master unit (not shown) when the cordless telephone slave unit 101 is in a call will be described.

The voice signal from the master unit is input to the radio processing unit 105 via the antenna 104. After the audio signal is wirelessly processed by the wireless processing unit 105, the audio signal is input to the input 106INb on the demodulation side of the audio processing IC 106 through the switch A113. At this time, switch A
Reference numeral 113 is connected to the SWAa side so as to connect the wireless processing unit 105 and the voice processing IC 106.

The audio signal input to the audio processing IC 106 is scrambled by the scramble circuit 10 in the audio processing IC 106.
7. Output 1 on the demodulation side, passing through the demodulation level adjustment circuit 108
It is output to 060UTb. Since the voice signal from the base unit is scrambled, the setting for operating the scramble circuit 107 of the voice processing IC 106 is set to the handset control unit 1.
02, and descramble the audio signal.

Demodulation level output 10 of voice processing IC 106
The audio signal output from 6OUTb is sent to the speaker 111. Here, the reception volume of the voice heard from the speaker 111 is adjusted by setting the adjustment level of the demodulation level demodulation circuit 109 from the slave unit control unit 102.

Next, the flow of the incoming call tone in the first embodiment will be described.

The incoming call sound generated by the incoming call sound source 112 is input to the input 106INb on the demodulation side of the voice processing IC 106 through the switch A113. At this time, switch A
113 is connected to the SWAb side so as to connect the incoming sound source 112 and the voice processing IC 106. Voice processing IC
The audio signal input to 106 is scrambled by the scrambling circuit 107 and demodulation level adjusting circuit 10 in the audio processing IC 106.
8 and is output to the output 106OUTb on the demodulation side.

Since the ring tone is not scrambled, the scramble circuit 1 of the voice processing IC 106 is used.
The setting for not operating 07 is set from the handset controller 102,
The ringtone is output without being scrambled.

Demodulation level output 10 of voice processing IC 106
The audio signal output from 6OUTb is sent to the speaker 111. Here, the adjustment of the incoming call volume heard from the speaker 111 is performed by the demodulation level adjusting circuit 1 from the slave unit controller 102.
This is done by setting an adjustment level of 09.

By carrying out the first embodiment described above,
Voice processing IC in cordless phone handset 101
When the voice processing IC 106 having both the scramble function and the level adjusting function is used, the level adjusting circuit for the ringing tone is not required, and the number of parts can be reduced and the cost can be reduced.

Further, since the voice processing IC 106 having a scramble function is used and scramble is applied during the call, the scramble removal processing must be performed. However, when the ring tone is sounded, the scramble removal is performed. Since the processing is not performed, it is possible to ring the ringing tone that has not been subjected to the scramble removal processing.

FIG. 2 is a block diagram showing the construction of a cordless telephone handset 201 according to a second embodiment of the present invention.

As shown in the figure, the slave unit 201 is
01 has a slave unit control unit 202 for controlling the whole, a RAM 203 for storing various data, and a scramble button 204. Others are common to the first embodiment (FIG. 1).

The second embodiment has a scramble on mode and a scramble off mode, and the two modes can be switched by pressing the scramble button 204.

When the scramble-on mode is changed to the scramble-off mode, the slave unit 201 sends a scramble-off message to the master unit to notify the scramble-off.

When making a transition from the scramble off mode to the scramble on mode, the slave unit 201 sends a scramble on message to the master unit to notify the scramble on.

Next, in the second embodiment, the flow of a voice signal received from the master unit when the slave unit 201 of the cordless telephone is in a call will be described.

The voice signal from the master unit is input to the radio processing unit 105 via the antenna 104. This audio signal is input to the input 106INb on the demodulation side of the audio processing IC 106 through the switch A113 after the audio signal is wirelessly processed by the wireless processing unit 105. At this time, the switch A113 causes the wireless processing unit 105 and the voice processing IC 106 to operate.
Is connected to the SWAa side.

Then, the audio signal input to the audio processing IC 106 passes through the scramble circuit 107 and the demodulation level adjusting circuit 108 in the audio processing IC 106 and is output to the output 106OUTb on the demodulation side.

Here, in the scramble-on mode,
Since the voice signal from the master unit is scrambled, the slave unit controller 202 is set to operate the scramble circuit 107 of the voice processing IC 106 to descramble the voice signal. In the scramble-off mode, the audio signal from the master is not scrambled, so the scramble circuit 10 of the audio processing IC 106 is used.
The slave unit control unit 202 is set to disable 7 so that the audio signal is output without being scrambled.

The audio signal output from the demodulation level output 106OUTb of the audio processing IC 106 is the speaker 1
It is sent to 11. The reception volume of the voice heard from the speaker 111 is adjusted by setting the adjustment level of the demodulation level adjustment circuit 109 from the handset controller 202.

Next, the flow of the ringing tone in the second embodiment will be described.

The ringing tone generated by the ringing tone generator 112 is input to the input 106INb on the demodulation side of the voice processing IC 106 through the switch A113. At this time, switch A
113 is connected to the SWAb side so as to connect the incoming sound source 112 and the voice processing IC 106. Then, the audio signal input to the audio processing IC 106 is the audio processing IC 10
6, the signal passes through the scramble circuit 107 and the demodulation level adjusting circuit 108 and is output to the output 106OUTb on the demodulation side.

Since the ring tone is not scrambled, the scramble circuit 10 of the voice processing IC 106 is used.
The handset control unit 202 is set not to operate 7 so that the ringtone is output without being scrambled.

Next, the audio signal output from the demodulation level output 106OUTb of the audio processing IC 106 is the speaker 11
Sent to 1. Then, the incoming call volume heard from the speaker 111 is adjusted by setting the adjustment level of the demodulation level adjustment circuit 109 from the slave unit control section 202.

According to the second embodiment as described above, when the voice processing IC 106 having both the scramble function and the level adjusting function is used as the voice processing IC in the cordless telephone handset 201, the level adjustment for the ring tone is performed. The effect is that no circuit is required.

Further, the voice processing IC 106 having the scramble function is used. Since the scramble is applied during the call in the scramble on mode, the scramble removal process must be performed, but the ring tone is sounded. In this case, since the scramble removal processing is not performed, the ring tone without the scramble removal processing can be sounded regardless of the scramble on mode / scramble off mode.

FIG. 3 is a block diagram showing the configuration of a cordless telephone handset 301 according to a third embodiment of the present invention.

In the figure, the slave unit 301 is the slave unit 30.
1 has a slave unit control unit 302, a RAM 303 for storing various data, and a switch B304. Others are common to the first embodiment (FIG. 1).

Next, in the third embodiment, the flow of the voice signal received from the master unit when the slave unit 301 of the cordless telephone is busy will be described.

The voice signal from the base unit is input to the radio processing section 105 via the antenna 104. After the audio signal is wirelessly processed by the wireless processing unit 105, the audio signal is input to the input 106INb on the demodulation side of the audio processing IC 106 through the switch A113. At this time, switch A
Reference numeral 113 is connected to the SWAa side so as to connect the wireless processing unit 105 and the voice processing IC 106.

Next, the audio signal input to the audio processing IC 106 is scrambled by the scramble circuit 10 in the audio processing IC 106.
7. Output 1 on the demodulation side, passing through the demodulation level adjustment circuit 108
It is output to 06OUTb. Since the audio signal from the parent device is scrambled here, the audio processing IC 10
Setting for operating the scramble circuit 107 of No. 6 is performed from the slave unit control unit 302 to descramble the audio signal.

Next, the audio signal output from the demodulation level output 106OUTb of the audio processing IC 106 is output to the switch B.
It is sent to the speaker 111 through 304. At this time,
The switch B304 includes the voice processing IC 106 and the speaker 1.
11 is connected to the SWBa side.

Further, the reception volume of the voice heard from the speaker 111 is adjusted by setting the adjustment level of the demodulation level adjusting circuit 109 from the slave unit controller 302.

Next, the flow of the ringing tone in the third embodiment will be described.

The ringing tone generated by the ringing tone generator 112 is input to the input 106INb on the demodulation side of the voice processing IC 106 through the switch A113. At this time, switch A
113 is connected to the SWAb side so as to connect the incoming sound source 112 and the voice processing IC 106.

Then, the audio signal input to the audio processing IC 106 is output to the output 106OUTb on the demodulation side through the scramble circuit 107 and the demodulation level adjusting circuit 108 in the audio processing IC 106.

Since the ring tone is not scrambled, the scramble circuit 10 of the voice processing IC 106 is used.
7 is set not to operate from the handset controller 302, and the ringtone is output without being scrambled.

Next, the audio signal output from the demodulation level output 106OUTb of the audio processing IC 106 is output to the switch B.
It is sent to the speaker 305 for ringtone through 304. At this time, the switch B304 is connected to the SWBb side so as to connect the voice processing IC 106 and the ringtone speaker 305. The incoming call volume heard from the ringtone speaker 305 is adjusted by setting the adjustment level of the demodulation level adjustment circuit 109 from the slave unit controller 302.

According to the third embodiment described above, when the voice processing IC 106 having both the scramble function and the level adjusting function is used as the voice processing IC in the cordless telephone handset 301, the level adjusting circuit for the ringing tone is used. There is an effect that is unnecessary.

Further, since the voice processing IC 106 having the scramble function is used and scramble is applied during the call, the scramble removal process must be performed. However, when the ring tone is sounded, the scramble removal is performed. Since the processing is not performed, it is possible to ring the ringing tone that has not been subjected to the scramble removal processing.

FIG. 4 is a block diagram showing the construction of a cordless telephone handset 401 according to a fourth embodiment of the present invention.

In the figure, a slave unit 401 has a slave unit control section 402 for controlling the slave unit 401 and an R for storing various data.
It has an AM 403 and a scramble button 404.
Others are common to the first embodiment (FIG. 1).

The fourth embodiment has a scramble on mode and a scramble off mode, and the two modes can be switched by pressing the scramble button 404.

When transitioning from the scramble on mode to the scramble off mode, the slave unit 401 sends a scramble off message to the master unit to notify the scramble off.

When the scramble-off mode is changed to the scramble-on mode, the slave unit 401 sends a scramble-on message to the master unit to notify that the scramble is on.

Next, in the fourth embodiment, the flow of the voice signal received from the master unit when the slave unit 401 of the cordless telephone is busy will be described.

The voice signal from the master unit is input to the radio processing section 105 via the antenna 104. This audio signal is input to the input 106INb on the demodulation side of the audio processing IC 106 through the switch A113 after the audio signal is wirelessly processed by the wireless processing unit 105. At this time, the switch A113 causes the wireless processing unit 105 and the voice processing IC 106 to operate.
Is connected to the SWAa side.

Then, the audio signal input to the audio processing IC 106 is scrambled by the scramble circuit 1 in the audio processing IC 106.
07, through the demodulation level adjusting circuit 108, and output to the output 106OUTb on the demodulation side.

Here, in the scramble on mode,
Since the audio signal from the base unit is scrambled, the setting for operating the scramble circuit 107 of the audio processing IC 106 is set from the handset controller 402 to descramble the audio signal. In the scramble-off mode, the audio signal from the master is not scrambled, so the scramble circuit 10 of the audio processing IC 106 is used.
The slave unit control unit 402 is set to disable 7 to output the audio signal without performing the scramble process.

Next, the audio signal output from the demodulation level output 106OUTb of the audio processing IC 106 is output to the switch B.
It is sent to the speaker 111 through 304. At this time,
Switch B304 voice processing IC 106 and speaker 111
Is connected to the SWBa side. Further, the reception volume of the voice heard from the speaker 111 is adjusted by setting the adjustment level of the demodulation level adjustment circuit 109 from the slave unit controller 402.

Next, the flow of the ringing tone in the fourth embodiment will be described.

The ring tone generated by the ring tone source 112 is input to the input 106INb on the demodulation side of the voice processing IC 106 through the switch A113. At this time, switch A
Reference numeral 113 is connected to the SWAb side so as to connect the incoming sound source 112 and the voice processing IC 106.

Then, the audio signal input to the audio processing IC 106 passes through the scramble circuit 107 and the demodulation level adjusting circuit 108 in the audio processing IC 106 and is output to the output 106OUTb on the demodulation side.

Since the ring tone is not scrambled, the scramble circuit 10 of the voice processing IC 106 is used.
The handset control unit 402 is set to disable 7 so that the ringtone is output without being scrambled.

The audio signal output from the demodulation level output 106OUTb of the audio processing IC 106 is the switch B.
It is sent to the speaker 305 for ringtone through 304. Further, the adjustment of the incoming call volume heard from the ringtone speaker 305 is performed by the slave unit control unit 402 through the demodulation level adjustment circuit 109.
This is done by setting the adjustment level of.

According to the above fourth embodiment, when the voice processing IC 106 having both the scramble function and the level adjusting function is used as the voice processing IC in the cordless telephone handset 401, the level adjusting circuit for the ringing tone is used. There is an effect that is unnecessary.

Further, since the voice processing IC 106 having the scramble function is used and scramble is applied during the call in the scramble on mode, the scramble removal process must be performed, but the ring tone sounds. In this case, since the scramble removal processing is not performed, it is possible to ring the ring tone that has not been scramble removed regardless of the scramble on mode / scramble off mode.

In each of the above embodiments, as the voice processing IC, a voice processing IC with a built-in switch shown in FIG. 5 is used.
The same effect can be obtained by using 501.

Further, in each of the above embodiments, FIGS.
If the voice processing IC 106 shown in FIG.
Even if not, the same effect can be obtained.

[0075]

As described above, according to the present invention,
When a voice processing unit having both a scramble function and a level adjusting function is used in a cordless telephone handset, a volume adjusting circuit for a ring tone is not required, and the cost of the device can be reduced.

[Brief description of drawings]

FIG. 1 is a block diagram showing a first embodiment of the present invention.

FIG. 2 is a block diagram showing a second embodiment of the present invention.

FIG. 3 is a block diagram showing a third embodiment of the present invention.

FIG. 4 is a block diagram showing a fourth embodiment of the present invention.

FIG. 5 is a block diagram showing a fifth embodiment of the present invention.

FIG. 6 is a block diagram showing a conventional example.

FIG. 7 is a block diagram showing another conventional example.

[Explanation of symbols]

 101, 201, 301, 401 ... Slave unit, 102, 202, 302, 402 ... Slave unit control unit, 103, 203, 303, 403 ... RAM, 104 ... Antenna, 105 ... Wireless processing unit, 106, 501 ... Voice processing IC, 107 ... Scramble circuit, 108 ... Modulation level adjusting circuit, 109 ... Demodulation level adjusting circuit, 110 ... Microphone, 111 ... Speaker, 112 ... Incoming sound source, 113 ... Switch A, 204, 404 ... Scramble button, 304 ... Switch B .

Claims (2)

[Claims] 1. A wireless processing unit, an audio processing unit including a scramble circuit and a volume control circuit, a first speaker, and an incoming sound source, and the output of the wireless processing unit is the input of the audio processing unit. In the cordless telephone connected to the input of the first speaker, the output of the voice processing unit is connected to, a first switch is provided between the output of the wireless processing unit and the input of the voice processing unit, The output of the incoming sound source is the first
Cordless, characterized in that when the first switch is connecting the output side of the incoming sound source and the input side of the voice processing unit, the scramble function of the voice processing unit is stopped. Telephone. 2. The cordless telephone according to claim 1, wherein a second speaker is provided, and a second switch is provided between the output of the voice processing unit and the input of the first speaker, and the second switch is provided. When the input of the speaker is connected to the second switch and the first switch is connecting the output side of the incoming sound source and the input side of the voice processing unit, the second switch outputs the output of the voice processing unit. A cordless telephone, characterized in that it is connected to the input side of the second speaker.