JPH09261755A - Portable terminal equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress useless power consumption. SOLUTION: An identification code of a public base station whose area reaches that of a private base station is stored in a built-in memory of a microcomputer. When synchronization is not set to any of control channels of the public base station and the private base station, the control channel of the public base station and that of the private base station are alternately received (ST1-ST8). When the control channel of the public base station is received and the synchronization with the control channel is set up, whether or not the identification included in the control channel is coincident with the identification code stored in the built-in memory is discriminated (ST3, ST12). When coincident, that is, the portable terminal equipment is resident in the vicinity of the private base station, the state is transited to a state to receive the control channel of the private base station. On the other hand, when dissident, that is, the portable terminal equipment is apart from the private base station, the terminal equipment makes position registration and transits to the standby state by the control channel of the public base station (ST13, ST14).

Description

Detailed Description of the Invention

[0001]

The present invention relates to a portable terminal device such as a portable telephone. More specifically, the present invention relates to a portable terminal device that attempts to suppress unnecessary power consumption by reducing the frequency of shifting to the reception state of the control channel of the self-employed base station when it is far from the self-employed base station.

[0002]

2. Description of the Related Art Simplified mobile phones (PHS: Personal H)
andyphone System) receives the control channel of the base station, establishes synchronization with the control channel, and then transitions to a standby state. Conventionally, even in the standby state using the control channel of the public base station, the standby state of the public is stopped at regular intervals and the state shifts to the state of receiving the control channel of the private base station, thereby achieving the pseudo public private dual mode. .

[0003]

In the above-mentioned pseudo-public self-employed dial mode, when in the standby state by the control channel of the public base station, the public stand-by is stopped at a constant cycle regardless of the use position. It shifts to the state of receiving the control channel of. Therefore, for example, even in a workplace far away from the area of the private base station, when it is in the standby state by the control channel of the public base station, it stops the standby by the control channel of the public base station at a constant cycle and controls the private base station. Move to the state of receiving channels. Therefore, power is wasted.

Accordingly, the present invention provides a portable terminal device capable of suppressing wasteful power consumption.

[0005]

A portable terminal device according to the present invention includes an identification code storage means for storing identification codes of some or all public base stations in the vicinity of a self-employed base station, and a self-employed base station or a public base station. Receiving means that selectively receives the control channel of the base station and establishes synchronization with the control channel and then shifts to a standby state, and a control channel that receives the control channel of the public base station and receives this control channel When the ID code of the public base station included in the ID code matches the ID code stored in the ID code storage means, the receiving means is controlled so as to increase the frequency of shifting to the state of receiving the control channel of the private base station. And a control means.

The identification code storage means stores the identification code of a public base station in the vicinity of the self-employed base station, for example, an area. In this case, the identification code of one or a plurality of public base stations is stored. If there is no public base station near the self-employed base station, the identification code of the public base station is not stored in the identification code storage means. For example, when registering a self-employed base station (master device) as a slave device, the control channel of the public base station is received, and the identification code included in the control channel of the public base station is stored in the identification code storage means. To be done.

When the control channel of the public base station is received and the identification code included in the control channel matches the identification code stored in the identification code storage means, the receiving means receives the control channel of the private base station. It is controlled so that the frequency of shifting to the state becomes high. In this case, when the mobile station comes near the self-employed base station, the identification codes match, and the frequency of shifting to the control channel reception state of the self-employed base station increases. On the contrary, at a position away from the self-employed base station, the frequency of shifting to the control channel reception state of the self-employed base station becomes low.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a simplified portable telephone 10 as an embodiment.

The telephone 10 includes a microcomputer 11 (hereinafter, referred to as a “microcomputer”) for controlling the entire system, an antenna 12 for transmission and reception,
2 is down-converted to a π / 4 shift QPSK (Quadrature Phase Shim).
ft Keying) signal, a radio section 13 for up-converting a π / 4 shift QPSK signal output from a digital modulation / demodulation section described later to obtain a transmission signal of a predetermined frequency, and an output from the radio section 13 The π / 4-shifted QPSK signal is demodulated to obtain received data, and TDMA (Time Division Multiple Acces
s) a digital modulation / demodulation unit 14 for modulating transmission data output from the processing unit to obtain a π / 4 QPSK signal.

Further, the telephone set 10 selects data of a preset downlink slot from the received data (time-division multiplexed data of a plurality of slots) output from the digital modulation / demodulation unit 14 and separates it into control data and compressed voice data. At the same time, it has a TDMA processing unit 15 that multiplexes compressed audio data output from an audio codec unit, which will be described later, and control data output from the microcomputer 11 into a preset upstream slot.

The telephone 10 has a TDMA processing unit 15.
The received audio signal is obtained by performing a decoding process (including an error correction process) on the output compressed audio data, and a compression encoding process (including an error correction code addition process) is performed on the transmission audio signal. ) To obtain compressed audio data, and an audio codec 16
It has a speaker (receiver) 17 to which a received audio signal is supplied, and a microphone (speaker) 18 for supplying a transmission audio signal to the audio codec section 16.

The telephone 10 has a voice codec 1
6, the DTMF (Dual Tone) obtained as the received voice signal
Multiple frequency) signal is converted into key data corresponding to special input keys of “*” and “#” and numeric keys of “0” to “9”, and supplied to the microcomputer 11.
The key data corresponding to the special input keys of “*” and “#” and the numeric keys of “0” to “9” output from DT
A DTMF modulator / demodulator 19 which converts the MF signal into an MF signal and supplies the MF signal to the audio codec 16 as a transmission audio signal;
A conversion format storage unit 20 for converting key data output from the F modem unit 19 into character data. The conversion format storage unit 20 is connected to the microcomputer 11.

The telephone 10 records a received voice signal obtained by the voice codec section 16 in the answering machine mode, and transmits a recorded received voice signal and a pre-recorded response message (voice signal) to a key described later. An audio recording / reproducing unit 21 for playing back by operation of the input unit or control of the microcomputer 11, a vibration generating unit 22 for vibrating the telephone body under the control of the microcomputer 11 when an incoming call is received when the vibration mode is set, and a vibration mode Is not set, the microcomputer 11
And a ringing tone output unit 23 that outputs a ringing tone under the control of. Here, the audio recording / reproducing unit 21 has, for example, a semiconductor memory as a recording medium of the audio signal. The operation of the audio recording / reproducing unit 21 is controlled by the microcomputer 11,
A signal indicating the operation state of the audio recording and reproducing unit 21 is supplied from the audio recording and reproducing unit 21 to the microcomputer 11.

The telephone 10 instructs a call,
To enter a call key for answering an incoming call, an end key for ending the call state, a function key for setting the phonebook registration mode, setting an answering machine mode, a vibration mode, etc., for inputting a telephone number, etc. The key input unit 24 includes a numeric keypad, a special input key, a recording key and a reproduction key for operating the recording and reproduction of the audio recording / reproducing unit 21, and a volume adjustment key. The key input unit 24 is connected to the microcomputer 11, and the key input unit 2 is
4 key operations are monitored.

The telephone 10 has a nonvolatile memory 25 for storing telephone directory data, redial data, character message data transmitted from the other party, mode setting information, and the like; Timer section 28 that counts time from an arbitrary point in time
And a liquid crystal display (LCD) 26 for displaying the state of the system, the telephone number of the other party at the time of calling, a text message transmitted from the other party, and the like. The liquid crystal display 26 is driven by an LCD driver 27 controlled by the microcomputer 11.

2 and 3 show the appearance of the telephone 10, and the parts corresponding to those in FIG. 1 are designated by the same reference numerals.

An antenna 12 is provided at the upper end of the telephone body 40.
Is arranged. Further, a sound passage hole 41 for guiding sound from the built-in speaker to the outside is formed above the main body 40, and the liquid crystal display 26 is disposed below the sound passage hole 41. further,
The microphone 18 is arranged below the main body 40. A call key 42, a function key 43, and an end key 44 are horizontally arranged below the liquid crystal display 26 in the center of the main body 40. The end key 44 is a power on / off key when pressed for a long time.

Further, below the keys 42 to 44, there are left, right, up and down cursor movement keys 45, a registration key 46 for shifting to a telephone directory registration mode or the like, a clear key 47 for clearing input data, a ten key 48, Special input key 4
9,50 are arranged. Here, the cursor movement key 4
The "↑" key which constitutes 5 also serves as a key for starting a search of redial data or telephone directory data, and "↓"
The key is also used to shift to a character transmission mode during a telephone call and to confirm received character data.

The main body 40 is provided with a key protection lid 51 which is openable and closable with the arrangement portion of the microphone 18 as a fulcrum. When the key protection lid 51 is closed, the keys 45 to 50 are covered. Therefore, the keys 45-5
Operation 0 must be performed with the key protection cover 51 opened. FIG. 2 shows a state in which the key protection cover 51 is removed.

The voice recording / reproducing unit 2 is provided on the side of the main body 40.
Recording key 5 for operating recording and playback of 1 (see FIG. 1)
2 and a reproduction key 53, and a volume adjustment key 54 for adjusting the volume. The volume adjustment key 54 is
The configuration is such that the volume increases when the side is pressed, and decreases when the side is pressed.

Next, the operation of the telephone 10 shown in FIG. 1 will be described.

Since the control channel is out of synchronization when the power is turned on, the control channel transmitted from the public base station or the self-employed base station is received and the synchronization with the control channel is established. Thereafter, the state shifts to a standby state. Note that when synchronization with the control channel of the public base station is established, the location registration that the user is in the area of the base station is performed using the communication channel before shifting to the standby state. Location registration is not performed for the self-managed base station, but registration processing as a slave unit is required.

In this embodiment, the pseudo public self-employed dial mode is achieved by selectively receiving the control channels of the public base station and the self-employed base station. Therefore, the microcomputer 11 controls the reception state according to the flowchart of FIG.

First, in step ST1, a timer is started. Here, the timer is constituted by the timer unit 28, and is reset at the time of start. Then, in step ST2, the wireless unit 13 is controlled to be in a state of receiving the control channel of the public base station.

Next, in step ST3, it is determined whether the control channel is received and the synchronization with the control channel is established. If the synchronization is not established, step ST4
It is determined whether or not the time t1 has elapsed. When the time t1 has not elapsed, the process returns to step ST2 and the state of receiving the control channel of the public base station is continued.

When the time t1 has elapsed in step ST4, the timer is started in step ST5, and the radio unit 13 is controlled to receive the control channel of the self-employed base station in step ST6.

Next, in step ST7, it is determined whether or not the control channel is received and the synchronization with the control channel is established. If synchronization is not established, step ST8
Then, it is determined whether or not the time t2 has elapsed. When the time t2 has not elapsed, the process returns to step ST6 and the state of receiving the control channel of the self-employed base station is continued.

When the time t2 has elapsed in step ST8, it is determined in step ST9 whether or not synchronization with the public control channel is established. When the synchronization is not established, the process returns to step ST1 and shifts to the state of receiving the control channel of the public base station.

When synchronization is established in step ST7,
In step ST10, the control channel of the self-employed base station is set in a standby state. Then, in step ST11, it is determined whether or not the control channel cannot be received and the control channel is out of synchronization. When the control channel is out of synchronization, the process returns to step ST1 and the control channel of the public base station is received. Move.

When synchronization is established in step ST3, the identification code (CS-ID) included in the control channel of the public base station received in step ST12 is
It is determined whether or not it matches with an identification code described later stored in the built-in memory of the microcomputer 11. When they match, the process proceeds to step ST5 and shifts to the state of receiving the control channel of the self-employed base station. On the other hand, if they do not match, the location registration process is performed in step ST13, and then step S
At T14, the control channel of the public base station is set in a standby state.

Next, in step ST15, a timer is started, and in step ST16, it is determined whether or not the synchronization with the control channel is lost. When the synchronization is not lost, it is determined in step ST17 whether the time t3 has elapsed. When the time t3 has not elapsed, the process returns to step ST16. On the other hand, when the time t3 has passed,
It returns to step ST1 and shifts to the state of receiving the control channel of the public base station. When the synchronization is lost in step ST16, the process similarly returns to step ST1 and shifts to the state of receiving the control channel of the public base station.

When the synchronization with the public control channel is established in step ST9, the process proceeds to step ST13, where the location registration process is performed and the control channel of the public base station is shifted to the standby state.

In step ST12, the microcomputer 1
It is determined whether or not the identification code stored in the built-in memory of No. 1 and the identification code included in the received control channel match.
For example, this is performed when the telephone (child device) 10 is registered in the self-employed base station (parent device). By performing this registration, the telephone (slave unit) 10 can be used in the area of the self-employed base station (parent device).

The flow chart of FIG. 5 shows an example of registration processing by the microcomputer 11.

In the registration processing mode, first, step S
At T21, registration processing is performed. Then, step ST22
Then, the timer is started, and in step ST23, the wireless unit 13 is controlled to be in a state of receiving the control channel of the public base station.

Next, in step ST24, it is determined whether the control channel is received and the synchronization with the control channel is established. If synchronization is not established, step ST2
At 5, it is determined whether the time t0 has elapsed. Time t0
If has not elapsed, return to step ST23,
The state of receiving the control channel of the public base station is continued. On the other hand, when the time t0 has elapsed, the registration processing mode ends.

When the control channel of the public base station is received in step ST24 and the synchronization with the control channel is established, in step ST26, the identification code (CS-) of the public base station included in the control channel is received. ID) is stored in the built-in memory, and the registration processing mode ends.

By the registration processing according to the flowchart of FIG. 5, the identification code of the public base station whose area extends to the self-employed base station can be stored in the built-in memory of the microcomputer 11. in this case,
When there are a plurality of public base stations covering the area of the self-employed base station, the identification codes of all the stations may be stored, or the identification codes of the upper several stations having high radio wave levels may be stored. In addition, when the control channel of the self-employed base station is received and synchronization with the control channel is established, not when performing the registration process to the self-employed base station, the control channel of the public base station is received and The included identification code may be stored. Further, the identification code of a public base station near the self-employed base station may be input by operating the key input unit 24 and stored in the built-in memory of the microcomputer 11 not automatically.

In the telephone 10 shown in FIG. 1, the telephone number of the other party is input by operating the key of the key input unit 24 (numerical keypad 48 or the like), or the call key 42 is pushed after the redial data or the telephone directory data is retrieved. When operated, first, the telephone number data or the like is supplied as control data from the microcomputer 11 to the TDMA processing unit 15 and transmitted to the base station through the control channel. As a result, the line connection with the other party is established, and a call is made possible.

Here, the call is performed using the call channel, but during the line connection processing, the control channel is used to transmit the communication frequency and slot position data of the call channel from the base station as control data for TDMA processing. It is supplied from the unit 15 to the microcomputer 11. The microcomputer 11
The radio section 13 is controlled based on the communication frequency data so that the transmission / reception frequency matches the communication frequency of the communication channel, and the slot selected by the TDMA processing section 15 is set based on the slot position data. Therefore, the call is made using the call channel notified from the base station.

When the base station transmits call data as control data using the control channel and the call data is supplied from the TDMA processing section 15 to the microcomputer 11 to detect an incoming call, the microcomputer 11 issues a ring tone. The output unit 23 is controlled to output a ringing tone, or the microcomputer 11 controls the vibration generator 22 to vibrate the telephone body 40.

While this calling operation is being performed,
When the call key 42 is operated and there is a response, the microcomputer 11
Response data is more control data than the TDMA processing unit 15.
And transmitted on the control channel to the base station. As a result, the line connection with the other party is established, and a call is made possible. Also in this case, the communication is performed using the communication channel notified from the base station.

In the call state, the compressed voice data transmitted through the call channel is output from the TDMA processing section 15. The compressed audio data is supplied to the audio codec 16 and subjected to a decoding process, and then converted into an analog signal. Then, the received audio signal output from the audio codec section 16 is supplied to the speaker 17 and the speaker 1
7 outputs a sound.

The transmission voice signal output from the microphone 18 is supplied to the voice codec section 16 and converted into a digital signal, which is then compression-encoded to form compressed voice data. Then, the audio codec section 16
The output compressed audio data is supplied to the TDMA processing unit 15 and transmitted to the other party through a communication channel.

In this case, "↓" of the cursor movement key 45
By operating the keys, ten keys 48 and special input keys 4
The character data can be transmitted using 9, 50. In this case, the DTMF signal corresponding to the operated key is DT
The audio codec section 16 is output from the MF modulation / demodulation section 19.
Is supplied as a transmission audio signal.

Further, as described above, the calling data is TDM.
When an incoming call is supplied from the A processing unit 15 to the microcomputer 11 and an incoming call is detected, when the answering machine mode is set, a ringing tone is output only for a predetermined time, and the telephone is automatically answered to be in a call ready state. . Then, after a response message to the effect that the received voice signal is recorded is transmitted to the calling side, the recording of the received voice signal is started by the voice recording / reproducing unit 21.

When the other party sends character message data by a DTMF signal during answering machine or during a call, the key data output from the DTMF modulator / demodulator 19 is stored in a conversion format under the control of the microcomputer 11. It is converted to character data by referring to the section 20, and the character data is written in the character message area of the non-volatile memory 25. When the character data is written in the non-volatile memory 25 as described above, the character message based on the character data is displayed on the liquid crystal display 26 and confirmed by long-pressing the “↑” key of the cursor movement key 45. It becomes possible.

In the present embodiment, when the control channel of the public base station is received and the synchronization with the control channel is established, the identification code included in the control channel is stored in the internal memory of the microcomputer 11. Only when it matches the identification code, the control channel of the private base station is received, and when it does not match, the control channel of the public base station shifts to the standby state.

Since the identification code stored in the built-in memory is the identification code of the public base station whose area extends to the self-employed base station, the identification code will match when it comes close to the self-employed base station. Move to the reception state of the control channel of the station. Therefore, on the contrary, when it is far from the self-employed base station, the identification code does not match, and it does not shift to the control channel reception state of the self-employed base station, but shifts to the standby state by the public base station control channel after location registration. To do. Therefore, it is possible to prevent wasteful power consumption.

Further, in the above-described embodiment, when the control code cannot be received even after the time t2 when the control code of the self-employed base station is shifted to the state in which the identification codes match and the control channel cannot be received, the public base station It shifts to the standby state by the control channel of No. 3, and at least the standby by the control channel of the public base station becomes possible.

Further, in the above-described embodiment, when the time t3 elapses in the standby state by the control channel of the public base station, the state is changed to the state of receiving the control channel of the public base station again. In the station area, it is possible to shift to the stand-by state by the control channel of the self-employed base station. By using a self-employed base station, the usage fee can be reduced, and there is no limitation on the number of connected devices as in the case of using a public base station.

Although the above-described embodiment is an application of the present invention to a simple type portable telephone, the present invention selectively receives control channels of public base stations and self-employed base stations and sets them as control channels. Needless to say, the present invention can be similarly applied to other portable terminal devices that shift to the standby state after the synchronization is established.

[0053]

According to the present invention, the frequency of shifting to the reception state of the control channel of the self-employed base station is reduced when the remote station is away from the self-employed base station, and wasteful power consumption can be suppressed. .

When the control code of the public base station is received and the identification code of the public base station included in this control channel matches the identification code stored in the identification code storage means, the control channel of the private base station is received. When the control channel cannot be received even after a certain period of time, the frequency is lowered by shifting to the state of receiving the, by shifting to the standby state by the control channel of the public base station,
At least there is an advantage that the control channel of the public base station can be used for standby.

Further, when the control code of the public base station is received and the identification code of the public base station included in this control channel matches the identification code stored in the identification code storage means, the control channel of the self-employed base station. In order to reduce the frequency by shifting to the state of receiving the public base station, by shifting to the state of receiving the control channel of the public base station when a certain time has elapsed in the standby state by the control channel of the public base station. In the area of the self-employed base station, it becomes possible to shift to the standby state by the control channel of the self-employed base station.

[Brief description of drawings]

FIG. 1 is a block diagram showing a simplified mobile phone as an embodiment.

FIG. 2 is a front view showing the simplified mobile phone (with a key protection cover removed).

FIG. 3 is a side view showing a simplified mobile phone.

FIG. 4 is a flowchart showing control of a reception state in the embodiment.

FIG. 5 is a flowchart showing control at the time of registration processing to a self-employed base station (master device).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Simplified mobile phone 11 Microcomputer 12 Transmission / reception antenna 13 Radio unit 14 Digital modulation / demodulation unit 15 TDMA processing unit 16 Audio codec unit 17 Speaker (receiver) 18 Microphone (transmitter) 19 DTMF modulation / demodulation unit 20 Conversion format storage unit 21 Voice recording / reproducing unit 22 Vibration generating unit 23 Ring output unit 24 Key input unit 25 Non-volatile memory 26 Liquid crystal display 28 Timer unit

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yoshito Takeshima 1-2-111 Ikenota, Taito-ku, Tokyo Aiwa Co., Ltd. (72) Inventor Ryoji Terada 1-2-11 Ikenota, Taito-ku, Tokyo Aiwa Inside the corporation

Claims (7)

[Claims] 1. An identification code storage means for storing identification codes of some or all public base stations near the self-employed base station, and selectively receiving a control channel of the self-employed base station or the public base station. Receiving means that shifts to a standby state after establishing synchronization with the control channel, receives the control channel in a state of receiving the control channel of the public base station, and identifies the public base station included in the control channel. And a reception control means for controlling the reception means so that the frequency of shifting to a state of receiving the control channel of the self-employed base station becomes high when the identification code stored in the identification code storage means matches. A portable terminal device characterized by the above. 2. A public base station in the vicinity of the self-employed base station,
The portable terminal device according to claim 1, wherein the portable terminal device is a public base station that covers an area of the self-employed base station. 3. The reception control means receives the control channel in a state of receiving the control channel of the public base station, and the identification code of the public base station included in the control channel is stored in the identification code storage means. 2. The portable terminal device according to claim 1, wherein the reception means is controlled so as to shift to a state of receiving the control channel of the self-employed base station when the stored identification code matches. 4. The reception control means shifts to a standby state by the control channel of the public base station when the control channel of the private base station is not received even after a predetermined time has elapsed in the state of receiving the control channel of the self-employed base station. 4. The portable terminal device according to claim 3, wherein the receiving means is controlled so as to do so. 5. The reception control means controls the reception means so as to shift to a state of receiving the control channel of the public base station when a predetermined time has elapsed in a standby state of the control channel of the public base station. The portable terminal device according to claim 3, wherein: 6. The reception control means controls the reception means so as to receive the control channel of the public base station during the registration processing of the self-employed base station, and the received control channel of the public base station. The portable terminal device according to claim 1, wherein the identification code included in is stored in the identification code storage means. 7. The portable terminal device according to claim 6, wherein the identification code storage means stores identification codes of some or all of the public base stations whose area extends to the self-employed base station.