JP3033718B2 - Wireless portable device with display function - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio portable device with a display function including a radio selective call receiver with a display function, and more particularly to a radio portable device with a display function with an improved method for storing and displaying received information errors.

[0002]

2. Description of the Related Art As shown in Japanese Patent Application Laid-Open No. 4-302231 (title of the invention: radio selective call receiver with display function), this type of conventional wireless portable device with display function is a signal which cannot be corrected. When a (message) block is received, the error message and the flag information indicating that there is an error are stored in the storage unit, and when a message is displayed, only the error message portion is indicated by a symbol indicating that there is an error. The error message was displayed alternately and periodically.

[0003]

In the disclosed radio selective call receiver with a display function, that is, in the radio portable device with a display function, error correction of a demodulated digital signal is performed for each signal block. If there is an error in a signal block, an error flag is added to the signal block, and the signal block is stored in the storage unit as message information with the error, so that the memory of the storage unit is wasted.

Further, the disclosed radio selective call receiver with a display function has a drawback in that an error message is displayed to cause a carrier to guess misleading contents.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to eliminate the drawbacks of the disclosed technology, to make efficient use of the memory of the storage unit, and to provide a radio display with a display function for displaying a message that does not cause misunderstanding to a carrier. A portable device is provided.

[0006]

SUMMARY OF THE INVENTION A wireless portable device with a display function according to the present invention receives and demodulates a call number signal including a synchronization signal and a radio modulation signal including a message signal following the synchronization number signal to generate a demodulated digital signal. And a decoder for correcting the error of the demodulated digital signal and detecting a pre-registered own call number signal from the error-corrected demodulated digital signal, and storing the corrected message signal as message information in a storage unit. And a message display means for displaying the stored message information on a display unit, wherein the message signal includes an information bit section in which the message information is a part of the message information and an error correction function of the message bit. And a check bit section to be used as a message block. A decoder for performing error correction on the demodulated digital signal; a block error holding unit for holding an error in the message block after the error correction; and an information bit for holding an error in the information bit section after the error correction. A section error holding unit, and an information bit section held by the message block error holding unit, when the message block held by the message block error holding unit is free of error, If there is an error in the message, a message conversion buffer is used as one of the special characters for the message information.

[0007] One of the wireless portable devices with a display function is:
The decoder further includes check bit section error holding means for holding an error in the check bit section after error correction, and the message conversion buffer has an error in the message block and the check bit section error holding means. In the case where there is an error in the check bit section held by, the message block to which error information is added can be used as the message information.

The wireless portable device with a display function further has a notifying section for notifying by driving by the decoder when the own calling number signal is detected and subsequent message information is stored in the storage section. be able to.

In another one of the wireless portable devices with a display function, the display unit illuminates and displays the error-free message information and the message information converted into one character of a special character, and displays the error information. The added message information may be displayed in a blinking manner.

[0010] The wireless portable device with a display function can be configured such that the special character is a character font.

[0011] In the wireless portable device with a display function according to the present invention, when there is an error in the information bit section in the message block, the error message is exchanged with one character of the special character and the information is stored in the storage unit. For this reason, the memory capacity for storing error messages stored in the storage unit is reduced,
The memory capacity allocated to other messages increases, and the memory can be used efficiently.

In addition, by displaying one special character in the error message, it is possible to eliminate a display that is misleading by the carrier.

[0013] Further, when the error message is displayed, the display which causes the wearer to misunderstand can be eliminated by making the display light on or blinking as described above.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of a wireless portable device with a display function according to the present invention. FIG. 2 is a diagram showing a format example of a message signal handled by the wireless portable device.

The radio portable apparatus with a display function shown in FIG. 1 is a kind of radio selective call receiver, and receives a radio modulation signal from a base station of a paging system to an antenna 1. The radio modulation signal includes a preamble signal, a call number signal including a synchronization signal, and a message signal following the call number signal.

FIG. 2 shows a part of a message signal which is a part of a modulation signal (data) of the radio modulation signal. A block of a message signal (message block) includes an information bit section representing message information and a check bit section for correcting a code error of the information bit. The check bit section is a BCH check bit generated based on the information bits in the information bit section. The calling number signal also has this format.

Referring again to FIG. 1, the radio section 2 demodulates the radio modulation signal received by the antenna 1 to generate a demodulated digital signal, and sends the demodulated digital signal to the decoder 3.
The decoder 3 can be constituted by a G / A or a dedicated IC. The decoder 3 receives the demodulated digital signal, decodes the error correction code, detects its own calling number signal, and temporarily holds the message signal. The control unit 4 including the CPU performs various controls of the wireless portable device according to the execution program stored in the ROM of the storage unit 5, for example, the storage unit 6
The setting of the message information stored in the display driver 8 is performed. The storage unit 6 is a RAM or a 2-port RA
M can be used to store the message information received from the decoder 3. The storage unit 7 using the EE-ROM is
The own call number and various parameters for operating the wireless portable device are stored in advance.

This wireless portable device recognizes that the call number signal received by decoder 3 matches its own call number stored in storage unit 7 and stores subsequent message information in storage unit 6. Then, the control unit 4 sets notification control to the decoder 3, and the decoder 3 outputs a notification signal to drive the driver 10, and the driver 10 has a call by emitting light of the LED 11 as a notification device and sounding of the speaker 12. This is notified to the person carrying this wireless portable device. Further, the control unit 4 receives the message information from the decoder 3 or the storage unit 6 and drives the display driver 8 to display the message on the liquid crystal display of the display unit 9. The wireless portable device includes a switch unit 13 such as a power switch and a reset switch, a clock generator for generating a reference clock (not shown), a power supply circuit, a battery, and the like.

The decoder 3 holds error information of the entire message block, error information of the information bit section of the message block, and error information of the check bit section of the message block. On the other hand, if the message held by the block error holding unit 36 of the decoder 3 has no error, the message is stored in the storage unit 6 through the message conversion buffer 39 as normal message information.

Here, the decoder 3 has a function of correcting an error of the demodulated digital signal. When the decoder 3 detects a synchronization signal from the demodulated digital signal, the decoder 3 shifts to a call permission state, and performs N (N is 2 or more, for example, 2) bit error correction on the demodulated digital signal. In other words, the decoder 3 compares its own calling number called in advance from the storage unit 6 with the calling number signal having the N-bit error corrected, and if the two match, it is determined whether or not a message signal is accompanied. Is determined. If no message signal is involved, the decoder 3 holds only the calling number in the built-in message conversion buffer 39. When a message signal is accompanied, the decoder 3 holds the message signal with the N-bit error corrected together with the calling number in the message conversion buffer 39 as message information.

Next, the function and operation of the decoder 3 will be described in detail. The demodulated digital signal from the radio unit 2 is supplied to the synchronization signal detection unit 31 and the error correction unit 33 in parallel. Upon detecting a synchronization signal from the demodulated digital signal, the synchronization signal detection unit 31 shifts the synchronization switching unit 32 to the call permission state and causes the error correction unit 33 to perform N-bit error correction of the demodulated digital signal for each message block. .

The self-calling number detecting section 34 compares the demodulated digital signal (calling number signal) from the error correcting section 33 with an error-corrected signal and its own calling number registered in the storage section 6 in the call permission state. I do. When the own calling number is detected from the demodulated digital signal, the self calling number detecting unit 34
Causes the message capturing unit 35 to capture the error-corrected message signal following the own calling number signal.

At the same time, the message fetching section 35 of the decoder 3 outputs the error state of each message block to the block error holding section 36, the information section error in the message block to the information bit section error holding section 37, and the message block The error of the check bit section is held in the check bit section error holding unit 38, respectively. The message conversion buffer 39 converts the message fetched by the message fetching unit 35 into message information according to the state of the block error holding unit 36, the information bit section error holding unit 37, and the check bit section error holding unit 38. For example, if the error of the message block held by the block error holding unit 36 is N or less, the message conversion buffer 39 stores the message block in the storage unit 6 as normal message information.

On the other hand, if the error of the message block held by the block error holding section 36 exceeds N and the information bit section error holding section 37 holds the error of the information bit, the message conversion buffer 39 is erroneous. The information bits are converted into one special character and stored in the storage unit 6.
If the error of the message block exceeds N and the check bit error holding unit 38 holds the check bit error, the message conversion buffer 39
Stores the message information to which the error flag is added in the storage unit 6.

When displaying the message information stored in the storage unit 6, the control unit 4 sets the message information stored in the storage unit 6 in the display driver 8. Then, the display driver 8 causes the display unit 9 in correspondence with the character fonts which incorporates the message information. Further, the control unit 4 lights up the normal message information and the message information converted into one character of the special character, and blinks the message information added with the error flag.

FIG. 3 is an operation flowchart of the wireless portable device with a display function shown in FIG.

Referring to FIG. 1 and FIG. 3, when the antenna 1 receives the radio modulation signal in the standby state (step 1), it demodulates from the radio unit 2 to the synchronization signal detection unit 31 and the error correction unit 33 of the decoder 3. A digital signal is provided. When the synchronization signal detection unit 31 detects a synchronization signal from the demodulated digital signal, the synchronization switching unit 32 shifts to a call permission state and transmits this to the self-call number detection unit 34, and the error correction unit 33 corrects the error of the demodulated digital signal. Here, for example, N = 2-bit error correction is performed, and
Etc.

When the self-call number detecting section 34 detects the call number stored in the storage section 7 from the error-corrected demodulated digital signal (YES in step 2), a message signal is added to the demodulated digital signal. Is determined (step 3). If no message signal is added (NO in step 3), the message conversion buffer 39 stores only the received call number in the storage unit 6 (step 12).

If it is determined in step 3 that a message signal has been added (YES in step 3), the self-calling number detector 34 temporarily stores the error-corrected message signal in the message receiver 35. And the message capturing unit 35 causes the block error holding unit 36 to hold the error state of the message block (the bit error is set to an error state of (N + 1) or more) (step 4). At the same time, the message capturing unit 35
Causes the information bit section error holding section 37 to hold the error state of the information bit section of the message block, and causes the check bit section error holding section 38 to hold the error state of the check bit section of the message block (step 4).

There is an error in the message block in the block error holding unit 36 corresponding to the message signal held in the message fetching unit 35 (YE in step 5).
S), and if there is an error in the information bit section (YES in step 6), the message conversion buffer 39 stores this information bit in one character of a special character, for example, ＄ of a character font or * of a character font. The message information is converted into one character and stored in the storage unit 6 (step 7).

The data stored in the block error section 36 is
There is an error in the message block corresponding to the message block held in the message fetching unit 35 (YES in step 5), no error in the information bit section (NO in step 6), and a check bit section error holding unit 38, if there is an error in the check bit section (YES in step 9), the message conversion buffer 3
In step 9, the message block stored in the message capturing unit 35 is stored in the storage unit 6 as message information with an error flag (step 10).

Further, the message conversion buffer 39
If there is no error in the message block held in the block error unit 36 (NO in step 5), that is, if there is no error in both the information bit section and the check bit section (NO in step 6 and NO in step 9), The message block of the message signal held in the message capturing unit 35 is stored in the storage unit 6 as normal message information (step 11).

When a series of all the messages are stored in the storage unit 6 from the decoder 3 (step 8), the control unit 4
Reads out the message information stored in the storage unit 6,
A message is set in accordance with the character font of the display driver 8 and displayed on the display unit 9 (step 1).
3).

At this time, the message information portion converted into the special character is lit and displayed as one character of the special character, for example, with a character font of ＄ or *. The message information portion to which the error flag is added blinks, and the normal message information portion having no error is lit.
Further, for the message in which only the call number is stored, for example, the control of the lighting display of “Tone Only” is performed by the control of the control unit 4.

During the display of the call number and the message in step 13, for example, when the reset switch of the switch section 13 is pressed or a factor for turning off the display of the timeout by the timer (not shown) occurs (step 14).
The control unit 4 turns off the display on the display unit 9 via the display driver 8 (step 15), and the wireless portable device with a display function returns to the standby state (step 1).

[0037]

As described above, according to the present invention, when there is an error in an information bit section in a message block, this message block (message information) is converted into a special character and stored in a (message) storage unit. Since the storage is performed, the storage capacity of the error message information can be reduced, and the capacity allocated to other message information is increased.

Further, if the message information converted into one character of the special character is illuminated and displayed, it is possible to avoid a display that is easily misunderstood by the wearer.

Further, when an error occurs only in the check bit section, the message information is displayed in a blinking manner, so that a warning that the error is included in the message block is given to the wearer.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a wireless portable device with a display function according to the present invention.

FIG. 2 is a diagram showing a format example of a message signal handled by the wireless portable device.

FIG. 3 is an operation flowchart of the wireless portable device with a display function of FIG. 1;

[Explanation of symbols]

 Reference Signs List 1 antenna 2 radio unit 3 decoder 4 control unit 5-7 storage unit 8 display driver 9 display unit 10 driver 11 LED 12 speaker 13 switch unit 31 synchronization signal detection unit 32 synchronization switching unit 33 error correction unit 34 self-call number detection unit 35 Message capturing section 36 Block error holding section 37 Information bit section holding section 38 Check bit section holding section 39 Message conversion buffer

Claims (5)

(57) [Claims] 1. A radio unit for receiving and demodulating a call number signal including a synchronization signal and a radio modulation signal including a message signal subsequent thereto to generate a demodulated digital signal, and performing error correction and error correction on the demodulated digital signal. Upon detecting a pre-registered calling number signal from the demodulated digital signal, a decoder for storing the corrected message signal as message information in a storage unit, and a message for displaying the stored message information on a display unit in the display function wireless handheld device having a display means, and a check bit section of the message signal is responsible for the error correction function part in which information bit section and the message bit of the message information as a message block, the decoder Is an error for performing error correction of the demodulated digital signal. Correct means, block error holding means for holding an error in the message block after error correction, information bit section error holding means for holding an error in the information bit section after error correction, and message block error holding means. If there is no error in the message block to be held, the message block is replaced by a special character if the message block contains an error and the information bit section held by the information bit section error holding means contains an error. And a message conversion buffer for the message information. 2. The apparatus according to claim 1, wherein the decoder further comprises a check bit section error holding unit for holding an error in the check bit section after error correction, wherein the message conversion buffer has an error in the message block, and 2. The wireless portable device with a display function according to claim 1, wherein when there is an error in the check bit section held by the bit section error holding means, the message block to which error information is added is used as the message information. 3. The information processing apparatus according to claim 2, further comprising a notifying unit for notifying by driving the decoder when the own call number signal is detected and subsequent message information is stored in the storage unit. Wireless portable device with display function. 4. The display section lights up the message information having no error and the message information converted into one character of a special character, and blinks the message information to which error information is added. The wireless portable device with a display function according to claim 1, wherein: 5. The wireless portable device with a display function according to claim 4, wherein the special character is a character font.