JPH1041871A - Power source control system for portable communication terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent power supply from being cut off by a erroneous misoperation of a power supply key at the time of incoming call or speaking by detecting the kind of an input key, the time of continuous depression and conditions at a terminal and discriminating whether or not the key operation is valid according to an operation discrimination reference. SOLUTION: Concerning the input from a key input device 23, the kind of key is detected by a key depression detecting means 24 and sent to a key input discriminating means 26 and at the same time, the detection information of key depression start is reported to a key depression time calculating means 25. When this information is received, at the key depression time calculating means 25, the continuous depression time of the key is calculated by a timer and sent to the key input discriminating device 26. In key input discrimination information 28, on the other hand, operation reference time is set corresponding to the conditions at the terminal with as the operation discrimination reference. According to the discrimination reference, the key input discriminating means 26 discriminates whether or not the key operation is valid from the communication conditions from information 27, showing the kind of the key, the time of continuous depression and the conditions at the terminal. Thus, power supply is prevented from being cut off by misoperation of the power supply key at the time of incoming call or of speaking.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a portable communication device, and more particularly to a power supply control method suitable for a portable communication device and a communication device using the same.

[0002]

2. Description of the Related Art An example of a digital portable telephone which is one of portable communication terminals is shown in a block diagram of FIG.

[0003] 1 is a microphone, 2 is an amplifier, 3 is an A / D converter, 4 is an audio encoder, 5 is a transmission signal processing circuit, 6 is a modulator, 7 is a transmission mixer, 8 is a transmission power amplifier, and 9 is a transmission power amplifier. A transmission / reception splitter, 10 is an antenna, 11 is a reception mixer, 12 is an amplifier, 13 is a demodulator, 14 is a reception signal processing circuit, 15 is a voice decoder, 16 is a D / A converter, 17 is an amplifier, and 18 is an amplifier. Speaker, 19 is frequency synthesizer, 20 is control MP
U and 21 are power supply control circuits, 22 is a display device, and 23 is a key input device.

The transmission voice is converted into an electric signal by the microphone 1, appropriately amplified by the amplifier 2, converted into a digital signal by the A / D converter 3, and then compressed and encoded by the voice encoder 4. Next, the signal is sent to the transmission signal processing circuit 5, where it is added with an error correction code and the like, converted into a digital signal transmission format, and sent to the modulator 6. In the modulator 6, for example, π / 4 shift QPSK modulation is performed, and the antenna 1 is transmitted through the transmission mixer 7, the transmission power amplifier 8, and the transmission / reception splitter 9.
0 is transmitted to space as a transmission wave. On the other hand, a received wave is received by an antenna 10, passed through a transmission / reception splitter 9, converted into an IF signal by a reception mixer 11, amplified by an amplifier 12, and then input to a demodulator 13. In the demodulator 13, the IF
The signal is detected and converted into a baseband signal and then demodulated into a digital signal. The received signal processing circuit 14 extracts data from the received data format and performs error correction processing. Thereafter, the audio signal is decoded by the audio decoder 15 and D
After being converted into an analog signal by the / A converter 16, it is appropriately amplified by the amplifier 17 and reproduced by the speaker 18 into an audio signal. The frequency synthesizer 19 assigns a local oscillation frequency to the transmission mixer 7 and the reception mixer 11, and transmits the
The reception frequency can be set at regular intervals. The control MPU 20 controls the entire apparatus, and sets the frequency of the synthesizer 19, controls the transmission signal processing circuit 5, the reception signal processing circuit 14, the display device 21 and the key input device 12
It controls input / output and communication protocol. Also,
The reception signal processing circuit 14 and the transmission signal processing circuit 5 are collectively called a channel codec.

The power supply control circuit 21 controls the power supply of the portable telephone. The key input device 23 performs an input operation of numbers and characters such as dial numbers, an incoming call response / originating operation, and a power on / off operation, and the display device 22 displays a result of the key input operation and a communication state. I do.

FIG. 3 shows an example of an external view of a portable communication terminal having this configuration. In FIG. 3, reference numeral 23 designates a power key 24 for turning on / off the power by the input device. 1 is a microphone, 10 is an antenna, 18 is a speaker, 2
Reference numeral 2 denotes a display device. In general, portable communication terminals are being miniaturized for the purpose of improving portability, and each key in a key input device tends to be miniaturized and dense. In order to prevent an erroneous operation during carrying in such a miniaturized terminal, a technique of arranging infrequently used keys on the movable part side in a portable terminal composed of a terminal body and a movable part is disclosed in Japanese Unexamined Patent Application Publication No. Hei 5 (1994) -205.
No. 316,183. Japanese Patent Application Laid-Open No. 2-71617 discloses a technique for judging whether key input is valid or invalid based on the time of pressing a special key.
In order to further improve the operability of the user, a function has been put to practical use in which an incoming call can be answered by a key operation other than the incoming call response key at the time of receiving a call.

[0007]

However, the possibility of erroneous operation at the time of key operation increases with downsizing / densification of keys, and the power key and other input keys as shown in FIG. In such a mobile communication terminal, there is a risk that the power is turned off due to an erroneous operation during an incoming response operation or during a call. In addition, in the conventional technology for determining validity / invalidity based on the pressing time of the power key, the determination reference time is a fixed value, so even if the user attempts to turn off the power by his / her own will, pressing the key for more than the reference time. There was a problem of forcing operation. In particular, the possibility of an erroneous operation is increasing in a terminal having a function of being able to answer an incoming call by a key operation other than the incoming call answering key at the time of an incoming call.

It is an object of the present invention to provide a power control method for preventing a power supply from being turned off due to a user's erroneous operation when answering a call or during a call.

[0009]

In order to achieve the above object, in a control MPU of a portable communication terminal, a key press detecting means for detecting a press state of a key input device, and a time during which the key is kept pressed. Key pressing time calculating means for calculating
Communication status information indicating a communication status, key input determination information that is key operation determination information corresponding to the communication status, data from the key press detection unit and key press time calculation unit, communication status information, and key input determination information Key input determining means for further determining operation information, and power control is performed based on the result of the key input determining means.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described in detail using an example of a digital portable telephone.

First, FIG. 1 shows a block diagram of a power control method in a portable communication terminal according to the present invention. 23 is a key input device, 21 is a power control circuit. 20 is the control MPU
In this, processing of the key press detecting means 24, the key press time calculating means 25, and the key input determining means 26 is performed. The control MPU 20 has communication status information 27 and key input determination information 28. The power control circuit 21 receives a control signal from the control circuit 20 and performs power control such as power on / off of the mobile communication terminal.

A key operation performed by the key input device 23 is detected by key input detection means 24. The key input detecting means 24 determines the type of the detected key by a key input determining device 26.
To notify the key pressing time calculating means 25 of the detection information of the key pressing start. The key press time calculating means 25 starts the timer upon receiving the key press start detection information, calculates the time during which the key is continuously pressed, and receives the key press end detection information from the key input detection means 24, and then continuously outputs the time. Reset the calculation result of the pressing time. The calculation result of the key pressing time calculating means 25 is intermittently reported to the key input determining means 26.

Here, as an example, the communication status of the mobile communication terminal is classified into four statuses, ie, “outgoing”, “incoming”, “call” status, and the other status “standby”. The change of the communication status information will be described using a sequence example at the time of an incoming call.

FIG. 4 is a diagram showing the correspondence between the sequence from when the mobile radio terminal receives data transmitted from the partner terminal through the radio line for mobile radio communication until the call is started and the communication status information. . When the mobile communication terminal is on standby, the communication status information is also “standby”. When there is an incoming call request from the other terminal on the transmitting side, the incoming call request signal is received by the mobile communication terminal via the mobile radio base station / exchange station and the mobile radio radio line. When the terminal recognizes the incoming call, the terminal enters an incoming call state, and the communication status information also changes to “incoming”. Thereafter, the terminal performs an incoming call notification. When the terminal recognizes the incoming call response operation, it sends out an incoming call operation signal, which is
The signal is transmitted to the partner terminal via the exchange, whereby the line is connected and communication is started, and the communication status information changes to "call".

Thereafter, when the communication is completed and the apparatus enters a standby state, the communication status information also returns to "standby".

Further, Table 1 shows an example of the judgment reference time of the key input judgment information 28.

[0017]

[Table 1]

In this embodiment, the power key operation determination criterion is set to one second when the communication status information is "standby" and "transmission".
-In the case of "incoming call" and "call," the time was set to 2 seconds, and the input keys other than the power key were set to 0.1 second regardless of the communication status information.

The key input judging means 26 detects the result of key type detection by the key press detecting means 24, the result of continuous key press time calculation by the key press time calculating means 25,
The validity / invalidity of the key operation is determined according to the determination reference time of the key input determination information 28 which is uniquely determined from the communication status information 27 indicating the communication status of “incoming”, “call”, and “standby”. After that, the function operation of the portable communication terminal and the power control are performed based on the determination result of the key input determination unit 26.

According to the first embodiment, as described above, the power key operation determination condition (determination reference time) is set according to the communication status, and the power key and other keys are input according to the determination condition. If power control is performed by judging validity / invalidity, power cutoff due to erroneous operation of the power key can be prevented in a situation such as during a call in which the power cutoff operation is not generally performed.

Next, a second embodiment of the present invention will be described with reference to Table 2.

[0022]

[Table 2]

In Table 2, the terminal status information is a function selection status indicating the status of the function selection of the portable communication terminal. "Auto redial" for automatically redialing at a predetermined time interval. Is a function selection status indicating a status of function selection such as "phone number search" for searching for a telephone number and "ring volume setting" for setting a ring volume of a terminal. In Table 2, the function selection status is distinguished into two statuses, "ON" / "OFF", which are the setting status of the "auto redial" function. When the "auto redial" function is "ON", it is the key input determination information of the power key. Judgment reference time to 2 seconds,
At the time of “OFF”, setting to 1 second can prevent erroneous operation of the power key during the “auto redial” function setting.

Next, a third embodiment of the present invention will be described with reference to FIG. In FIG. 5, terminal status information 27 is antenna status information indicating the detection result of the status detection means 31 of the movable antenna. Here, an example of the antenna condition detecting means 31 of the movable antenna is shown in FIG. The antenna 10 shown in FIG. 7 is a pull-out antenna, and the switch at the lower end of the antenna housing part is the antenna status detecting means 31. This switch is “ON” when the antenna is pulled out from the main unit during a call or the like.
When the antenna is housed in the housing and is in contact with the switch, such as when carrying, the antenna is turned off. As shown in Table 3, the key input determination information 28 in the third embodiment is as follows.
When the result of the antenna situation detecting means is "ON", that is, when the antenna is in the "pull-out" state, the judgment reference time is 2 seconds, and when "OFF", that is, when the antenna is in the "stowed" state, 1 second. By setting it, incorrect operation of the power key is prevented.

[0025]

[Table 3]

As described above, by detecting the "pull-out" or "storage" state of the antenna that is pulled out when the terminal is used during a normal call or the like and performing power control as terminal state information, erroneous operation of the power key can be prevented. .

FIG. 6 is a block diagram of a power control method for a portable communication terminal according to a fourth embodiment of the present invention. As shown in FIG. 8, the terminal body 34 and the terminal movable unit 3 which is a flipper, for example,
5, a mobile communication terminal comprising:
The terminal opening / closing detecting means 33 for detecting the opening / closing state of the terminal 5 is a switch provided in a connection portion between the terminal body 34 and the movable portion 35 in this embodiment. Using the terminal opening / closing status information, which is the detection result of the terminal opening / closing status detecting means 34, as the terminal status information 27, the status where the movable part of the terminal is opened is “open”, and the status where the movable part of the terminal is closed is “closed”. , Key input determination information 28
Is set as shown in Table 4, it is possible to prevent an erroneous operation in the open state of the terminal movable unit.

[0028]

[Table 4]

Next, a fifth embodiment of the present invention will be described. In the present embodiment, as in the third embodiment, the terminal is provided with an antenna status detecting means 31 for detecting the "pull-out" or "storing" status of the antenna as shown in FIG. In addition, the terminal
As shown in FIG. 7, a terminal main body 34 and a terminal movable section 35, for example, a flipper, are provided, and a terminal open / close detecting means 33 for detecting the open / close state of the terminal movable section 35 is provided.
In the present embodiment, the terminal status information 27 in FIG. 1 is a detection result from the antenna status detecting means 31 and the terminal opening / closing detecting means 33, and the terminal status takes four states depending on a combination of the two information. Table 5 shows an example of a conversion table of the terminal status information 27 and the determination reference time information which is the key input determination information 28 in this case.

[0030]

[Table 5]

[0031]

[Table 6]

By providing the key input determination information 28 corresponding to the plurality of terminal status information 27 in this way, it is possible to set the determination information for preventing the erroneous operation of the key input for a more specific situation.

Finally, a sixth embodiment of the present invention will be described. In the key input determination information 28, in addition to the reference time information of the key operation determination information 28 corresponding to the communication status, key type conversion information for converting the type of the input key corresponding to the communication status as shown in Table 2 Provide. In the present embodiment, the power key / end key is always determined as the power key / end key regardless of the communication status. Other keys (0-9, *, #,
Incoming keys, etc.) are determined as the original keys when the communication status is “outgoing”, “call”, and “standby”, but are converted to incoming keys when “incoming”.

First, a key input determined to be valid from the communication status information and the determination reference time information by the key input determination means 26 is then converted into key type conversion information corresponding to the communication status information by key type conversion information. Conversion is performed. In this embodiment, the power control based on the continuous pressing time of the power key is the first power control.
Although the embodiment is the same as that of the first embodiment, an incoming call can be answered by a key operation other than the incoming call response key.

[0035]

According to the present invention, it is possible to prevent the power from being turned off due to an erroneous operation of the power key at the time of an incoming call or a telephone call.

[Brief description of the drawings]

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

FIG. 2 is a block diagram illustrating a configuration of a mobile phone.

FIG. 3 is a front view of a mobile phone.

FIG. 4 is an explanatory diagram showing a change example of communication status information.

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

FIG. 6 is a block diagram showing a fourth embodiment of the present invention.

FIG. 7 is a block diagram showing a third embodiment of the present invention.

FIG. 8 is a block diagram showing a fourth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 20 ... Control MPU, 21 ... Power supply control circuit, 22 ... Display device, 23 ... Key input device, 24 ... Key press detection means, 25 ... Key press time calculation means, 26 ... Key input determination means, 27 ... Communication status information, 28 key input determination information

Claims (9)

[Claims] 1. A power control method for determining whether a key input is valid or invalid based on a continuous pressing time of a power key in a power on / off control of the portable communication terminal. A power control method in a portable communication terminal, wherein key input determination information indicating time is set in accordance with the status of the terminal. 2. A portable communication terminal, comprising: a key input device;
Key press detecting means for detecting a key press state of the key input device of the communication terminal, key press time calculating means for calculating a time during which the key is kept pressed, terminal status information indicating the status of the terminal, Key input determination information, which is reference time information for corresponding key operation determination, and the key press detection means
Key input determination means for determining operation information from data from the key press time calculation means, communication status information, and key input determination information, and the control of the power supply circuit performed based on the result provides a plurality of key input determination information. Power control in a portable communication terminal having judgment information corresponding to a terminal situation, wherein the key input judgment means judges validity / invalidity of key input by comparing the reference time and the key pressing time as the judgment information. method. 3. The power supply control method according to claim 1, wherein the terminal status information is communication status information indicating a communication status such as “incoming” or “standby”. 4. A power supply control method in a portable communication terminal according to claim 1, wherein said terminal status information is function selection status information indicating a status of function selection such as "auto redial" and "phone number search". 5. The power supply control method according to claim 1, further comprising a movable antenna and an antenna status detecting means for detecting an antenna status of the antenna (storage state / pull-out state). Power control method in the portable communication terminal, which is antenna status information indicating “storage” / “drawer” status of the mobile communication terminal. 6. The power supply control according to claim 1, wherein the portable communication terminal comprises a terminal main body and a terminal movable section of a flipper, and further comprises a terminal open / close state detecting means for detecting an open / close state of the terminal movable section. A power control method in a portable communication terminal, wherein the terminal status information is terminal opening / closing status information indicating the opening / closing status of the movable body. 7. A power control method for a portable communication terminal according to claim 1, wherein said terminal status information is status information represented by a combination of a plurality of communication statuses according to claims 2 to 5. 8. The key type conversion information according to claim 3, wherein the key input determination information is, in addition to reference time information for key operation determination corresponding to a communication status, key type conversion information for converting a type of an input key according to a communication status. A power supply control method in a portable communication terminal that supports a function that allows an incoming call to be answered even when a key other than the incoming call answering key is operated when receiving a call. 9. The key input determination information according to claim 1, 2, 3, 4, 5, 6, 7, or 8, wherein the key input determination information is obtained from a terminal status information and a result of a key press detection means using a conversion table. A power control method in the portable communication terminal that is time information.