JPH06232797A - Portable telephone set - Google Patents

Abstract

PURPOSE:To lengthen using time of the portable telephone set by reducing the power consumption of the portable telephone set. CONSTITUTION:A clock control section 3 lets a prescribed frequency be an operating clock fed to a voice control section 6 and a base band control section 5 in a talking state in response to the result of discrimination by a main control section 1 discriminating a talking standby state and a talking state and stops the operating clock fed to the voice control section 6 in the talking standby state and decreases the frequency of the operating clock fed to the base band control section 5 more than the frequency in the talking state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power saving type portable telephone which can be used for a long time.

[0002]

2. Description of the Related Art Recently, mobile phones using radio waves have been widely used. This type of mobile phone is desired to be small and lightweight, but if it is made smaller and lighter, the battery serving as a drive source must also be made smaller, which causes a problem that the usage time is shortened. It was

In order to address such a problem, the present inventor succeeded in developing a mobile phone having a long usage time by varying the power consumption of the battery according to the usage status of the mobile phone. did.

[0004]

SUMMARY OF THE INVENTION Therefore, an object of the present invention, which has been proposed in view of the above circumstances, is a power-saving type which can reduce power consumption and can be used for a long time as compared with a conventional mobile phone. Is to provide a mobile phone.

[0005]

SUMMARY OF THE INVENTION A mobile phone of the present invention proposed to achieve the above object has a main control section for discriminating between a call waiting state and a call state, and a main control section according to a discrimination result of the main control section. During a call, the operation clock supplied to the voice control unit and the baseband control unit is set to a predetermined frequency, and during the call standby, the operation clock supplied to the voice control unit is stopped and the operation clock supplied to the baseband control unit is stopped. And a clock control unit that lowers the frequency of the above compared to that during a call.

In such a mobile phone of the present invention, a DS whose power consumption is changed by changing the frequency of the operation clock to high or low in the voice control unit and the baseband control unit.
Since it can be configured by using a high-speed arithmetic processing type microcomputer such as P, the main control unit determines whether the call is in standby or not, and when it is determined that the call is in standby, the clock control unit controls the voice control unit and the baseband control. Power consumption is reduced by lowering the frequency of the operation clock supplied to the unit from the state during a call.

Further, in such a mobile phone, the main control section can receive the interrupt signal from the key operation section only when performing the command processing, and intermittently drive the clock oscillator included in the main control section.

[0008]

In the portable telephone according to the present invention, the main control unit determines the period during which the voice control unit and the baseband control unit are hardly operating, and stops the operation clocks supplied to these control units, or It employs a method of lowering the frequency, which reduces the overall power consumption.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an example of the hardware configuration of the mobile phone A of the present invention. In this mobile phone A, a main control unit 1 is composed of an MPU (microcomputer), and a key operation unit 2 equipped with a numeric keypad and function keys is connected.

The frequency of the clock signal output from the clock generator CG of the clock controller 3 is controlled by the frequency divider 4. Here, the clock control unit is configured by an ASIC (custom IC), and each of the baseband control unit 5 and the voice control unit 6 is configured by including a DSP (high-speed arithmetic processing type microcomputer). MP
Since the U and DSP are composed of CMOS or the like, the power consumption also changes according to the frequency change of the operation clock.

The baseband control section 5 has an antenna 9 and a high frequency amplification control circuit section 8 including a transmission control section, a reception control section and a demultiplexer is connected via an analog / digital signal conversion circuit 10. The voice control unit 6 is connected to the microphone MIC via the analog / digital signal conversion circuit 11.
And speaker SP are connected. Clock control unit 3
On the basis of the operation clock switching signal from the main control unit 1, the frequency of the operation clock supplied to the baseband control unit 5 and the audio control unit 6 can be controlled to be switched from the high speed mode to the low speed mode.

The baseband control unit 5 decodes the control commands necessary for making, receiving, and talking on the mobile phone A. At the time of a call, the voice signal compressed by the voice control unit 6 is subjected to a high frequency amplification control circuit. The voice signal and the command signal are separated from the signal sent to the unit 8 or demodulated by the high frequency amplification control circuit unit 8 and output to the main control unit 1 and the voice control unit 6. Only the processing such as extracting the command signal from the demodulated radio wave signal is required, and the amount of data processing is remarkably smaller than that at the time of a call. Therefore, the clock controller 3
Further, when the frequency of the operation clock supplied to the baseband control unit 5 needs to be, for example, about 28 MHz during a call, it can be lowered to a low frequency range of 2.8 MHz during a call standby.

When the main control unit 1 determines that the call is on standby, it sends an operation clock switching signal to the clock control unit 3 and waits for the frequency of the operation clock supplied to the baseband control unit 5. The hour mode, that is, the switching from the "high speed mode" to the "low speed mode" is controlled. On the other hand, the voice control unit 6 allows the user of the mobile phone A to receive the microphone M.
Input via IC, analog / digital converter 11
The voice control unit 6 performs signal processing necessary for compressing a voice signal transmitted via the base station and expanding the voice signal received from the baseband control unit 5. Does nothing. Therefore, there is no problem even if the operation clock is stopped during the call waiting. Therefore, when the main controller 1 determines that the call is waiting, the supply of the operation clock by the clock controller 3 is stopped. I am letting you.

The power saving of the power consumption is as follows.
The same can be done for the main controller 1. In other words, during call waiting, each process required other than the process of the command signal input from the key operation unit 2 is limited to a very limited process, so that the own clock generator CGO can be used only during the process of the command signal. It is also possible to drive intermittently to suppress power consumption.

On the other hand, when an incoming call is made by a call from the base station or a call is made by operating the key operation unit 2, the main control unit 1 covers the power consumption required for a call. The clock control unit 3 is controlled to switch the operation clock from the call mode, that is, the “low speed mode” to the “high speed mode”. That is, in the above example, the high-frequency operation clock of 28 MHz is supplied to the baseband controller 5 and the audio controller 6.

Table 1 shows an example of the relationship between the control status of the operating clock and the power consumption accompanying it in the call standby and the call in the baseband controller 5, the voice controller 6, and the main controller 1. Show as.

[0017]

[Table 1] Assuming that the current capacity of the battery (not shown) equipped in the mobile phone A of the present invention is 1100 mAh, when the processing for stopping the operation clock during a call standby or lowering its frequency to a low frequency is performed, Actually, it was possible to use it for as long as 13 hours, but if such treatment was not performed, it could only be used for about 4 hours. By comparing the two, it is clear that the effect of the present invention is great.

An example of the power saving operation of the mobile phone of the present invention will be described below with a flowchart. Steps 100 to 106 in FIG. 2 are time charts showing the operation procedure at the time of incoming call. After the control channel is received and the ringing signal is confirmed, the frequency of the operation clock is switched from the high speed mode to the low speed mode. Here, SID is a system ID code for identifying a service company, MIN1.
Is a code that converts the last 7 digits of the telephone number to 24 bits, M
IN2 is a code obtained by converting the first three digits of the telephone number into 10 bits and corresponds to the area code. Further, s and r indicate received information, and p indicates information registered in the mobile phone.

Steps 200 to 203 in FIG. 3 are time charts showing the operation procedure at the time of making a call. After the dial of the call destination is input, the call is confirmed by operating the SEND key of the key operation unit 2. , The frequency of the operation clock is switched from the low speed mode to the high speed mode. Note that steps 300 to 307 of FIG. 4 are time charts showing an operation procedure until the call returns to the standby mode after the call ends, and the call channel is released after the predetermined handshake with the base station. Then, the frequency of the operation clock is switched from the high speed mode to the low speed mode.

[0020]

As can be understood from the above description, according to the mobile phone of the present invention, when the telephone is on standby,
Since the operation clock is stopped or switched from high frequency to low frequency for the voice control unit and the baseband control unit, the power consumption is suppressed, and the long-time operation under one battery replacement (or charging) is suppressed. It can be used for hours.

[Brief description of drawings]

FIG. 1 is a block diagram showing an example of a hardware configuration of a mobile phone according to the present invention.

FIG. 2 is a flowchart showing an example of a power saving operation of the mobile phone according to the present invention, particularly an operation until a call is made after an incoming call.

FIG. 3 is a flowchart showing an example of a power saving operation of the mobile phone according to the present invention, in particular, an operation until a call is made after a call is made.

FIG. 4 is a flowchart showing an example of a power saving operation of the mobile phone according to the present invention, particularly an operation until a standby state is entered after the call ends.

[Explanation of symbols]

 A ... Mobile phone 1 ... Main control unit 3 ... Clock control unit 5 ... Baseband control unit 6 ... Voice control unit

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[Procedure amendment]

[Submission date] March 23, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0015

[Correction method] Change

[Correction content]

On the other hand, when an incoming call is made by a call from the base station or a call is made by operating the key operation unit 2, the main control unit 1 covers the processing capacity required during a call. The clock control unit 3 is controlled to switch the operation clock from the call mode, that is, the “low speed mode” to the “high speed mode”. That is, in the above example, the high-frequency operation clock of 28 MHz is supplied to the baseband controller 5 and the audio controller 6.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0016

[Correction method] Change

[Correction content]

Table 1 shows an example of the relationship between the control status of the operating clock and the current consumption accompanying it in the call standby and the call in the baseband controller 5, the voice controller 6, and the main controller 1. Show as.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0017

[Correction method] Change

[Correction content]

[0017]

[Table 1]

[Procedure amendment 4]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 2

[Correction method] Change

[Correction content]

[Fig. 2]

[Procedure Amendment 5]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 4

[Correction method] Change

[Correction content]

[Figure 4]

Claims (1)

[Claims] 1. A main control unit for discriminating between a call waiting state and a call state, and an operation clock supplied to a voice control unit and a baseband control unit at a predetermined frequency during a call according to the discrimination result of the main control unit. That is, the mobile phone including a clock control unit that stops the operation clock supplied to the voice control unit during call standby and lowers the frequency of the operation clock supplied to the baseband control unit compared to during call.