JP3289453B2 - Signal switching device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a signal switching device for switching an output destination of a sound or a signal sound in a telephone or the like.

[0002]

2. Description of the Related Art In recent years, some electric circuits such as telephones are provided with a signal switching device in a circuit portion for transmitting voice, signal sound, and the like, and perform signal switching according to applications.

[0003] A conventional signal switching device will be described below. FIG. 7 is a configuration diagram of a conventional signal switching device, and FIG. 8 is a configuration diagram of an audio processing unit of a receiving circuit of a cordless telephone handset using the conventional signal switching device. Reference numeral 1 denotes an input unit for transmitting signals such as voice and control data to a control unit and a signal switching unit to be described later, and 2 denotes whether an input signal from the input unit 1 is a specific signal, for example, incoming call data or the like. The control unit 3 performs various controls such as generating a new signal corresponding to the judgment process and a specific signal at the time of inputting the signal, for example, outputting a bell signal, and outputting the signal to another circuit. A signal switching unit for switching an input signal of the input unit to an output unit or an external connection unit described later by mechanical or electrical connection;
And an output unit 5 for outputting either the signal from the control unit 2 or a signal newly generated by the control unit 2 to the next-stage circuit. And an external connection unit for outputting a signal from the input unit 1 or the control unit 2 to the external device 6 in place of the output unit 4. The external connection unit 6 is connected to the external connection unit 5 for voice, data sound, and signal sound. Etc. to the user. In FIG. 8, 7
Is an input circuit section comprising an electric circuit, printed wiring, terminals and the like in the electric circuit, and constitutes the input section 1. Reference numeral 8 is a processing for judging a specific signal in the input signal, for example, incoming data indicating that a call is received. A control circuit unit comprising a microcomputer or the like which generates and outputs a bell sound or the like based on the determination result, and constitutes the control unit 2. A signal switching circuit unit 9 is attached to the earphone jack 11 and constitutes the signal switching unit 3.
Denotes a speaker constituting the output unit 4, and 12 denotes an earphone as the external device 6.

Here, when the earphone 12 is connected to the earphone jack 11, the signal switching circuit 9 is connected to the Y side.

The operation of the signal switching device configured as described above will be described below. In FIG.
When the earphone 12 is connected to the earphone jack 11, the signal from the input circuit unit 7 and the signal newly generated by the control circuit unit 8 which is the control unit 2 are connected to the earphone jack 1.
1 is output to the earphone 12. Now, when a data signal indicating an incoming call comes in from the input circuit unit 7 from the base unit (not shown) of the cordless telephone, the control circuit unit 8 performs a process of determining the incoming call data, and the result of the determination is the incoming signal. If it is determined that the ringing is true, a bell signal indicating an incoming call is generated and output to the signal switching circuit unit 9. The output bell signal passes through the signal switching circuit unit 9 and sounds a ringing bell sound from the earphone 12 via the earphone jack 11.

[0006]

However, in the above-described conventional configuration, the user may feel discomfort because the bell sounds suddenly from the earphones and may cause hearing impairment due to the loud bell sound. Had problems. Also, if the user does not wear earphones,
There is a problem in that it is not possible to answer an incoming call because a bell sound cannot be heard. Therefore, the user has to reduce the volume of the earphone in the state of waiting for reception and adjust the volume of the earphone every time an incoming call is received, which has a problem that the operation is troublesome and lacks in operability. In addition, when the earphone is used, power is always supplied to the low-frequency amplifying unit and the like that are not used, and the battery is consumed.

The present invention solves the above-mentioned conventional problems. When a specific signal such as incoming call data is received when an external device such as an earphone is connected, a call bell or the like from the control unit is output to the external device. A signal that prevents the user from feeling uncomfortable by using a speaker or the like at the output unit, and supplies power to the amplifier circuit that consumes a large amount of power only when necessary, thereby reducing unnecessary power consumption. It is an object to provide a switching device.

[0008]

According to a first aspect of the present invention, there is provided a signal switching device for inputting a voice or data signal, wherein the signal from the input unit is a specific signal. In some cases, a control unit that generates a new signal corresponding to the specific signal, an external connection unit to which an external device is connected, and a signal from the control unit when an external device is connected to the external connection unit The signal switching device according to claim 2 has a configuration including a signal switching unit that switches a transmission destination to an output unit or the external connection unit. The signal switching device according to claim 2 amplifies a signal from the control unit in claim 1. An amplifier includes: a power switching unit that supplies and cuts off power to the amplification unit; and a control unit that has a power switching instruction unit that instructs the power switching unit to supply and cut off power. are doing.

Here, the specific signal from the input unit is:
Incoming call data or the like indicating an incoming call is received. In the case of these signals, the signal is not output to the external device by the signal transmission switching means but output to the internal speaker, so that the user does not feel uncomfortable. The power switching unit is configured with a relay circuit or the like to supply power only when necessary to an amplifier circuit unit or a filter unit that consumes a large amount of power. The power switching unit uses a relay drive signal or the like as power switching instruction means from the control unit. It supplies and shuts off power to the amplification unit and the like. The signal switching unit may be switched by connecting an external device to the external connection unit, for example, by a mechanical connection such as an earphone jack, or may be configured by an electric circuit or a combination thereof.

[0010]

With this configuration, the control unit switches the output destination of the signal in accordance with the type and purpose of the output signal, so that the affinity and convenience can be improved without giving the user any discomfort. Further, unnecessary power consumption can be suppressed by supplying power only to the amplifier circuit which consumes much power when necessary.

[0011]

(Embodiment 1) An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram of a signal switching device according to a first embodiment of the present invention, and FIG.
FIG. 11 is a configuration diagram of an audio processing unit of a receiving circuit of a cordless telephone handset using the signal switching device in the embodiment of FIG. 1
Denotes an input unit, 4 denotes an output unit, and 6 denotes an external device, which are the same as those in the conventional example, and are denoted by the same reference numerals and description thereof is omitted.
2a is an external connection unit 5a to be described later in addition to the conventional signal control.
When an external device 6 is connected to the control unit 3a, the control unit 3a has a function of directly outputting the bell signal at the time of an incoming call to the output unit 4 by the signal transmission switching unit without outputting it to the next signal switching unit 3a.
Is a control unit 2a based on a signal indicating the presence or absence of connection of the external device 6.
A signal switching unit 5a for switching a sound or a voice signal from the input unit 1 side to the output unit 4 side or the external connection unit 5a side through the control unit 2a and the signal switching unit 3a when the external device 6 is connected. The external connection unit has a function of outputting a signal indicating that the external device 6 is connected. In FIG.
Reference numeral 7 denotes an input circuit, reference numeral 10 denotes a speaker, and reference numeral 12 denotes an earphone, which are also the same as those in the conventional example. Reference numeral 8a denotes a control circuit for controlling a signal output destination depending on whether or not the earphone 12 is connected to the earphone jack 11a. Reference numeral 9a denotes a signal for switching a circuit to the speaker 10 or the earphone jack 11a depending on whether or not the external device 6 is connected. The switching circuit unit 11a is an earphone jack that outputs a signal indicating whether or not the earphone 12 is connected.

Here, the signal switching circuit section 9a can be constituted as a part of the earphone jack 11a.
When 2 is completely inserted into the earphone jack 11a, the circuit may be switched by mechanical connection. The signal indicating the presence or absence of the earphone 12 to the control circuit 8a may be from either the earphone jack 11a or the signal switching circuit 9a. When the earphone 12 is connected to the earphone jack 11a, the signal switching circuit 9a is connected to the Y side.

The operation of the signal switching device configured as described above will be described below. In FIG. 1, a signal input from the input unit 1 to the control unit 2a is subjected to a process of determining whether or not the signal is a specific signal in the control unit 2a. For example, when the signal is a data signal indicating an incoming call, the signal is output from the control unit 2a. A new ringing bell signal is sent to the unit 4. A normal signal is input to the signal switching unit 3a via the control unit 2a, and is transmitted to the external device 6 via the external connection unit 5a when the external device 6 is connected to the external connection unit 5a.

The above operation will be described with reference to FIG. 3 when an incoming call signal indicating a call from the base unit of the cordless telephone is present in the input circuit unit 7. FIG. 3 is a flowchart showing an example of the operation of the signal switching device according to the first embodiment of the present invention. It is checked whether the signal input from the input circuit unit 7 to the control circuit unit 8a is a data signal indicating an incoming call as a specific signal (S1). If No, the input signal is transferred to the signal switching circuit 9a as it is (S
2) If yes, the control circuit 8a generates a bell signal corresponding to the incoming call (S3). Next, it is checked whether the earphone 12 is connected to the earphone jack 11a (S4). If No, the bell signal is transferred to the signal switching circuit unit 9a (S6), and if Yes, the bell signal is directly transferred to the speaker 10 (S5), and the speaker 10
Sounds. At this time, no bell signal is output from the earphone 12 since no bell signal is output from the control circuit unit 8a to the signal switching circuit unit 9a. Normal sounds and voices can be heard by the earphone 12 through the input circuit 7, the control circuit 8a, the signal switching circuit 9a, and the earphone jack 11a.

As described above, according to the present embodiment, the output destination is divided according to the type of the input signal, so that a large volume such as a bell sound is directly output to the earphone to avoid discomfort to the user. be able to. Therefore, the user does not need to reduce the volume of the earphone in preparation for the bell sound when waiting for reception, so that operability can be significantly improved.

(Embodiment 2) FIG. 4 is a block diagram of a signal switching device according to a second embodiment of the present invention, and FIG. 5 is a block diagram of a cordless telephone using the signal switching device according to the second embodiment of the present invention. FIG. 3 is a configuration diagram of an audio processing unit of a reception circuit of the slave unit. The difference from the first embodiment is that a power switching unit is provided to supply power to an amplification unit for amplifying a signal or the like only when a signal or the like is output to the speaker 10. 2b is a power for controlling whether or not the signal from the input unit 1 is a specific signal, generating a new signal if the signal is a specific signal, transmitting the signal to the amplifier, and controlling power supply to the amplifier. A control unit having switching instruction means; 13, an amplification unit for performing necessary power amplification on the output unit 4; and 14, a power switching for supplying and shutting off power to the amplification unit 13 by the power switching instruction means from the control unit 2b. Department. In FIG. 5, reference numeral 15 denotes an amplifier constituting the amplifying section 13, 16 denotes a power switching circuit section constituting the power switching section 14, and 17 denotes a power supply section.

Here, the signal switching circuit section 9b can be configured as a part of the earphone jack 11b,
When 2 is completely inserted into the earphone jack 11b, the circuit may be switched by mechanical connection. The signal indicating the presence or absence of the earphone 12 to the control circuit 8b may be from either the earphone jack 11b or the signal switching circuit 9b.

The operation of the signal switching device configured as described above will be described below. First, a signal input from the input unit 1 to the control unit 2b is subjected to determination processing in the control unit 2b. When the input signal is a specific signal, the control unit 2b outputs the signal to the output unit 4b.
To send a new signal. Sounds and audio signals that are not specific signals are directly input to the signal switching unit 3b and transmitted to the external device 6 via the external connection unit 5b when the external device 6 is connected.

The above operation will be described with reference to FIG. 6 in the case where there is an incoming call signal indicating a call from the base unit of the cordless telephone. FIG. 6 is a flowchart showing an example of the operation of the signal switching device according to the second embodiment of the present invention. It is checked whether the signal input from the input circuit unit 7 to the control circuit unit 8b is a specific signal, for example, a data signal indicating an incoming call (S7). If No, the input signal is directly transferred to the signal switching circuit 9b (S8), and if Yes, the control circuit 8b generates a bell signal (S8).
9). Next, it is checked whether the earphone 12 is connected to the earphone jack 11b (S10). If No, the bell signal is transferred to the signal switching circuit 9b (S14).
If the answer is Yes, the control circuit unit 8b issues an instruction to supply power to the power switching circuit unit 16 that controls the supply of power to the amplifier 15 by the power switching instruction unit (S11). Next, the bell signal is transferred to the amplifier 15, and the speaker 10 sounds (S12). Next, when the output of the incoming call bell signal is completed, the control circuit unit 8b instructs the power switching circuit unit 16 to cut off the power supply to the amplifier 15 by the power switching instruction unit (S13).

As described above, according to this embodiment, a large volume such as a bell sound is output to the earphone by distinguishing between a sound output from the speaker and a sound output from the earphone, such as a ringing ringing sound. It can avoid discomfort to the person. In addition, during operation with only the earphone, the power consumption of the battery can be reduced by turning off the power of the speaker system amplifier and the like, and the battery-operated device such as a cordless telephone handset can extend the talkable time.

[0021]

As described above, according to the present invention, when an incoming call signal is received while waiting for reception with an earphone, the output destination of the bell signal is switched to a speaker, so that the incoming call bell sound is suddenly heard from the earphone. There is no discomfort to the user because there is no. Therefore, it is possible to prevent a hearing impairment due to a loud sound such as a bell sound. In addition, it is not necessary to reduce the volume of the earphone in preparation for ringing of the bell sound, and the operability can be significantly improved. Furthermore, when the speaker is not used, power is not supplied to the amplifier and the filter section, so that power consumption can be reduced, and the use of the earphone can extend the talkable time of the cordless telephone handset, etc., and is excellent in convenience and versatility. A signal switching device can be realized.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a signal switching device according to a first embodiment of the present invention.

FIG. 2 is a configuration diagram of an audio processing unit of a receiving circuit of a cordless telephone handset using the signal switching device according to the first embodiment of the present invention;

FIG. 3 is a flowchart showing an example of the operation of the signal switching device according to the first embodiment of the present invention;

FIG. 4 is a configuration diagram of a signal switching device according to a second embodiment of the present invention.

FIG. 5 is a configuration diagram of an audio processing unit of a receiving circuit of a cordless telephone handset using a signal switching device according to a second embodiment of the present invention.

FIG. 6 is a flowchart showing an example of the operation of the signal switching device according to the second embodiment of the present invention.

FIG. 7 is a configuration diagram of a conventional signal switching device.

FIG. 8 is a configuration diagram of an audio processing unit of a receiving circuit of a cordless telephone handset using a conventional signal switching device.

[Explanation of symbols]

 Reference Signs List 1 input unit 2, 2a, 2b control unit 3, 3a, 3b signal switching unit 4 output unit 5, 5a, 5b external connection unit 6 external device 7 input circuit unit 8, 8a, 8b control circuit unit 9, 9a, 9b signal Switching circuit section 10 Speaker 11, 11a, 11b Earphone jack 12 Earphone 13 Amplifying section 14 Power switching section 15 Amplifier 16 Power switching circuit section 17 Power supply section

Continuation of front page (56) References JP-A-2-184126 (JP, A) JP-A-3-280728 (JP, A) JP-A-5-83333 (JP, A) JP-A-1-321750 (JP) JP-A-1-3055753 (JP, A) JP-A-6-216978 (JP, A) JP-A-63-46826 (JP, A) JP-A-4-50943 (JP, U) (58) Field surveyed (Int.Cl. ⁷ , DB name) H04M 1/00 H04M 1/73 H04B ^7/ 24-7/26 H04Q ⁷ /00-7/38

Claims (2)

(57) [Claims] An input unit for receiving a voice or data signal; a control unit for generating a signal for calling according to the specific signal when the signal from the input unit is a specific signal ; a speaker for outputting a signal, and an external connecting portion of the external device such as an earpiece is connected to the input unit and the external device is connected to the external connection portion
Switch so that the input signal is output to an external device
A switching unit, and switching so that the switching unit outputs a signal to an external device.
Call corresponding to the specific signal even in the state
A signal switching device for outputting a signal for the following from the speaker . 2. An amplifying unit for amplifying a signal from the control unit, a power switching unit for supplying and shutting off power to the amplifying unit, and a power switching unit for instructing the power switching unit to supply and shut off power. The signal switching device according to claim 1, further comprising: a control unit having an instruction unit.