JP2001016156A - Power consumption control method for portable telephone set - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power consumption control method for portable telephone set with which power consumption can be reduced when an effective channel can not be retrieved. SOLUTION: When the effective channel can not be retrieved in perch channel retrieval, until it exceeds the set period of a timer B (step S1) predetermined for turning off a power source, a low power consumption mode state (steps S6-S8) is repeated (step S8) for the preset period of a timer A (step S5) and when it exceeds the set period of the timer B as a result of repetition, the power source of the portable telephone set is turned off by the selection by a user (steps S10, S12 and S13).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling power consumption in a portable telephone, and more particularly to a method for controlling power consumption when searching for a perch channel.

[0002]

2. Description of the Related Art In order to control power consumption in a portable telephone, when power is turned on, as shown in FIG. 3, a search is made for a perch channel (step S51), and an effective channel having a predetermined electric field strength or higher exists. It is checked whether it is (Step S52). If it is determined in step S52 that there is an effective channel, the process shifts to a standby operation for shifting to the effective channel (step S53). If it is determined in step S52 that there is no valid channel, the timer A is started (step S54), the low power consumption mode is entered (step S55), and the elapse of the set time of the timer A is waited (step S56). ). When the set time of the timer A elapses, the low power consumption mode is released (step S57),
The process is executed again from step S51.

[0003] As described above, the conventional power consumption control method for a portable telephone uses a search for a perch channel.
When an effective channel cannot be searched, the power consumption mode is reduced by entering the low power consumption mode for the time set by the timer A. When an effective channel is not searched, the set time of the timer A is sequentially set longer.

[0004]

However, according to the above-described conventional power consumption control method in a portable telephone, when an effective channel cannot be searched for in a perch channel search, for example, when the mobile phone is out of the area of a base station for a long time, Although a low power consumption mode is entered for a fixed time or a variable time, there is a problem that a considerable amount of power is consumed in order to repeatedly search for a perch channel. By the way, in the case of the digital mobile phone, the setting value of the timer is variable and is about 4 to 10 seconds. However, compared to the normal standby operation in the service area, the time required for scanning for detecting a perch outside the service area is longer. Power consumption increases, battery consumption increases,
The standby time has been reduced by about half.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a power consumption control method for a portable telephone which can reduce power consumption when an effective channel cannot be searched.

[0006]

A power consumption control method in a portable telephone according to the present invention is a power consumption control method in a portable telephone when an effective channel cannot be detected in a perch channel search, and an effective channel cannot be detected. At this time, the low power consumption mode state is repeated for a preset second period until the first period for turning off the power is exceeded, and when the first period is exceeded by the repetition, the user's selection is made. Thereby turning off the power of the mobile phone.

According to the power consumption control method for a portable telephone according to the present invention, when an effective channel cannot be detected in the search for a perch channel, the preset channel is set until a predetermined power-off first period is exceeded. The low power consumption mode state is repeated over the second period, and when the first period is exceeded by this repetition, the power of the mobile phone is controlled to the off state by the selection of the user.

Therefore, according to the method for controlling power consumption in a portable telephone according to the present invention, the first method is performed by the user.
When the power supply is turned off after the period, power consumption is reduced.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method for controlling power consumption in a portable telephone according to the present invention will be described below with reference to an embodiment.

FIG. 1 is a flowchart showing a power consumption control method in a portable telephone according to an embodiment of the present invention.

A power consumption control method for a mobile phone according to one embodiment of the present invention is such that when the power of the mobile phone is turned on, the power of the mobile phone is selectively turned off after a set time has elapsed. Is activated (step S1), and a search for a perch channel is performed (step S2). In the search in step S2, it is checked whether there is an effective channel having a predetermined electric field strength or more (step S3). When it is determined in step S3 that there is an effective channel, the process shifts to a standby operation for shifting to the effective channel (step S4).

If it is not determined in step S3 that there is no valid channel, a second period for determining the period during which the apparatus is in the low power consumption mode following step S3.
Is started (step S).
5) Enter the low power consumption mode (step S6), and wait until the set time of the timer A has elapsed (step S6).
7). When the set time of the timer A has elapsed in step S7, the low power consumption mode is canceled (step S8). Subsequent to step S8, it is checked whether the set time of the timer B has elapsed (step S9).
Therefore, the low power consumption mode is executed over the set time of the timer A.

If it is determined in step S9 that the set time of timer B has not elapsed, step S9 is repeated.
2 and a search for a perch channel is performed. Therefore, when there is no valid channel in the search for the perch channel, the low power consumption mode of the period set by the timer A is repeated until the set time of the timer B elapses in step S9, and the perch channel is searched for. A search will be performed.

If it is determined in step S9 that the set time of the timer B has elapsed, an instruction to turn on or off the power supply of the portable telephone is checked following step S9 (step S10). . Step S1
If it is determined at 0 that the user has not instructed to turn off the power by the user of the mobile phone, the process is repeated from step S2. The case where step S10 is executed is remarkable during the out-of-service operation.

If it is determined in step S10 that the user of the mobile phone has instructed to turn off the power, a warning message is displayed on the display of the mobile phone or a warning sound is issued. Alternatively, the portable telephone is alerted by sounding a warning vibration (step S).
11) Then, the process stands by to accept a cancellation for a predetermined period of time (step S12). Step S12
When a cancel instruction is issued during the standby period of the above, the process is executed again from step S1 without turning off the power of the mobile phone.

If no cancel instruction is given during the standby period of step S12, the power of the mobile phone is turned off and the process ends (step S13). Therefore, in this case, if the state in which the effective channel is not detected continues for many hours, the power of the mobile phone is cut off, and the battery consumption can be significantly reduced.

The set time of the timer B, that is, the time for shifting to the power-off state, can be set by a user in advance by using a menu displayed on the display, and the set value is displayed in step S8. You may make it possible to confirm.

Hereinafter, a method of controlling power consumption in a portable telephone according to the present invention will be described with reference to another embodiment.

FIG. 2 is a flowchart showing a power consumption control method in a portable telephone according to another embodiment of the present invention.

In the power consumption control method for a portable telephone according to another embodiment of the present invention, when the portable telephone is turned on, the count value of the counter A indicating the number of times of the low power consumption mode period is increased. Cleared (step S2
1) A search for a perch channel is performed (step S22). In the search in step S22, it is checked whether there is an effective channel having a predetermined electric field strength or more (step S23). When it is determined in step S23 that there is an effective channel, the process shifts to a standby operation for shifting to the effective channel (step S2).
4).

If it is not determined in step S23 that there is no valid channel, a timer A, which is a timer for determining a period of the low power consumption mode, is started following step S23 (step S2).
5) Enter the low power consumption mode (step S26), and wait for the set time of the timer A to elapse (step S2).
7). When the set time of the timer A has elapsed in step S27, the low power consumption mode is canceled (step S28). Subsequent to step S28, the count value of the counter A is incremented by (+1) (step S29). Therefore, the low power consumption mode is executed over the set time of the timer A.

Subsequent to step S29, it is checked whether (count value of counter A x set time of timer A) ≥ (set period for powering off the mobile phone) (step S30). If it is determined in step S30 that (count value of counter A x set time of timer A) ≥ set period for powering off the mobile phone, the process is repeated from step S22 to search for a perch channel again. Is executed.

Therefore, if there is no valid channel in the search for the perch channel, the process proceeds to step S
In (30), when (count value of counter A × set time of timer A) is less than (set period for powering off the mobile phone), (count value of counter A × set time of timer A) ≧ (time of mobile phone) The low power consumption mode is repeated until the power-off period is reached.

If it is determined in step S30 that (count value of counter A x set time of timer A) ≥ (set period for turning off the power of the mobile phone), the process proceeds to step S30. An instruction as to whether or not to turn off the power is checked (step S3).
1). If it is determined in step S31 that the user of the mobile phone has not instructed to switch to the power-off mode, the process is executed again from step S22. The case where step S31 is executed is remarkable at the time of out-of-service operation.

If it is determined in step S31 that the user of the mobile phone has instructed to turn off the power, a warning message is displayed on the display, a warning sound is issued, or a warning vibration is issued. Is sounded (step S32), and then a standby is made to accept cancellation for a predetermined period of time (step S3).
3). If a cancel instruction is issued during the standby period of step S33, the process is executed again from step S21 without turning off the power of the mobile phone.

If no cancel instruction is given during the standby period of step S33, the power of the mobile phone is turned off and the process ends (step S34). Therefore, in this case, if the state in which the effective channel is not detected continues for many hours, the power of the mobile phone is cut off, and the battery consumption can be significantly reduced.

The power-off set time for shifting to the power-off state may be set in advance by a user through a menu, and the set time may be displayed and confirmed in step S31.

[0028]

As described above, according to the power consumption control method for a portable telephone of the present invention, when a valid channel cannot be detected in the search for a perch channel, the power can be turned off by the user's selection. The effect that power consumption can be remarkably reduced can be obtained.

[Brief description of the drawings]

FIG. 1 is a flowchart for explaining a power consumption control method in a mobile phone according to an embodiment of the present invention.

FIG. 2 is a flowchart for explaining a power consumption control method in a mobile phone according to another embodiment of the present invention.

FIG. 3 is a flowchart for explaining a power consumption control method in a conventional mobile phone.

Claims (3)

[Claims] 1. A power consumption control method for a mobile phone in a case where an effective channel cannot be detected in a search for a perch channel, wherein when a valid channel cannot be detected, a predetermined period for powering off is exceeded. And repeating the low power consumption mode state over a preset second period, and when the repetition exceeds the first period, turning off the power of the mobile phone by a user's selection. Power consumption control method in a mobile phone. 2. The power consumption control method for a mobile phone according to claim 1, wherein the first period can be set in advance by a user. 3. The method for controlling power consumption of a portable telephone according to claim 1, wherein the low power consumption mode state is repeated, and when the first period is exceeded by the repetition, the user is notified of the fact. Power consumption control method in a mobile phone.