JP3098718B2 - Mobile phone - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable telephone which periodically communicates with a base station and determines whether or not it is within an available service area (hereinafter simply referred to as "service area"). The present invention relates to a mobile phone that can be used sufficiently by displaying the fact that the user is in the area, thereby increasing the chances of use.

[0002]

2. Description of the Related Art A portable telephone communicates with a radio communication facility called a base station installed in various places, and calls another telephone or the like connected to a public telephone network via the base station. For this reason, depending on circumstances such as the electric field strength and the positional relationship between the base station and the mobile phone, there are areas where the mobile phone cannot be used (out of service area, hereinafter simply referred to as “out of service area”).

[0003] In addition, a control station or the like that controls each base station constantly monitors the position of the mobile phone in order to reduce the load on the entire system due to invalid calling of the mobile phone. Is communicating with a mobile phone. Therefore, the mobile phone measures the electric field strength using radio waves of communication from the base station for monitoring this position, and determines whether the mobile phone is in or out of range.
It is displayed.

A conventional portable telephone will be described with reference to FIG. FIG. 3 is a configuration block diagram of a conventional mobile phone. As shown in FIG. 3, a conventional mobile phone includes a microphone 1, an A / D converter 2, an encoder 3, a modulator 4,
A transmitting unit 5, a receiving unit 6, a demodulating unit 7, a decoding unit 8,
It comprises a D / A conversion unit 9, a speaker 10, a CPU 11, a comparator 12, a display control unit 13, and a display unit 14.

Next, the function of each part will be described in detail. The microphone 1 converts the voice around the mobile phone, in particular, the voice of the user into an analog voice signal, amplifies the analog voice signal, and A / D
The data is output to the converter 2. The A / D converter 2 converts an analog audio signal input from the microphone 1 into digital audio data and outputs the digital audio data to the encoder 3.

The encoding section 3 performs processing necessary for transmission, such as adding an error correction code to the digital audio data input from the A / D conversion section 2 and converting the digital audio data into a predetermined code sequence. Then, the data is output to the modulation unit 4 as digital data. The modulator 4 modulates the digital data input from the encoder 3 by a specific modulation method, and outputs the modulated data to the transmitter 5 as a modulated signal. The transmitting section 5 transmits a modulated signal input from the modulating section 4 to a base station via an antenna.

Receiving section 6 receives a radio wave transmitted from a base station, detects the received electric field strength, and detects a signal indicating the magnitude of the detected received electric field strength (hereinafter, referred to as a received electric field strength signal). ) Is output to the CPU 11, and the received radio wave is converted into a baseband signal (modulated signal) and output to the demodulation unit 7. The demodulation unit 7 demodulates the modulated signal input from the reception unit 6 and outputs the demodulated signal to the decoding unit 8 as digital data.

[0008] The decoding unit 8 performs error correction and the like on the digital data input from the demodulation unit 7 and outputs the digital data to the D / A conversion unit 9 as digital audio data. The number is output to the CPU 11. The D / A converter 9 converts digital audio data input from the decoder 8 into an analog audio signal and outputs the analog audio signal to the speaker 10. The speaker 10 is D
It converts an analog audio signal input from the / A converter 9 into audio and outputs the audio.

[0009] The CPU 11 receives the input of the received field strength signal from the receiving section 6, further receives the number of errors from the decoding section 8, and outputs them to the comparator 12. Further, the CPU 11 receives an input of the result of the out-of-service / in-service determination from the comparator 12 and causes the display control unit 13 to display the result of the determination.

The comparator 12 performs an operation based on the received electric field strength signal input from the CPU 11 and the number of errors to determine whether the area is out of service or within service. In particular,
If the received electric field strength signal is smaller than a certain value or if the number of errors is larger than a certain number, it is determined that the mobile terminal is out of the service area. is there. Here, the comparator 12 may perform other operations. That is, if the comparator 12 performs the out-of-service / in-service determination based on a certain standard, the description here does not lose generality.

The display control unit 13 outputs the result of the out-of-service / in-service determination instructed by the CPU 11 to be displayed on the display unit 14. The display unit 14 is an LCD (Liquid
Cristal Display) for displaying outside / in the service area under the control of the display control unit 13. In addition, CPU
The display control unit 11, the display control unit 13, and the display unit 14 perform out-of-service / in-service determination and display, and also perform control / display such as a telephone directory function as an additional function of the mobile phone. However, they are omitted here for the sake of simplicity.

Next, the operation of the conventional portable telephone will be described. However, since the functions related to general telephone calls do not relate to the characteristic parts of the present invention, the description is omitted.
Here, only the operation for realizing the function of judging outside / in-service area and displaying the same will be described. First, the receiving unit 6 receives a radio wave from a base station via an antenna,
The received electric field intensity is detected, and the detected electric field intensity is output to the CPU 11 as a received electric field intensity signal, and the received radio wave is converted into a modulation signal and output to the demodulation unit 7.

The modulated signal is demodulated by a demodulation unit 7 to become digital data, and the digital data is decoded by a decoding unit 8.
Is converted into a digital audio signal by processing such as error correction. The number of errors detected during the error correction is output to the CPU 11.

Then, the CPU 11 receives the input of the received electric field strength signal from the receiving unit 6, further receives the input of the number of errors from the decoding unit 8, outputs them to the comparator 12, and outputs them to the comparator 12. Based on the determination, the outside / inside area is determined, and the result is output to the CPU 11. Then, the CPU 11 instructs the display control unit 13 to display the result of the determination, and the display control unit 13 displays the result of the determination on the display unit 14.

[0015]

However, in the above-mentioned conventional portable telephone, for example, when the portable telephone is located outside the service area even in the vicinity of the boundary between the service area and the outside service area, the comparator 1 is not used.
2 is determined to be out of the service area, and even if the user can enter the service area by moving even one step, the user cannot know it and often finds and uses a nearby public telephone. However, the use of the mobile phone is missed, and the significance of carrying the mobile phone is reduced, and there is a problem that the mobile phone cannot be fully utilized.

The present invention has been made in view of the above-mentioned circumstances, and displays a message indicating that the user has recently been in a service area even if the user is out of service area, and retreats to the user and moves to the service area. An object of the present invention is to provide a mobile phone that can be fully utilized by providing more opportunities to use it.

[0017]

According to a first aspect of the present invention, there is provided a portable telephone, comprising:
Out of service area / service area from received radio wave periodically transmitted from base station
Is determined, and whether or not the area is within the service area
If the service area is displayed, the service
If so, display out of service area and move from service area to service area.
Indicates that the vehicle was within the service area at a specific time in the past
Display the neighborhood and return to the service area within the specified time.
Out of service area if you do not return within the specified time
The present invention provides an opportunity to use the mobile phone for the user.

According to a second aspect of the present invention, there is provided a portable telephone, which converts a received radio wave periodically transmitted from at least a base station into a modulated signal and outputs the modulated signal. A receiving unit that outputs the electric field strength of a radio wave as a received electric field strength signal, a demodulation unit that demodulates the modulated signal and outputs the digital data as digital data, and an error added to the digital data upon receiving the input of the digital data. A decoding unit that outputs the number of errors detected from the correction code, a comparator that determines whether the received electric field strength signal and the number of errors are within a usable range or outside a usable range, A display unit for displaying the inside or outside the area,
Receiving decision of the comparator, a CPU for performing processing to output the result of the determination on the display unit, measures the specific time since the start, the when it is finished and the timer for outputting a time-out signal The CPU starts the timer when the CPU determines that the mobile terminal has moved from the service area to the outside of the service area in response to the determination of the comparator, and changes the display on the display unit to the service area.
Nearby display to show that you were within range recently in the past
To a specific time until the input of the timeout signal is received , or the judgment of the comparator within the specific time.
Until it is determined that the user has moved from outside the service area to the service area.
To the vicinity of the display is, to within a service area within the specific time
If it is determined that it has moved, change to the area display,
When the specific time has expired, the CPU performs a process of changing the display to the out-of-service display, thereby providing a user with an opportunity to use the mobile phone.

According to a third aspect of the present invention, there is provided a portable telephone according to the second aspect, wherein
When the PU has a first flag and a second flag , and if the mobile phone moves from the service area to the outside of the service area, the display section displays the service area if the service area is within the service area and sets the first flag to a certain logical state. If the first flag is the constant logic state, the logic state of the first flag is inverted and the first flag is inverted.
The flag of No. 2 is set to a certain logical state, a timer is started, and the vicinity is displayed on the display unit.
If the aircraft moves from outside the service area to the service area,
If the logic state is the constant logic state, the logic state is inverted.
Stop the neighborhood display and display the area.
And the timer is stopped, and the
When a timeout signal is received from the timer,
Inverts the logic state of the second flag and stops the neighborhood display
CPU for causing the display unit to perform out-of-service display
Therefore, it is possible to provide a user with an opportunity to use a mobile phone.

The above prior art invention of claim 4 for solving the problems, in claim 1 or claim 2 or claim 3 mobile phone according, near view, distance of the display or speaking
It is characterized by blinking the outside display or both, and performing near display using the existing display device
Thus, it is possible to appropriately provide a user with an opportunity to use a mobile phone while easily realizing the invention .

The above prior art invention of claim 5 for solving the problems, in claim 1 or claim 2 or claim 3 mobile phone according, certain time, 1 minute to about 2 minutes <br / It is characterized by that it is out of the service area, about 1-2 minutes
By not displaying the neighborhood after the degree has passed,
Recognizing that it is faster to find a nearby public phone than to return
And thereby increase the reliability of the neighborhood display.
Can, it is possible to provide precisely the opportunity to use the mobile phone to the user.

[0022]

Embodiments of the present invention will be described with reference to the drawings. Mobile phone according to the present invention (this device)
Indicates that the user has moved out of the service area, but does not immediately display the outside of the service area, but informs the user that he / she is in the vicinity of the service area for a specific period of time. It provides an opportunity for the utilization of the information.

This apparatus will be described with reference to FIG. FIG. 1 is a configuration block diagram of a mobile phone according to the present invention.

As shown in FIG. 1, this apparatus comprises a microphone 1
A / D conversion unit 2, encoding unit 3, modulation unit 4, transmission unit 5, reception unit 6, demodulation unit 7, decoding unit 8, D / A
The conversion unit 9, the speaker 10, the CPU 11, and the comparator 1
2, a display control unit 13, a display unit 14, and a timer 15.

The present apparatus has basically the same configuration as that of a conventional portable telephone, but differs from the conventional one in the processing in the CPU 11 and the addition of the timer 15.

The processing in the CPU 11 will now be described. As in the conventional case, the CPU 11 always receives the input of the received field strength signal from the receiving unit 6 and further receives the input of the number of errors from the decoding unit 8, Are sequentially output to the comparator 12, and the result of the out-of-service / in-service determination is input from the comparator 12 and displayed on the display control unit 13. Processing is also performed. FIG. 2 is a flowchart illustrating the processing of the characteristic part of the present invention in the CPU 11.

Here, the CPU 11 sets the first and second logic states to be constant (for example, "0") at the time of initialization.
A second flag (not shown) is provided. As will be described later, the first flag is used for temporarily storing the input from the comparator 12, and is used for the second flag. The flag is used for the purpose of indicating that the timer 15 is counting time, that is, that the unit has been in range recently. Here, the constant logic state at the time of initialization is set to “0”, but even if this is the inverted state “1”, the logical value is simply inverted, and there is no difference in configuration. . However, in the following description, a certain logical state at the time of initialization is described as “0”.

After initialization, the CPU 11 determines whether or not the result of the determination from the comparator 12 is within the service area (S1).
If it is within the range, the first flag is set to "1" (S2).
In addition, if it is out of the service area in the processing S1, the CPU 11
Instructs the display control unit 13 to display the out-of-service area (S
3) Return to the processing S1.

After executing the process S2, the CPU 11 receives the result of the determination from the comparator 12 again and determines whether or not it is out of the service area (S4). The flag of 1 is reset to "0", the second flag is set to "1" (it was within range recently), and the timer 15 is started (S5). In this process S4, the first flag is “1” (the result of the previous determination is within the range).
It is assumed that

If it is determined in step S4 that the result of the determination from the comparator 12 is within the service area, step S4 is repeated. Then, after the process S5, the CPU 11 instructs the display control unit 13 to display a display indicating that the vehicle was in the past area in the past (hereinafter, referred to as proximity display) (S6). Here, the proximity display may be performed by, for example, blinking a display (indicator) of the service area or outside the service area.

Further, when the result of the determination of the area is input from the comparator 12 (S7), the CPU 11 sets the first flag to "1" and resets the second flag to "0". Timer 1 to prevent invalid timing
5 is stopped (S8), and the process returns to step S1.

If the result of step S7 is that the terminal is out of the service area, C
The PU 11 determines whether or not a signal indicating that the time measurement has ended (hereinafter, referred to as a timeout signal) has been received from the timer 15 (S9).
If it is s), the second flag is reset to "0", and the display control unit 13 is instructed to stop the vicinity display and to perform the display outside the service area (S10), and returns to the processing S1. In step S9, if the input of the timeout signal has not been received (No), the process S7
Return to

The timer 15 is started by the CPU 11,
This is for measuring a preset fixed time. Here, the certain time is a time for performing the neighborhood display, and is appropriately set to, for example, about 1 to 2 minutes. If it is too long, it is faster to find a nearby public telephone. The timer 15 outputs a time-out signal to the CPU 11 when the time measurement is completed.
In addition, the timer 15 is stopped by the CPU 11 to keep time.
This is to stop timing.

The microphone 1, the A / D converter 2, the encoder 3, the modulator 4, the transmitter 5, the receiver 6, the demodulator 7, the decoder 8, / A converter 9 and speaker 1
0, the comparator 12, the display control unit 13, and the display unit 14 are the same as those of the related art, and thus the description thereof is omitted.

Next, the operation of the present apparatus will be described.
Only the display operation outside the service area will be described. First, considering that the user is moving within the service area, in this apparatus, the CPU 11 receives the input of the result of the service area determination from the comparator 12 by the same operation as in the related art.
The CPU 11 sets the first flag to “1” (the result of the previous determination is within range).

When the user steps out of the area and moves, the CPU 11 receives the result of the out-of-area determination from the comparator 12 and the first flag is "1".
Is reset to "0", and the second flag is set to "1".
(It was within the service area in the past) and the timer 15 is started.

Then, the timer 15 starts counting time, and the CP
U11 instructs the display control unit 13 to perform the neighborhood display. Then, the display unit 14 is controlled by the display control unit 13 to perform the neighborhood display.

If the user tries to use the apparatus and the vicinity is displayed, the user can retreat and return to the service area if possible, and can use the apparatus there. .

According to the portable telephone according to the embodiment of the present invention,
Even if you are located outside the service area,
This is displayed, and the user can get an opportunity to use the apparatus by moving backward and into the service area, so that the mobile phone can be fully utilized.

[0040]

According to the first aspect of the present invention, the base station is
Out of service area / reception area from received radio waves transmitted periodically
If it is within the service area based on the result of out-of-service /
Display, and if the result is out of service area / out of service area
For example, if you display out of service area and move from service area to service area,
Neighborhood table indicating that the area was within range recently in the past at a specific time
Display, and if you return to the area within a specific time, the area will be displayed,
If you do not return to the service area within the specified time, it is assumed that the mobile phone will display out of service area.
The three display modes of display, out-of-service display, and proximity display are realized, and the user is provided with an opportunity to use the mobile phone when returning, and has the effect of fully utilizing the mobile phone.

According to the second aspect of the present invention, the receiving unit is fixed.
It converts the received radio wave transmitted periodically into a modulated signal and outputs it, and outputs the electric field strength of the received radio wave as a received electric field intensity signal, and the demodulation section demodulates the modulated signal and outputs it as digital data for decoding. The digitizing unit detects an error in the digital data and outputs the number of errors, the comparator judges whether or not the reception field strength signal and the number of errors are within or outside the range, and outputs the result. A mobile phone that performs a process of displaying and outputting, and a display unit that displays a determination of in-service / out-of-service, including a timer that outputs a time-out signal after measuring a specific time after activation, and wherein the CPU includes a comparator. When it is determined that the vehicle has moved from the service area to the outside of the service area, the timer is started, and the display on the display unit is changed from the service area display to the
To change to a nearby display that indicates that you were within range
Specific time until receiving the timeout signal ,
Or within the specified time, from outside the service area to the service area based on the judgment of the comparator
Until it is determined that it has moved, display the neighborhood and specify
If it is determined that the vehicle has moved from outside the area to within the area,
Display when the specified time is over, the display changes to out of service area.
The call is being processed .
Regardless of the area, three tables of area display, out-of-area display, neighborhood display
The embodiment shown in the drawings is realized, and the user is provided with an opportunity to use the mobile phone when he returns, and the mobile phone can be fully utilized.

According to the invention of claim 3, the CPU:
Display the first flag indicating that the vehicle was within range and display the neighborhood
Has a second flag indicating that the
When the comparator determines that the vehicle has moved from the service area to the outside of the service area while displaying the service area on the display unit and indicating that the first flag was in the service area, the CPU sets the logical state of the first flag.
And the second flag is set to the logic state of the neighborhood display,
Activate the timer, make the display section display the vicinity, and display the vicinity
When the vehicle moves from outside the service area to the service area, the second flag
If the logical state is the side display, the logical state is reversed and
Perform the process of stopping the side display and displaying the area, and
Stops the timer.
Out signal is received, the second flag
The mobile phone according to claim 2, wherein the mobile phone is configured to invert the control state, stop the proximity display, and display the out-of-service area on the display unit. To provide users with the opportunity to use their mobile phone if they return to their place before a specific time ,
It can be displayed immediately when it comes,
In addition, there is an effect that an opportunity to use a mobile phone is provided accurately and the mobile phone can be fully utilized.

According to the fourth aspect of the present invention, the cellular phone according to the first, second, or third aspect of the present invention performs the proximity display by blinking the indicator within the service area and / or the indicator outside the service area. The effect of being able to perform proximity display using the display device of the present invention, providing the user with an appropriate opportunity to use the mobile phone while easily realizing the invention, and fully utilizing the mobile phone. There is.

According to the fifth aspect of the present invention, the specific time is set to about 1 to 2 minutes.
As it is the mobile phone described,
By not displaying the neighborhood after about a minute, the user can recognize that it is faster to search for a nearby public phone than to return, thereby increasing the reliability of the proximity display and allowing the user to do so. Thus, there is an effect that the opportunity to use the mobile phone is provided accurately, and the mobile phone can be fully utilized.

[0045]

[0046]

[Brief description of the drawings]

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

FIG. 2 is a flowchart illustrating processing of a characteristic part of the present invention in a CPU 11;

FIG. 3 is a configuration block diagram of a conventional mobile phone.

[Explanation of symbols]

1 ... microphone, 2 ... A / D conversion unit, 3 ... encoding unit,
4 ... Modulation unit, 5 ... Transmission unit, 6 ... Reception unit, 7 ... Demodulation unit, 8 ... Decoding unit, 9 ... D / A conversion unit, 10 ... Speaker, 11 ... CPU, 12 ... Comparator, 13 ... Display Control unit, 14 ... Display unit, 15 ... Timer

──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Kenji Kusano 3-14-20 Higashinakano, Nakano-ku, Tokyo International Electric Company (56) References JP-A 7-23083 (JP, A) JP-A Sho 62-102634 (JP, A) JP-A-4-258030 (JP, A) JP-A-7-170571 (JP, A) JP-A-5-48516 (JP, A) JP-A-6-276149 (JP, A) A) (58) Field surveyed (Int. Cl. ⁷ , DB name) H04B ^7/ 24-7/26 H04Q ⁷ /00-7/38

Claims (5)

(57) [Claims] And 1. A intends line determination of out-of-service / within the received radio wave transmitted periodically from the base station comparator, if within the service area / distance determination result, performs a distance display, out of range / distance of if the out-of-range by the determination result, intends line out-of-range display display
And parts, when moving from the distance out of range, a particular time, the row Align the vicinity indication that was close to the past recent years, the row Align the distance display Returning to close within a specified time, the specific time and a CPU to I line out-of-range display to go back to close to within
A mobile phone comprising: 2. At least periodically transmitted from a base station.
A receiving unit that converts a received radio wave into a modulated signal and outputs the same, and outputs the electric field strength of the received radio wave as a received electric field intensity signal; a demodulation unit that demodulates the modulated signal and outputs the data as digital data; A decoding unit that receives the input of data and outputs the number of errors detected from the error correction code added to the digital data; and a decoding unit that is within an available range from the reception field strength signal and the number of errors. A comparator for determining whether the area is outside the service area, a display unit for displaying the available service area or outside the service area, and a CPU for performing processing for receiving the judgment of the comparator and outputting the result of the judgment to the display unit If, counts a certain time since the start, the when it is finished and the timer for outputting a time-out signal
A, wherein the CPU starts the timer and determines that moves from within the service area receives the determination of the comparator, wherein
Change the display on the display from the area display to the area
It is changed in the vicinity of the display to indicate that there was a specific time to receive an input of the time-out signal, or the Japanese
Within the fixed time, it moves from outside the service area to the service area
Until it is determined that those dynamic causes the near view, the Japanese
When it is determined that the user has moved from outside the service area to the service area within a fixed time
If the specified time has expired
Is a CPU for performing a process of changing the display to an out-of-service display . 3. A CPU has a first flag and a second flag. If the CPU is in a service area, the CPU causes the display unit to display a service area and sets the first flag to a predetermined logic. State, and if the first flag is the predetermined logical state when the mobile phone moves from the service area to the outside of the service area, the logical state of the first flag is set.
And the second flag is set to a constant logic state,
Activate the timer, display the neighborhood on the display unit,
If the mobile phone moves from outside the service area to the service area during
If the second flag is the constant logic state,
Inverts the logical state, stops the proximity display, and displays the area display.
And stop the timer, and
During display, a timeout signal is input from the timer.
In this case, the logic state of the second flag is inverted and
The mobile phone according to claim 2, wherein the mobile phone is a CPU that performs a process of stopping a side display and displaying an out-of-service area on the display unit . 4. The mobile phone according to claim 1, wherein the near display is performed by blinking a display within a service area and / or a display outside a service area. 5. The mobile phone according to claim 1, wherein the specific time is about 1 minute to 2 minutes.