JP3049679B2 - Portable electronic devices - 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 electronic device having a computer unit for processing desired information by wireless communication.

[0002]

2. Description of the Related Art Conventionally, this type of electronic device has a wireless transmitting / receiving unit for performing wireless communication and a computer unit for performing data processing, and the wireless transmitting / receiving unit is not affected by high frequency noise from the computer unit during communication processing. For example, the wireless transmission / reception unit is protected in a box shape with a metal plate or the like so as to be shielded, and the interval between the computer unit and the antenna is increased, or the computer unit is shielded in the box shape with a metal plate or the like. In many cases, such protection measures are taken.

[0003]

However, in portable electronic devices that require miniaturization, miniaturization of the device while completely shielding the computer unit is a conflicting proposition. And the computer unit are arranged so that the distance between the computer unit and the computer unit is as large as possible. Therefore, there is a problem that the influence of high frequency noise from the computer unit cannot be completely removed.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a radio transmission / reception unit is configured to suspend a system state of a computer unit based on a communication processing state of the radio transmission / reception unit while the radio transmission / reception unit is in a carrier state. Provided is a small and inexpensive portable electronic device capable of performing a communication process stably by a wireless transmission / reception unit without being affected by high-frequency noise caused by system activation of a computer unit by performing a field strength reception process. With the goal.

[0005]

SUMMARY OF THE INVENTION A portable electronic device according to the present invention has a control means for setting and controlling a system state of a computer unit based on a communication processing state of a wireless transmission / reception unit, and a system of the computer unit by the control means. A timer means for activating when the state is in a halt state and measuring a signal reception time of the wireless transmission / reception unit; and a holding means for holding electric field strength information of the carrier received by the wireless transmission / reception unit at the end of the time measurement of the timer means. The means is configured to switch the system state of the inactive computer unit to the activated state based on the timing end state of the timer means.

Further, the control means is configured to cut off the power supply to the computer unit and set the system state to a sleep state.

Further, the control means is configured to reset the computer unit and set the system state to a sleep state.

[0008]

In the present invention, when a communication processing request is generated by the wireless transmission / reception unit, the control means sets the system state of the activated computer unit to a sleep state, and the timer means sets the wireless communication when the system state of the computer unit is in the sleep state. The timing of the signal reception time of the transmission / reception unit is started, and the holding unit holds the electric field strength information of the carrier received by the wireless transmission / reception unit at the end of the timing of the timer unit.
Then, the control means switches the system state of the inactive computer unit to the active state based on the time-out state of the timer means, sets the system state to the active state, and restarts the computer unit. The wireless transmission / reception unit can execute communication processing stably without being affected by high frequency noise.

The control means is configured to shut off the power supply to the computer unit to set the system state to a hibernate state, and to temporarily stop the generation of high-frequency noise in the computer unit. Wireless communication unit can execute communication processing stably without being affected by high-frequency noise generated when the system is started.

Further, the control means is configured to reset the computer unit to set the system state to a hibernate state, and to temporarily suppress the occurrence of high-frequency noise in the computer unit, thereby starting the system of the computer unit. The effect of the high-frequency noise that occurs is alleviated, and the wireless transmission / reception unit can execute the communication process stably.

The portable electronic device according to the present invention includes means for setting the system state of the computer unit based on the communication state of the wireless transmission / reception unit, and activation of the computer unit by the control means before the system state of the computer unit becomes inactive. Timer means for operating based on a low-frequency clock for measuring the signal reception time of the wireless transmission / reception unit, and holding means for holding the electric field strength information of the carrier received by the wireless transmission / reception unit at the end of the time measurement of the timer means. The control means switches the system state of the inactive computer unit to the active state based on the time-out state of the timer means.

Further, the control means is configured to cut off power supply to the computer unit and set the system state to a sleep state.

Further, the control means is configured to reset the computer unit and set the system state to a sleep state.

Further, the control means is configured such that the computer unit itself puts the computer unit into a halt state and puts the system state into a sleep state.

In the present invention, when a communication processing request is generated by the wireless transmission / reception unit or the computer unit, the control means sets the system state of the activated computer unit to the sleep state, and the time counting means operates based on the low frequency clock. Starts measuring the signal reception time of the wireless transmission / reception unit when the system state of the computer unit is in the halt state, and the holding unit holds the electric field intensity information of the carrier received by the wireless transmission / reception unit when the timer unit ends the time measurement. Then, the control means switches the system state of the inactive computer unit to the activated state based on the timing end state of the timer means, sets the system state to the activated state, resumes the activation of the computer unit, and executes communication processing by the wireless communication means. The wireless transmission and reception unit stably searches for the usable channel without being affected by high frequency noise generated with the operation of the computer unit,
The communication processing can be executed by using it.

Further, the control means is configured to shut off the power supply to the computer unit and set the system state to the sleep state, and to temporarily stop the generation of high-frequency noise in the computer unit, The wireless transmission / reception unit stably searches for the usable channel without being affected by the high-frequency noise generated by the above operation, and the communication processing can be executed using the channel.

Further, the control means is configured to reset the computer unit to set the system state to the sleep state, and to temporarily suppress the occurrence of high-frequency noise in the computer unit, thereby accommodating the operation of the computer unit. The wireless transmission / reception unit searches for the usable channel stably by mitigating the influence of the high frequency noise generated by the wireless transmission / reception unit, and can execute the communication processing using the channel. The system state is set to a hibernate state, the occurrence of high-frequency noise in the computer unit is temporarily reduced, and the wireless transmission / reception unit stably searches for the usable channel, and uses it to perform communication processing. Executable.

[0018]

【Example】

(Embodiment 1) FIG. 1 is a block diagram illustrating the configuration of a portable electronic device according to an embodiment of the present invention.

In FIG. 1, reference numeral 1 denotes a computer unit, which is a keyboard for inputting information, instructions, etc., input information,
A display device for displaying a processing result, a memory for storing data and a processing procedure shown in a flowchart to be described later, a processing unit for processing data according to a processing procedure stored in the memory, and communication of information processed by the processing procedure to the outside Communication interface. The computer unit 1 is connected to a sub CPU 2 via a control line 8, and the sub CPU 2 processes data according to a memory storing data and a program for executing a processing procedure shown in a flowchart described later, and a program stored in the memory. And a communication interface for communicating information processed in the processing procedure to the outside. It communicates with the computer unit 1 to transmit information. When the reset signal 7 is released, the computer unit 1 is started by the clock supplied from the oscillation circuit 14 via the clock line 12. The clock supplied from the oscillating circuit 14 via the clock line 12 is frequency-divided by the frequency dividing circuit 15, and the low-pass filter 19 outputs the frequency-divided output 13 of, for example, a cycle of 2 msec to the counter 16.

A wireless transmitting / receiving unit 3 communicates with an external device (not shown) via an antenna 4. The received electric field intensity detected by the wireless transmission / reception unit 3 is A / D converted by the A / D converter 18 and then latched by the latch circuit 17 via the A / D converter output line 25. When storing the received electric field strengths of a plurality of channels, the latch circuit 17 may be a fast-in fast-out type memory or an addressing type latch circuit. Reference numeral 5 denotes a battery for supplying a power supply voltage in accordance with the on / off state of the power switch 11.

Reference numeral 6 denotes a power supply monitoring IC that monitors the state of the power supply voltage from the battery 5 and sends a reset signal to the computer unit 1 and the AND gate 24 via the computer reset line 7. The AND gate 24 is connected to the sub CPU 2 via the sub CPU reset line 10 based on the reset signal and the output state from the computer unit 1.
Sends a reset signal. 20 is a ripple carrier out of the counter 16, 21 is a signal strength detection line, 22 is a latch data output line,
Is output to the sub CPU 2. 23 is a reset line, which is a computer unit 1
Is transferred to the counter 16. In addition, 9 is a control line.

In the portable electronic device configured as described above, when a request for communication processing by the wireless transmission / reception unit 3 is generated, the control unit sets the system state of the activated computer unit 1 to a sleep state, and the timer unit (counter). 16) starts measuring the signal reception time of the wireless transmission / reception unit 3 when the system state of the computer unit (sub CPU 2) is in the sleep state, and the holding unit (latch circuit 17) performs wireless transmission / reception when the timer unit (counter 16) finishes timing. The unit 3 holds the electric field strength information of the carrier received. Then, the control means (computer unit 1) switches the system state of the inactive computer unit (sub CPU 2) to the activated state based on the time measurement end state of the timer means (counter 16), and sets the computer unit (sub CPU 2). By restarting the boot,
The wireless transmission / reception unit 3 can execute communication processing stably without being affected by high-frequency noise generated when the computer unit (the sub CPU 2 in this embodiment) is activated.

Further, the control means is configured to shut off the power supply to the computer unit 1 and set the system state to the hibernate state, and to temporarily stop the generation of high-frequency noise in the computer unit 1, The wireless transmission / reception unit 3 can execute communication processing stably without being affected by high-frequency noise generated when the computer unit 1 is activated.

Further, the control means is configured to reset the computer unit 1 to set the system state to the sleep state, and to temporarily suppress the occurrence of high-frequency noise of the computer unit 1 to thereby control the computer unit 1. The effect of high-frequency noise generated when the system is started is reduced, and the wireless transmission / reception unit 3 can execute communication processing stably.

FIG. 2 is a flowchart showing an example of a first wireless communication processing procedure in the portable electronic device according to the present invention. Note that (1) to (9) indicate each step.

First, when the power switch 11 is turned on,
The computer unit 1 is reset by a reset signal sent from the power supply monitoring IC 6 via the computer unit reset line 7, and the computer unit 1 is reset by a reset signal sent via the sub CPU reset line 10 (1). Then
It is determined whether the computer unit 1 has started wireless communication (2). If NO, the computer unit 1 executes other processing (3) and returns to step (2).

On the other hand, if the determination in step (2) is YES, the radio transmitting / receiving unit 3 sets all channels to 1
A carrier sense process (detailed procedure will be described later) for receiving channels one by one and searching for a channel having a predetermined charge intensity or less is executed (4). Next, it is determined whether or not there is an available channel (5). If NO, the computer unit 1 "cannot communicate because there is no available channel".
Is displayed on a display unit (not shown) (6), and the process returns to step (2).

On the other hand, if the determination in step (5) is YES, an arbitrary empty channel, for example, a channel having the smallest channel number among the empty channels is selected (7). Next, communication is performed on the selected channel, that is, the computer unit 1 exchanges data with the sub CPU 2, and the sub CPU 2 performs communication with data conversion for exchanging data with the wireless transmission / reception unit 3 (8). Is determined (9),
If YES, return to step (2); if NO, return to step (8).

Hereinafter, the carrier sense processing operation shown in FIG. 2 will be described with reference to the flowchart shown in FIG.

FIG. 3 is a flowchart showing an example of a detailed procedure of the carrier sensing process shown in FIG. In addition,
(1) to (9) show each step.

First, the transmission / reception channel setting data is set to "0" (1). At this stage, no channel setting is performed on the wireless transmitting / receiving unit 3. Next, the computer unit 1 sets a channel (N = N + 1) in the wireless transmission / reception unit 3 via the sub CPU 2 (2).
Next, the sub CPU 2 is reset (3), and the reset line 23 of the counter 16 is released (4). Next, it waits until a predetermined time elapses until the counter 16 outputs the ripple carry out 20 (5), and when the ripple carry out 20 is output, the sub CPU 2 is released from the reset state (6). Next, by the processing performed during the standby time of the step (5), that is, the input of the counter 16 (2 msec per cycle) is counted,
For example, after counting 15 times, the ripple carrier out signal 20 is output, and the value of the A / D converter 18 is latched by the latch circuit 17, so that the latch data latched by the latch circuit 17 is output to the latch data output line 2.
The sub CPU 2 reads the data via the control line 2 and transmits the read data to the computer unit 1 via the control line 8 (7).

Next, the reset line 23 is reset (8) to determine whether the signal intensities of all the channels have been read (N = 10 (for example, when the number of channels N is 1 to 1).
10) is determined (9), and if YES, the process returns. If NO, the process returns to the step (2) to repeat the above process.

In the above embodiment, the case where the radio CPU 3 resets the sub CPU 2 during the communication process so that the radio CPU 3 does not receive the influence of the noise generated when the sub CPU 2 executes the process. As described later, the wireless transmission / reception unit 3 controls the power supply of the computer unit 1 to be turned off during the communication processing, and the influence of the noise generated with the execution of the data processing is controlled in the same manner as described above. 3 may not be provided.

FIG. 4 is a block diagram illustrating the configuration of a portable electronic device according to another embodiment of the present invention.

In the figure, reference numeral 51 denotes a computer unit having a built-in RAM 81, and the contents of the RAM 81 are held by a backup battery 80 (made of a lithium battery). The computer unit 51 is activated by a clock supplied from the oscillator 57 via the clock line 76.

A battery 54 supplies a constant power supply voltage to the circuit in accordance with the on / off state of the power switch 52. Reference numeral 53 denotes a power supply voltage monitoring IC which monitors a voltage state applied to the computer unit 51 and sends a reset signal to the computer unit 51 via a reset line 55. 56
Is a relay switch, and its O
N / OFF is controlled. 58 is a frequency divider and an oscillator 57
Divides the clock supplied through the clock line from the clock signal, and sends a divided clock having a predetermined frequency to the counter circuit 59. Reference numeral 60 denotes a latch circuit,
The received electric field strength detected by the A / D converter 61
After A / D conversion, the A / D converter output line 64
And the received electric field strength is latched via the. 63 is an antenna, 65 is an open collector inverter, and a reset control signal line 75 to which a resistor 78 whose one end is grounded is connected.
The reset signal is transmitted to the flip-flop 70 according to the state of the reset control signal input through the flip-flop 70. A reset line 74 outputs a reset signal output from the open collector inverter 65 to the flip-flop 70. The reset line 74 is pulled up by a resistor 66.

Reference numeral 67 denotes an open collector inverter which sends a reset signal to the counter 59 according to the state of a reset control signal input via a reset control signal line 79 to which a resistor 69 having one end grounded. 68 is a resistor for pulling up the potential of the counter input line.
Reference numeral 82 denotes a substrate on which chip components mounted by the power supply _VDD from the power supply line 71 are driven. 72 is a ground line, one end of which is connected to the ground line GND of the substrate 82. Reference numeral 76 denotes a latch data line which indicates the received electric field intensity latched by the latch circuit 60 to the computer unit 51
Enter the transfer. Reference numeral 77 denotes a communication line.

FIG. 5 is a flowchart showing an example of a second wireless communication processing procedure in the portable electronic device according to the present invention. Note that (1) to (9) indicate each step.

First, when the power switch 52 is turned on,
The initial state of the reset control signal lines 79 and 75 is “LOW”
So, after the counter 59 elapses, for example, 30 msec,
Carry out, and the flip-flop 70 changes the output Q to "H".
The relay drive circuit 73 sets the relay switch 5 to “IGH”.
6 is turned on, and after the computer unit 51 is reset by the reset line 55, the reset control signal line 79 is set to "HIGH", and then an initialization process is performed (1).

Next, the computer unit 51 determines whether or not wireless communication has started (2). If NO, the computer unit 51 executes other processing (3), and returns to step (2).

On the other hand, if the determination in step (2) is YES, the wireless transmission / reception unit 62 receives all the channels one by one and searches for a channel having a predetermined electric field strength or less. (To be described later) (4). Next, it is determined whether or not there is an empty channel (5).
Displays "No available channels could not be communicated" on the display (not shown) (6), and returns to step (2).

On the other hand, if the determination in step (5) is YES, an arbitrary empty channel, for example, the channel having the smallest channel number among the empty channels is selected (7). Next, communication is performed on the selected channel, that is, the computer unit 51 performs communication involving data conversion for exchanging data with the wireless transmission / reception unit 62 via the communication line 77 (8), and determines whether data communication is completed (9). ), YE
If S, return to step (2); if NO, return to step (8).

Hereinafter, the carrier sense processing operation shown in FIG. 5 will be described with reference to the flowchart shown in FIG.

FIG. 6 is a flowchart showing an example of the detailed procedure of the carrier sensing process shown in FIG. In addition,
(1) to (8) show each step.

First, the transmission / reception channel setting data is set to "0" (1). At this stage, no channel setting is performed on the wireless transmitting / receiving unit 62. Next, the computer unit 51 sets a channel (N = N + 1) in the wireless transmission / reception unit 62 (2). Next, the reset control signal line 79 is set to “LOW” (3), and subsequently, the reset control signal line 75 is set to “HIGH” (4).
Thereby, the flip-flop 70 is reset, the output Q becomes “LOW”, the relay drive circuit 73 is turned off, and the power supply of the computer unit 51 is turned off. Therefore, the reset control signal line 75 is turned off.

Next, it waits for a predetermined time to elapse until the counter 59 outputs the ripple carry out (5). For example, if the counter 59 outputs the ripple carry out after the lapse of 30 msec, the flip-flop 70
Of the relay drive circuit 7
3 is in the “ON” state, and the computer unit 51 is powered on. However, the reset control signal line 75,
Reference numeral 79 denotes a “LOW” state because the computer unit 51 is high impedance when the power is on.

Next, when the ripple carry out is outputted, the CPU goes to the RAM 81 to be backed up and recognizes that the carrier sense value is set in the latch data line 76 (6). Next, the latch circuit 60
The latched data latched in the latch data line 76
To read the electric field strength of the receiving channel (7). Next, it is determined whether or not the signal intensities of all the channels have been read (N = 10 (for example, when the number of channels N is 1 to 10) (8). If YES, the process returns. If NO, the process returns to (2). Repeat the process.

(Embodiment 2) FIG. 7 is a block diagram for explaining a configuration of a portable electronic apparatus according to an embodiment of the present invention.

In the figure, reference numeral 201 denotes a computer unit, which is a keyboard for inputting information, instructions, etc., a display device for displaying input information, processing results, etc., a memory for storing data, processing procedures shown in flowcharts to be described later, and the like. It has processing means for processing data according to the stored processing procedure, a communication interface for communicating information processed in the processing procedure to the outside, and the like. The computer unit 201 is connected to the sub CPU 2 via the control line 208.
02, the sub CPU 202 stores data and a program for executing a processing procedure shown in a flowchart described later, processing means for processing data in accordance with the program stored in the memory, and information processed in the processing procedure. It has a communication interface for external communication. It communicates with the computer unit 201 to transmit information. The computer unit 201 is activated by the clock supplied from the oscillation circuit 214 via the clock line 212 after the reset signal 207 is released. The clock supplied from the oscillating circuit 214 via the clock line 212 is frequency-divided by the frequency dividing circuit 215 and, for example, at a period of 2 m via the low-pass filter 219.
The output 213 after the division by the second is output to the counter 216.

A wireless transmission / reception unit 203 communicates with an external device (not shown) via an antenna 204. The received electric field strength detected by the wireless transmitting / receiving unit 203 is A
After being A / D converted by the / D converter 218, the signal is latched by the latch circuit 217 via the A / D converter output line 225. When storing the received electric field strengths of a plurality of channels, the latch circuit 217 may be a fast-in fast-out type memory or an addressing type latch circuit. Reference numeral 205 denotes a battery which supplies a power supply voltage corresponding to the on / off state of the power switch 211.

Reference numeral 206 denotes a power supply monitoring IC which is a battery 205
, And sends a reset signal to the computer unit 201 and the AND gate 224 via the computer reset line 207. The AND gate 224 is connected to the reset signal and the computer unit 20.
A reset signal is sent to the sub CPU 202 via the sub CPU reset line 210 based on the output state from the sub CPU 202. 220 is a ripple carrier out of the counter 216, 221 is a signal strength detection line, 222 is a latch data output line, and outputs the electric field strength data latched by the latch circuit 217 to the sub CPU 202. 2
Reference numeral 23 denotes a reset line, which is a computer unit 201.
Is transferred to the counter 216.
Reference numeral 209 denotes a control line; 226, a reset signal from the computer unit 201 to the sub CPU 202;
27 is an interrupt signal.

In the portable electronic device configured as described above, when a request for communication processing by the wireless transmission / reception unit 203 occurs, the computer unit 201 switches to the control line 223.
Is reset, and the sub CPU 202 is connected to the control line 2
26 sets the reset state. Timekeeping (counter 21
6) When the control line 223 is released from the reset state, clocking is started, and when the timer (counter 216) finishes clocking (holding the ripple carrier out signal 220 from the counter 216), the holding means (latch circuit 217) starts counting. ) The electric field strength information of the carrier received by the wireless transmission / reception unit 203 is held. Then, when the control means (computer unit 201) finishes measuring the time of the timer means (counter 216) (interrupt signal 227
The system startup state of the computer unit (sub CPU 202) that is inactive on the basis of the
6 is released from the reset state and restarted, the computer unit (in this embodiment, the sub CPU
The wireless transmission / reception unit 203 searches for a channel that is less than or equal to a specified electric field strength that can be stably used without being affected by high-frequency noise generated by the operation of 202), and enables communication to be performed on that channel.

FIG. 8 is a flowchart showing an example of a first wireless communication processing procedure in the portable electronic device according to the present invention. Note that (1) to (9) indicate each step.

First, when the power switch 211 is turned on, the computer unit 201 is reset by a reset signal transmitted from the power supply monitoring IC 206 via the computer unit reset line 207, and is transmitted via the sub CPU reset line 210. The sub CPU 202 is reset by the reset signal (1). Next, the computer unit 201 determines whether or not to start wireless communication (2). If NO, the computer unit 201 performs other processing (3) and returns to step (2).

On the other hand, if the determination in step (2) is YES, the wireless transmission / reception unit 203 receives all the channels one by one and searches for a channel having a predetermined electric field strength or less. (To be described later) (4). Next, it is determined whether or not there is an empty channel (5).
In the case of 01, "No communication is possible because there is no available channel" is displayed on the display (not shown) (6), and the process returns to step (2).

On the other hand, if the determination in step (5) is YES, an arbitrary empty channel, for example, a channel having the smallest number among the empty channels is selected (7). Next, communication is performed on the selected channel, that is, the computer unit 201
The sub CPU 202 performs communication for exchanging data with the wireless transmission / reception unit 203 (8), and determines whether or not data communication has been completed (9).
If YES, return to step (2); if NO, return to step (8).

Hereinafter, the carrier sense processing operation shown in FIG. 8 will be described with reference to the flowchart shown in FIG.

FIG. 9 is a flowchart showing an example of the detailed procedure of the carrier sense process shown in FIG. In addition,
(1) to (9) show each step.

First, the transmission / reception channel is set to “0” (1). At this stage, no channel setting is performed on the wireless transmitting / receiving unit 203. Next, the computer unit 201 sets a channel (N = N + 1) in the wireless transmission / reception unit 203 via the sub CPU 202 (2). Next, the sub CPU 202 is reset (3), and the reset line 223 of the counter 216 is released (4). Then, it waits until a predetermined time has elapsed until the counter 216 outputs the ripple carry out 220 (5), and when the ripple carry out 220 is output, the computer unit 2 is output via the interrupt line 227.
01 is detected, and the sub CPU 202 is reset.
To release from the reset state (6). Next, by the processing performed during the standby time in step (5), that is, when the input of the counter 216 (2 msec per cycle) is counted, for example, 15 times, the ripple carrier out signal 220 is output, and the A / D converter is output. 21
By the process in which the value of 8 is latched by the latch circuit 217,
The sub CPU 202 reads the latch data latched by the latch circuit 217 via the latch data output line 222 and the computer unit 2 via the control line 208.
Tell 01 (7).

Next, the reset line 223 is reset (8), and whether or not the signal intensities of all the channels have been read (N = 10, for example, when the number of channels N is 1 to 1)
10) is determined (9), and if YES, the process returns. If NO, the process returns to the step (2) to repeat the above process.

In the above embodiment, the wireless transmission / reception unit 203
For a certain period of time until the electric field strength output data of
By resetting the PU 202, the sub CPU 20
The case has been described in which the influence of noise that occurs with the execution of the processing by No. 2 is not given to the wireless transmission / reception unit 203.

(Embodiment 3) FIG. 10 is a block diagram showing a configuration of a portable electronic apparatus according to another embodiment of the present invention.

In the figure, reference numeral 251 denotes a computer unit, which has a built-in RAM 281 and the content of the RAM 281 is a backup battery 280 (comprising a lithium battery).
Is held by When the reset of the reset line 255 is released and the oscillator 25
7 is activated by a clock supplied via a clock line 299.

Reference numeral 254 denotes a battery, and a power switch 252
A constant power supply voltage is supplied to the circuit according to the ON / OFF state of the power supply. 253
Is a power supply monitoring IC that monitors the voltage applied to the computer unit 251 and sends a reset signal to the computer unit 251 via the reset line 255. Reference numeral 256 denotes a relay switch.
3 controls the ON / OFF. A frequency divider 258 divides a frequency of a clock supplied from the oscillator 257 via a clock line, and sends a frequency-divided clock having a predetermined frequency to the counter circuit 259. 260 is a latch circuit,
The A / D converter 261 performs A / D conversion on the received electric field strength detected by the wireless transmission / reception unit 262,
The received electric field strength is latched via the D converter output line 264. 263 is an antenna, 265 is an open collector inverter, and a resistor 278 having one end grounded.
Is connected to the flip-flop 2 depending on the state of the reset control signal input through the reset control signal line 275 to which the flip-flop 2 is connected.
A reset signal is sent to 70. A reset line 274 outputs a reset signal output from the open collector inverter 265 to the flip-flop 270.
Reset line 274 is pulled up by resistor 266.

267 is an open collector inverter,
A reset signal is sent to the counter 259 according to the state of a control signal input via a reset control signal line 279 to which a resistor 269 having one end grounded is connected. A resistor 268 pulls up the potential of the counter input line. Reference numeral 282 denotes a substrate, which is a power supply V _DD from the power supply line 271.
The components to be mounted are driven. Reference numeral 272 denotes a ground line, one end of which is connected to the ground line GND of the substrate 282. Reference numeral 276 denotes a latch data line which transfers the received electric field intensity latched by the latch circuit 260 to the computer unit 251. 277 is a communication line.

FIG. 11 is a flowchart showing an example of the second wireless communication processing means in the portable electronic device according to the present invention. Note that (1) to (9) indicate each step.

First, when the power switch 52 is turned on,
The initial state of the reset control signal lines 279 and 275 is “LO
W ”, the counter 259 carries out, for example, after 30 msec has elapsed, the flip-flop 270 sets the output Q to“ HIGH ”, the relay drive circuit 273 turns on the relay switch 256, and the computer unit 251 uses the reset line 255 After the reset, the reset control signal 279 is set to “HIGH”,
Subsequently, an initialization process is performed (1).

Next, it is determined whether or not the computer unit 251 has started wireless communication (2). If NO, the computer unit 251 executes other processing (3),
Return to step (2).

On the other hand, if the determination in step (2) is YES, the radio transmission / reception unit 262 receives all the channels one by one and searches for a channel having a predetermined electric field strength or less (the details will be described later). (4). Next, it is determined whether or not there is an empty channel (5).
Displays "Could not communicate because there was no available channel" on a display unit (not shown) (6), and returns to step (2).

On the other hand, if the determination in step (5) is YES, an arbitrary empty channel, for example, a channel having the smallest number among the empty channels is selected (7). Next, on the selected channel, communication, that is, the computer unit 251 performs communication involving data conversion for exchanging data with the wireless transmission / reception unit 262 via the communication line 277 (8), and determines whether data communication is completed. (9), YE
If S, return to step (2); if NO, return to step (8).

Hereinafter, the carrier sensing processing operation shown in FIG. 11 will be described with reference to the flowchart shown in FIG.

FIG. 12 is a flowchart showing an example of the detailed procedure of the carrier sensing process shown in FIG. (1) to (8) indicate each step.

First, the transmission / reception channel setting data is set to "0" (1). At this stage, the channel has not been set in the wireless transmission / reception unit 262. Next, the computer unit 251 is connected to the wireless transmission / reception unit 262.
The channel (N = N + 1) is set to (2). Next, the reset control signal 279 is set to “LOW”, and then the reset control line 275 is set to “HIGH” (4). As a result, the flip-flop 270 is reset, the output Q becomes “LOW”, and the relay driving circuit 2
73 is turned off, and the power supply of the computer unit 251 is turned off. Therefore, 275 and 279 become “LOW”.

Next, it waits until a predetermined time elapses until the counter 259 outputs the ripple carry out (5). For example, when the counter 259 outputs the ripple carry out after the elapse of 30 msec, the Q output of the flip-flop 270 becomes “HIGH”, the relay drive circuit 273 becomes “ON”, and the computer unit 251 is turned on. However, even if the computer unit 251 is powered on, the reset control signal lines 275 and 279
Because nothing is output, the resistance of 269 and 278
It remains in the “LOW” state.

Next, the computer unit 251
Referring to the backed up RAM 281, it recognizes that the carrier sense value is set on the latch data line 276 (6). (It turns out that the power is turned off for the carrier sensing process according to the flag state of the RAM 281, and it is reset and activated by the reset line 255.) Then, the latch data latched by the latch circuit 260 is read via the latch data line 276. , The electric field strength of the receiving channel is recognized (7). Next, whether or not the signal intensities of all the channels have been read is N = 10 (for example, the number of channels N is 1 to 1).
10) is determined (8), and if YES, the process returns. If NO, the process returns to the step (2) to repeat the above process.

(Embodiment 4) FIG. 13 is a flowchart showing another embodiment of the present invention. The block diagram and the main flowchart are the same as in FIGS. 7 and 8 of the third embodiment.

Hereinafter, the carrier sense processing operation shown in FIG. 2 will be described with reference to the flowchart shown in FIG.

FIG. 13 is a flowchart showing an example of a detailed procedure of the carrier sensing process shown in FIG. Note that (1) to (9) indicate each step.

First, the transmission / reception channel setting is set to "0" (1). At this stage, no channel setting is performed on the wireless transmitting / receiving unit 203. Next, the computer unit 201 sets a channel (N = N + 1) in the wireless transmission / reception unit 203 via the sub CPU 202 (2). Next, the reset line 22 of the counter 216
Release 3 (3). Execute the halt instruction and enter the halt state (4). Next, it waits until a predetermined time elapses until the counter 216 outputs the ripple carry out 220 (5), and when the ripple carry out 220 is output, the computer unit 201 is released from the halt state by the interrupt line 227 ( 6). Next, by the processing performed during the standby time in step (5),
That is, the input of the counter 216 (one cycle of 2 msec) is counted. For example, after counting 15 times, the ripple carrier out signal 220 is output, and the A / D converter 2
The latch data latched by the latch circuit 217 is transferred to the sub CPU 202 via the latch data output line 222 by the process of latching the value of 18 into the latch circuit 217.
Is read and transmitted to the computer unit 201 via the control line 208 (7).

Next, the reset line 223 is reset (8), and whether or not the signal intensities of all the channels have been read (N = 10, for example, when the number of channels N is 1 to 1)
10) is determined (9), and if YES, the process returns. If NO, the process returns to the step (2) to repeat the above processing.

In the above embodiment, the wireless transmission / reception unit 203
The case where the computer unit 201 is halted for a certain period of time until the electric field intensity output data is held so as to prevent the influence of noise generated due to the execution of processing by the computer unit 201 from being applied to the wireless transmission / reception unit 203 has been described. Things.

(Embodiment 5) FIG. 14 shows Embodiment 4 of the present invention.
It is a flowchart which shows. The block diagram and the main flowchart are the same as those in FIGS. 7 and 8 of the first embodiment.

Hereinafter, the carrier sense processing operation shown in FIG. 2 will be described with reference to the flowchart shown in FIG.

FIG. 14 is a flowchart showing an example of the detailed procedure of the carrier sense process shown in FIG. Note that (1) to (11) indicate each step.

First, the transmission / reception channel is set to “0” (1). At this stage, no channel setting is performed on the wireless transmitting / receiving unit 203. Next, the computer unit 201 sets a channel (N = N + 1) in the wireless transmission / reception unit 203 via the sub CPU 202 (2). Next, the computer unit 201 puts the sub CPU 202 in the halt state (3),
The 16 reset lines 223 are released (4), and the computer unit 201 is put in a halt state (5).
Next, the counter 216 sets the ripple carrier out 220
(6) until the predetermined time has passed until the ripple carrier out 220 is output.
Computer unit 201 at interrupt line 227
Releases its own halt state (7). Next, the computer unit 201 releases the sub CPU 202 from the halt state (8). Next, according to the processing performed during the standby time of the above step (6), that is, the counter 2
After counting 16 inputs (one cycle of 2 msec), for example, counting 15 times, the ripple carrier out signal 22
0 is output, and the value of the A / D converter 218 is latched by the latch circuit 217.
The sub-CPU 202 reads the latch data latched by 7 through the latch data output line 222 and transmits it to the computer unit 201 through the control line 208 (9).

Next, the reset line 223 is reset (10), and it is determined whether or not the signal intensities of all the channels have been read (N = 10, for example, when the number of channels N is 1 to 10) (11). If NO, return to step (2) and repeat the above processing.

In the above embodiment, the wireless transmission / reception unit 20
3 by holding the computer unit 201 and the sub CPU 202 for a certain period of time until the electric field strength output data of FIG.
This is a description of a case in which the influence of noise generated as a result of the processing performed by U202 is not applied to the wireless transmission / reception unit 203.

(Embodiment 6) FIG. 15 is a block diagram illustrating a configuration of a portable electronic device according to an embodiment of the present invention.

In the figure, reference numeral 301 denotes a computer unit, which is a keyboard for inputting information, instructions, etc., a display device for displaying input information, processing results, etc., a memory for storing data, processing procedures shown in flowcharts to be described later, and the like. It has processing means for processing data according to the stored processing procedure, a communication interface for communicating information processed in the processing procedure to the outside, and the like. The computer unit 301 is connected to the sub CPU 3 via a control line 308.
02, the sub CPU 302 stores data and a program for executing a processing procedure shown in a flowchart described later, processing means for processing data according to the program stored in the memory, and information processed by the processing procedure. It has a communication interface for external communication. It communicates with the computer unit 301 to transmit information. The computer unit 301 is activated by the clock supplied from the oscillation circuit 314 via the clock line 312 when the reset signal 307 is released. The clock supplied from the oscillation circuit 314 via the clock line 312 is frequency-divided by the frequency-dividing circuit 315 and, for example, at a period of 2 m via the low-pass filter 319.
The output 313 after the frequency division of sec is output to the counter 316.

Reference numeral 303 denotes a wireless transmission / reception unit which communicates with an external device (not shown) via an antenna 304. The reception electric field strength detected by the wireless transmission / reception unit 303 is A
After being A / D converted by the / D converter 318, the signal is latched by the latch circuit 317 via the A / D converter output line 325. When storing the received electric field strength of a plurality of channels, the latch circuit 317 may be a fast-in / fast-out type memory or an addressing type latch circuit. A battery 305 supplies a power supply voltage corresponding to the on / off state of the power switch 311.

Reference numeral 306 denotes a power supply monitoring IC which is a battery 305.
, And sends a reset signal to the computer unit 301 and the AND gate 324 via the computer reset line 307. The AND gate 324 outputs the reset signal and the computer unit 30.
A reset signal is sent to the sub CPU 302 via the sub CPU reset line 310 based on the output state from the sub CPU 302. 320 is a ripple carry out of the counter 316, 321 is a signal strength detection line, 322 is a latch data output line, and outputs the electric field strength data latched by the latch circuit 317 to the sub CPU 302. 3
23 is a reset line, which is a computer unit 301.
Is transferred to the counter 316.
309 is a control line, 326 is a reset signal from the computer unit 301 to the sub CPU 302, 3
27 is an interrupt signal.

In the portable electronic device configured as described above, when a request for communication processing by the wireless transmission / reception unit 303 occurs, the computer unit 301 controls the control line 323.
Is released and the sub CPU 302 is connected to the control line 3
26 sets the reset state. Timekeeping (counter 31
6) Timing is started when the control line 323 is released from the reset state, and the holding means (latch circuit 317) is turned on by the ripple carrier out signal 320 from the counter 316 when the counting of the timer means (counter 316) is completed. ) The wireless transmission / reception unit 303 holds the electric field strength information of the carrier received. Then, when the control means (computer unit 301) finishes measuring the time of the timer means (counter 316) (the interrupt signal 327 from the counter 316).
The system startup state of the suspended computer unit (sub CPU 302) is
6 is released from the reset state and restarted, the computer unit (in this embodiment, the sub CPU
The wireless transmission / reception unit 303 searches for a channel that is less than or equal to a specified electric field strength that can be stably used without being affected by high-frequency noise generated by the operation 302), and enables communication to be performed on that channel.

FIG. 16 is a flowchart showing an example of a first wireless communication processing procedure in the portable electronic device according to the present invention. Note that (1) to (9) indicate each step.

First, when the power switch 311 is turned on, the computer unit 301 is reset by a reset signal sent from the power monitoring IC 306 via the computer unit reset line 307, and also sent via the reset line 310 of the sub CPU 302. The sub CPU 302 is reset by the reset signal (1). Next, the computer unit 301
Determines whether wireless communication has started (2), and if NO, the computer unit 301 performs other processing (3) and returns to step 2.

On the other hand, if the determination in step (2) is YES, the radio transmission / reception unit 303 receives all the channels one by one and searches for a channel having a predetermined electric field strength or less. (To be described later) (4). Next, it is determined whether there is an empty channel (5).
In the case of 01, "No communication is possible because there is no available channel" is displayed on the display (not shown) (6), and the process returns to step (2).

On the other hand, if the determination in step (5) is YES, an arbitrary empty channel, for example, a channel having the smallest channel number among the empty channels is selected (7). Next, communication is performed on the selected channel, that is, the computer unit 301
The sub CPU 302 performs communication for exchanging data with the wireless transmission / reception unit 303 (8), and determines whether data communication is completed (9),
If YES, return to step (2); if NO, return to step (8).

Hereinafter, the carrier sense processing operation shown in FIG. 16 will be described with reference to the flowchart shown in FIG.

FIG. 17 is a flowchart showing an example of the detailed procedure of the carrier sense process shown in FIG. Note that (1) to (9) indicate each step.

First, the transmission / reception channel setting is set to "0" (1). At this stage, no channel setting is performed on the wireless transmission / reception unit 303. Next, the computer unit 301 sets a channel (N = N + 1) in the wireless transmission / reception unit 303 via the sub CPU 302 (2). Next, the sub CPU 302 is reset (3), and the reset line 323 of the counter 316 is released (4). Then, it waits until a predetermined time elapses until the counter 316 outputs the ripple carry out 320 (5), and when the ripple carry out 320 is output, the computer unit 3 is output via the interrupt line 327.
01 is detected, and the sub CPU 302 is reset
To release from the reset state (6). Next, by the processing performed during the standby time in step (5), that is, when the input of the counter 316 (2 msec per cycle) is counted, for example, 15 times, the ripple carry-out signal 320 is output, and the A / D converter is output. 31
By the process in which the value of 8 is latched by the latch circuit 317,
The sub CPU 302 reads the latch data latched by the latch circuit 317 via the latch data output line 322 and the computer unit 3 via the control line 308.
Tell 01 (7).

Next, the reset line 323 is reset (8), and whether or not the signal intensities of all the channels have been read (N = 10, for example, when the number of channels N is 1)
Is determined (9), and if YES, the process returns. If NO, the process returns to the step (2) to repeat the above processing.

In the above embodiment, the wireless transmission / reception unit 303
For a certain period of time until the electric field strength output data of
By resetting the PU 302, the sub CPU 30
The case has been described in which the influence of noise generated due to the execution of the process 2 is not given to the wireless transmission / reception unit 303.

(Embodiment 7) FIG. 18 is a block diagram showing a configuration of a portable electronic apparatus according to another embodiment of the present invention.

In the figure, reference numeral 351 denotes a computer unit which has a built-in RAM 381, and the contents of the RAM 381 are a backup battery 380 (made up of a lithium battery).
Is held by The reset of the reset line 355 of the computer unit 351 is released, and the computer unit 351 is activated by a clock transmitted inside the computer unit 351.

Reference numeral 354 denotes a battery, and a power switch 352
A constant power supply voltage is supplied to the circuit according to the ON / OFF state of the power supply. 353
A power supply monitoring IC monitors the voltage applied to the computer unit 351 and sends a reset signal to the computer unit 351 via a reset line 355. Reference numeral 356 denotes a relay switch.
3 controls the ON / OFF. Reference numeral 360 denotes a latch circuit, which performs A / D conversion on the received electric field intensity detected by the wireless transmission / reception unit 362 by the A / D converter 361, and latches the received electric field intensity via the A / D converter output line 364 as the received electric field intensity. 363 is an antenna, 365
Is an open collector inverter which sends out a reset signal to the flip-flop 370 according to the state of a reset control signal input via a reset control signal line 375 to which a resistor 378 having one end grounded. A reset line 374 outputs a reset signal output from the open collector inverter 365 to the flip-flop 370. The reset line 374 is pulled up by a resistor 366.

Reference numeral 367 denotes an open collector inverter.
A reset signal is transmitted to the counter 359 according to the state of a control signal input via a reset control signal line 379 to which a resistor 369 having one end grounded is connected. A resistor 368 pulls up the potential of the counter input line. Reference numeral 382 denotes a substrate, which is a power supply V from a power supply line 371.
_The chip component mounted by the _DD is driven. 372
Is a ground line, one end of which is connected to the ground line GND of the substrate 382. Reference numeral 376 denotes a latch data line which transfers the received electric field strength latched by the latch circuit 360 to the computer unit 351. Note that 37
7 is a communication line.

FIG. 19 is a flowchart showing an example of the second wireless communication processing means in the portable electronic device according to the present invention. Note that (1) to (9) indicate each step.

First, when the power switch 352 is turned on, since the reset control signal lines 379 and 375 are initially in the "LOW" state, the counter 359 is set to, for example, 30 ms.
After the elapse of ec, the carrier is out, and the flip-flop 370
After the output Q is set to “HIGH”, the relay drive circuit 373 turns on the relay switch 356, and the computer unit 351 resets the reset control signal 379 to “HIGH” after being reset by the reset line 355.
Then, an initialization process is performed (1).

Next, it is determined whether or not the computer unit 351 has started wireless communication (2). If NO, the computer unit 351 executes other processing (3),
Return to step (2).

On the other hand, if the determination in step (2) is YES, the radio transmission / reception unit 362 receives all the channels one by one and searches for a channel having a predetermined electric field strength or less (the details will be described later). (4). Next, it is determined whether or not there is an empty channel (5).
Displays "Could not communicate because there was no available channel" on a display unit (not shown) (6), and returns to step (2).

On the other hand, if the determination in step (5) is YES, an arbitrary empty channel, for example, a channel having the smallest number among the empty channels is selected (7). Next, on the selected channel, communication, that is, the computer unit 351 performs communication involving data conversion for exchanging data with the wireless transmission / reception unit 362 via the communication line 377 (8), and determines whether or not data communication is completed. (9), YE
If S, return to step (2); if NO, return to step (8).

Hereinafter, the carrier sense processing operation shown in FIG. 19 will be described with reference to the flowchart shown in FIG.

FIG. 20 is a flowchart showing an example of the detailed procedure of the carrier sense process shown in FIG. (1) to (8) indicate each step.

First, the transmission / reception channel setting data is set to "0" (1). At this stage, a channel has not been set in the wireless transmission / reception unit 362. Next, the computer unit 351 is connected to the wireless transmission / reception unit 362.
The channel (N = N + 1) is set to (2). Next, the reset control signal 379 is set to “LOW”, and then the reset control line 375 is set to “HIGH” (4). As a result, the flip-flop 370 is reset, the output Q becomes “LOW”, and the relay drive circuit 3
73 is turned off, and the power supply of the computer unit 351 is turned off. Therefore, 375 and 379 become “LOW”.

Next, it waits until a predetermined time elapses until the counter 359 outputs the ripple carry out (5). For example, when the counter 359 outputs the ripple carry out after the elapse of 30 msec, the Q output of the flip-flop 370 becomes “HIGH”, the relay drive circuit 373 becomes “ON”, and the computer unit 351 turns on. However, even if the computer unit 351 is powered on, the reset control signal lines 375 and 379
Because nothing is output, the resistance of 369 and 378
It remains in the “LOW” state.

Next, the computer unit 351
Referring to the backed up RAM 381, it recognizes that the carrier sense value is set on the latch data line 376 (6). (It is known that the power is turned off for the carrier sensing process according to the flag state of the RAM 381, the reset is performed by the reset line 355, and the power is turned on.) Then, the latch data latched by the latch circuit 360 is read via the latch data line 376. , The electric field strength of the receiving channel is recognized (7). Next, whether or not the signal intensities of all the channels have been read is N = 10 (for example, the number of channels N is 1 to 1).
10) is determined (8), and if YES, the process returns. If NO, the process returns to the step (2) to repeat the above process.

(Embodiment 8) FIG. 21 is a flowchart showing an embodiment of the present invention. The block diagram and the main flowchart are the same as those in FIGS. 15 and 16 of the first embodiment.

Hereinafter, the carrier sense processing operation shown in FIG. 16 will be described with reference to the flowchart shown in FIG.

FIG. 21 is a flowchart showing an example of the detailed procedure of the carrier sense process shown in FIG. Note that (1) to (9) indicate each step.

First, the transmission / reception channel is set to “0” (1). At this stage, no channel setting is performed on the wireless transmission / reception unit 303. Next, the computer unit 301 sets a channel (N = N + 1) in the wireless transmission / reception unit 303 via the sub CPU 302 (2). Next, the reset line 32 of the counter 316
Release 3 (3). Execute the halt instruction and enter the halt state (4). Next, it waits until a predetermined time elapses until the counter 316 outputs the ripple carry out 320 (5), and when the ripple carry out 320 is output, the computer unit 301 is released from the halt state by the interrupt line 327 ( 6). Next, by the processing performed during the standby time in step (5),
That is, the input of the counter 316 (one cycle of 2 msec) is counted, and for example, after counting 15 times, the ripple carrier out signal 320 is output, and the A / D converter 3
The latch data latched by the latch circuit 317 is transferred to the sub CPU 302 via the latch data output line 322 by the process of latching the value of 18 into the latch circuit 317.
Is read and transmitted to the computer unit 301 via the control line 308 (7).

Next, the reset line 323 is reset (8), and the signal intensities of all the channels are read (N = 10, for example, when the number of channels N is 1).
Is determined (9), and if YES, the process returns. If NO, the process returns to the step (2) to repeat the above processing.

In the above embodiment, the wireless transmission / reception unit 303
The case where the computer unit 301 is halted for a certain period of time until the electric field intensity output data is held so that the influence of noise generated due to the execution of the process by the computer unit 301 is not given to the wireless transmission / reception unit 303 has been described. Things.

(Embodiment 9) FIG. 22 is a flowchart showing an embodiment of the present invention. The block diagram and the main flowchart are the same as those in FIGS. 15 and 16 of the first embodiment.

Hereinafter, the carrier sense processing operation shown in FIG. 16 will be described with reference to the flowchart shown in FIG.

FIG. 22 is a flowchart showing an example of a detailed procedure of the carrier sense processing shown in FIG. Note that (1) to (11) indicate each step.

First, the transmission / reception channel is set to “0” (1). At this stage, no channel setting is performed on the wireless transmitting / receiving unit 303. Next, the computer unit 301 sets a channel (N = N + 1) in the wireless transmission / reception unit 303 via the sub CPU 302 (2). Next, the computer unit 301 puts the sub CPU 302 into the halt state (3),
The 16 reset lines 323 are released (4), and the computer unit 301 also puts itself in the halt state (5). Then, it waits until a predetermined time elapses until the counter 316 outputs the ripple carry out 320 (6), and when the ripple carry out 320 is output, the computer unit 30 is output via the interrupt line 327.
1 releases its own halt state (7). Next, the computer unit 301 releases the sub CPU 302 from the halt state (8). Next, by the processing performed during the standby time in the above step (6), that is, by counting the input (one cycle of 2 msec) of the counter 316, for example, after counting 15 times, the ripple carrier out signal 3
20 is output, and the value of the A / D converter 318 is latched by the latch circuit 317.
The sub CPU 302 reads the latch data latched by the CPU 17 via the latch data output line 322 and transmits it to the computer unit 301 via the control line 308 (9).

Next, the reset line 323 is reset (10), and it is determined whether or not the signal intensities of all the channels have been read (N = 10, for example, when the number of channels N is 1 to 10) (11). If NO, return to step (2) and repeat the above processing.

In the above embodiment, the wireless transmission / reception unit 30
3 by holding the computer unit 301 and the sub CPU 302 for a certain period of time until the electric field strength output data of FIG.
This is a description of a case where the influence of noise generated during the processing performed by U302 is not given to the wireless transmission / reception unit 303.

[0128]

As described above, according to the present invention, when it becomes necessary to latch the electric field strength output data by the wireless transmission / reception unit, the control means sets the system state of the activated computer unit to the sleep state, and the timekeeping means Starts time counting until the carrier output of the wireless transmission / reception unit becomes stable when the system state of the computer unit is in a halt state, and the holding unit holds the electric field strength information of the carrier received by the wireless transmission / reception unit when the timer unit ends the time measurement. The control means switches the system state of the inactive computer unit to the active state based on the time-out state of the timer means, sets the system state to the active state, and restarts the computer unit. The wireless transmission / reception unit can stably search for an available channel without being affected by noise, and execute communication processing using that channel.

Further, the control means is configured to shut off the power supply to the computer unit and set the system state to the hibernate state, and to temporarily stop the generation of high-frequency noise to the computer unit. The wireless transmission / reception unit can stably search for the usable channel without being affected by high-frequency noise generated by the operation of the unit, and execute communication processing using the channel.

Further, the control means is configured to reset the computer unit to set the system state to the sleep state, and to temporarily suppress the occurrence of high-frequency noise in the computer unit, thereby starting the system of the computer unit. The radio transmission / reception unit stably searches for the usable channel by alleviating the influence of the accompanying high frequency noise, and executes communication processing using the channel.

Further, the control means is configured to set the computer unit in the halt state and set the system state to the sleep state, and to temporarily suppress the occurrence of high frequency noise in the computer unit, thereby starting the system of the computer unit. The wireless transmission / reception unit stably searches for an available channel by alleviating the influence of high-frequency noise generated with the above, and executes communication processing using that channel.

Therefore, the restriction on the arrangement relationship between the computer unit and the wireless transmission / reception unit is relaxed, and the burden on the computer unit for shielding is reduced.
In addition, there is an effect that a small device can be provided.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a portable electronic device according to an embodiment of the present invention.

FIG. 2 is a flowchart illustrating an example of a first wireless communication processing procedure in the portable electronic device according to the present invention.

FIG. 3 is a flowchart illustrating an example of a detailed procedure of a carrier sense process illustrated in FIG. 2;

FIG. 4 is a block diagram illustrating a configuration of a portable electronic device according to another embodiment of the present invention.

FIG. 5 is a flowchart illustrating an example of a second wireless communication processing procedure in the portable electronic device according to the present invention.

FIG. 6 is a flowchart illustrating an example of a detailed procedure of a carrier sense process illustrated in FIG. 5;

FIG. 7 is a block diagram illustrating a configuration of a portable electronic device according to another embodiment of the present invention.

FIG. 8 is a flowchart illustrating an example of first wireless communication processing means in the portable electronic device according to the present invention.

FIG. 9 is a flowchart illustrating an example of a detailed procedure of a carrier sense process illustrated in FIG. 8;

FIG. 10 is a block diagram illustrating a configuration of a portable electronic device according to another embodiment of the present invention.

FIG. 11 shows a second example of the portable electronic device according to the present invention.
6 is a flowchart illustrating an example of a wireless communication processing unit.

FIG. 12 is a flowchart illustrating an example of a detailed procedure of a carrier sense process illustrated in FIG. 11;

FIG. 13 is a flowchart illustrating another example of the detailed procedure of the carrier sense process illustrated in FIG. 8;

FIG. 14 is a flowchart illustrating another example of the detailed procedure of the carrier sensing process illustrated in FIG. 8;

FIG. 15 is a block diagram illustrating a configuration of a portable electronic device according to another embodiment of the present invention.

FIG. 16 shows a first example of the portable electronic device according to the present invention.
6 is a flowchart illustrating an example of a wireless communication processing unit.

17 is a flowchart illustrating an example of a detailed procedure of a carrier sense process illustrated in FIG. 16;

FIG. 18 is a block diagram illustrating a configuration of a portable electronic device according to another embodiment of the present invention.

FIG. 19 is a second view of the portable electronic device according to the present invention.
6 is a flowchart illustrating an example of a wireless communication processing unit.

FIG. 20 is a flowchart illustrating an example of a detailed procedure of a carrier sense process illustrated in FIG. 19;

FIG. 21 is a flowchart illustrating another example of the detailed procedure of the carrier sense process illustrated in FIG. 16;

FIG. 22 is a flowchart showing another example of the detailed procedure of the carrier sense process shown in FIG. 16;

[Explanation of symbols]

 1, 201, 301 Computer unit 2, 202, 302 Sub CPU 3, 203, 303 Wireless transmission / reception unit 4, 204, 304 Antenna 5, 205, 305 Battery 14, 214, 314 Oscillation circuit 16, 216, 316 Counter 17, 217 317 latch circuit

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G06F 1/26 G06F 11/00 H04B 1/10 H04B 7/26

Claims (7)

(57) [Claims] 1. An electronic device comprising: a wireless transmission / reception unit that performs wireless communication processing with an external device via an antenna; and a computer unit that processes desired information while synchronizing with a reference clock. Set control means for setting, timer means for measuring a signal reception time of the wireless transmission / reception unit according to the operation of the setting means, holding means for holding electric field strength information of the carrier received by the wireless transmission / reception unit, An electronic device, comprising: restart control means for switching and setting a halt state of the computer unit to a start state based on a time-out state of the timer means. 2. The electronic apparatus according to claim 1, wherein the set control unit cuts off power supply to the computer unit and sets a system state to a sleep state. 3. The electronic device according to claim 1, wherein said set control means resets a computer unit to set a system state to a sleep state. 4. The electronic apparatus according to claim 1, wherein the set control means sets the system state to a sleep state by causing the computer unit itself to halt. 5. An electronic device comprising: a wireless transmitting / receiving unit for performing wireless communication processing with an external device via an antenna; and a computer unit for processing desired information while synchronizing with a reference clock, wherein the computer unit is in a halt state. Set control means for setting, timer means for measuring a signal reception time of the wireless transmission / reception unit according to the operation of the setting means, holding means for holding electric field strength information of the carrier received by the wireless transmission / reception unit, An electronic device, comprising: restart control means for switching and setting a halt state of the computer unit to a start state based on a time end state of the timer means. 6. An electronic device having a wireless transmission / reception unit for performing wireless communication processing with an external device via an antenna and a computer unit for processing desired information while synchronizing with a reference clock, wherein communication with the wireless transmission / reception unit is performed. A first computer unit that performs the operation, a set control unit that sets the first computer unit to a sleep state, a timer unit that measures a signal reception time of the wireless transmission / reception unit according to an operation of the set control unit, Holding means for holding the electric field strength information of the carrier received by the wireless transmission / reception unit; and switching the hibernation state of the first computer unit to an active state based on a time-out state of the timer means, thereby changing the first computer The electric field strength information stored in the storage means by the unit Electronic device characterized in that it has a re-start control means for setting the computer unit. 7. An electronic device comprising: a wireless transmitting / receiving unit for performing wireless communication processing with an external device via an antenna; and a computer unit for processing desired information while synchronizing with a reference clock. A first computer unit to be executed; a set control unit for setting the computer unit and the first computer unit to a sleep state; and a signal reception time of the wireless transmission / reception unit is measured according to an operation of the set control unit. Timer means; holding means for holding the electric field strength information of the carrier received by the wireless transmission / reception unit; activation state of the halt state of the computer unit and the first computer unit based on the time-out state of the timer means And the first computer unit is switched to Electronic device characterized in that it has a, a restart control means for setting the field strength information stored in the more said storage means to said computer unit.