JPS5920208B2 - Mobile tower telephone - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mobile phone that reduces power consumption during standby.

In conventional hands-free telephones for use in mobile towers, when the power switch is turned on, power is applied to all telephone circuits.

Since this type of hands-free telephone uses a microphone and a speaker, it has the disadvantage that the power amplifier for driving the speaker is turned on, consuming a large amount of unnecessary power. The present invention relates to a mobile phone that eliminates these drawbacks.

This will be explained below along with examples. In Figure 1,
1 is an antenna, 2 is an antenna duplexer, 3 is a receiving section, 4 is a transmitting section, 5 is an oscillating section, 6 is a control device for the entire apparatus, and 7 is a hands-free telephone.

The operator of the mobile unit must use the radio equipment consisting of 1 to 6 above and the T.
Make a call to the other party using your hands-free phone.

FIG. 2 shows a detailed configuration of the hands-free telephone set 7 in FIG. is a switching circuit between a stationary microphone 8 and a close-talking microphone 9,
12 is a microphone amplifier; 13 is a level determination circuit for determining whether the microphone level is above a specified level; 14 is a power supply control circuit for turning on the main power only when necessary; 16 is the main control circuit of the hands-free telephone, 17 is the contact of relay 15, 18 is a key matrix switch with a push button dial for dialing and ending calls, 19 is the operation a key decoding circuit; 20 a temporary storage circuit for decrypted information; 21 a ringing and busy tone detection circuit;
22 is a speaker driving amplifier, and 23 is a speaker.

Note that the line a is a power supply line that is controlled to be turned on and off, and the other lines are all signal lines. In the standby state, Figure 1 1~
The radio device indicated by 6 is powered on, but the transmitter 4 is inactive.

...Ndfri telephone 7 is 11, 12, 13 in Fig. 2,
14, 19, 20, 21 only the power supply for the circuits with low power consumption is 0N, and the circuits 15, 1 that consume a large amount of power
The power supply of the circuits shown in 6 and 22 is set to OFF. 8,
Portions indicated by 9, 10, 15, 18, and 23 are parts such as microphones, switches, relays, and speakers, and current flows only when the drive circuit operates.

First, an example of the use of a close-talking microphone will be explained.

An electrostatic switch 10 is attached to the housing of the close-talking microphone 9 by holding the close-talking microphone 9 close to the mouth.
Or the switch becomes 0N. Power supply control circuit 14
detects 0N of the electrostatic switch 10, switches the switching circuit 11 to the close-talk type microphone 9 side, operates the relay 15 at the same time, and connects the main control circuit 16 and amplifier 22 via the relay contact 17 of the hands-free telephone. Power is supplied and all functions are operational. After the line is connected by dialing the key matrix 18, a conversation is made with the other party using the close-talk type microphone 9 and the speaker 23. Next, the operation when a call arrives during standby will be described.

When an incoming call is received, the control device 6 sends a ringing tone to the hands-free telephone 7. This ringing tone passes through the hands-free telephone main control unit 16, is detected by the ringing tone and busy tone detection circuit 21, and is detected by the power supply control circuit 14.
5 is operated to supply power to the circuits 16 and 22. Next, a case will be described in which one of the push switches used to operate the telephone is operated.

Press the push switch and key matrix switch 18
When is pressed, the power supply control circuit 14 operates the relay 15 via the decoding circuit 19 to turn on the power, and at the same time the decoding circuit 19 decodes the key information and stores it in the storage device 20. This information is transferred to the main control circuit 16 of the hands-free telephone 7 by means of a contact 17.
Since the data is read out after the power is turned on, the first key input of the key matrix switch 18 is not ignored and is accepted, and the process moves to the calling operation. Next, the case of using a stationary microphone will be explained.

In the standby state, the switching circuit 11 is connected to the stationary type side,
The voice is amplified by the microphone amplifier 12 and transmitted to the level determination circuit 13. In this level determination circuit 13, when the audio level remains at a constant level for a certain period of time, a power supply control circuit 14 operates a relay 15. After the call ends, relay 15
will be restored under the following conditions.

One is a circuit 19 that decodes the key operation by the mobile operator's key matrix switch 18 to end the call.
The power supply control circuit 14 resets the relay 15.

The other conditions are that the control device 6 decodes the end-of-call signal sent by the other party's call down, and...
The busy tone is transmitted to the main control circuit 16 of the main control circuit 16 of the main control circuit 16 of The busy tone is detected by the ring tone/busy tone detection circuit 21 and transmitted to the power supply control circuit 14, which resets the relay 15. The parts that are always powered on are circuits 11 and 1 in Figure 2.
Although the numbers 2, 13, 14, 19, 20, and 21 seem to be large at first glance, their respective currents are small, and the portions indicated by circuits 15, 16, and 22 consume a large amount of power, so it is possible to reduce power consumption using this method.

Furthermore, if drive circuits for various displays are also included, the effect will be even greater. In this explanation, we have described an example in which a ring tone, a busy tone, etc. is sent from the control device 6 to the phone 7, and this tone is detected. Exactly the same effect can be obtained by operating the control circuit 14. It goes without saying that the electrostatic switch 10 attached to the close-talking type microphone storage section can also be used in other locations and with a different configuration to achieve the same effect. As explained above with reference to the embodiments, according to the present invention, the main power of the hands-free telephone is turned on only when necessary for a telephone call, which has the effect of reducing the power consumption of the mobile tower-mounted telephone.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a mobile base station equipment, and FIG. 2 is a block diagram of a mobile base telephone according to an embodiment of the present invention. 7... Hands-free telephone, 9... Close-talk type microphone, 10... Electrostatic switch, 11...
...Switching circuit, 13...Level judgment circuit,
14...Power control circuit, 16...Main control circuit, 18...Key matrix switch, 2
1...Ring tone, busy tone detection circuit.

Claims (1)

[Claims] 1 A first means for detecting that the microphone has been brought close to the mouth from the storage part, a second means for detecting that a call has been received by an incoming call, and a key matrix switch used for dialing the telephone. a third means that operates when one is operated; a fourth means that operates when the stationary microphone is spoken to give a command for a certain period of time;
A mobile tower-mounted telephone, characterized in that it is provided with means for turning on the main power of the telephone when at least one of the third and fourth means outputs an output.