JPH02146828A - Radio selective call receiver - Google Patents

Abstract

PURPOSE:To transfer a message abounding in information contents without increasing the transmission time and to allow the title receiver to cope with a message flexibly by including an undefined part to a routine text and allowing the receiver to detect them and to attain character substitution. CONSTITUTION:When a 1st character such as an ID received by a reception section 2 is coincident, a comparator section 3 extracts a 2nd character string in succession to the 1st character string and keeps comparison till a routine text in a routine text storage section 6 referenced by a character substitute section 5 and a 2nd character string are coincident. When an undefined part is included in the 2nd character string, the comparison section 3 compares a 3rd character string in succession to the 2nd character string and when the character substitute is finished, a substitute end signal is fed from the substitute section 5 to the comparison section 3 and a character to be substituted is stored in a RAM 4.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a radio selective calling receiver with a character display function.

(Prior art) A wireless selective calling system allows a person who is out or away from their seat to carry a small portable receiver, and wirelessly alerts a person with a ringing tone equivalent to the ringing of a telephone, and calls the nearest telephone. It was developed with the aim of encouraging responses from people. As portable receivers became smaller and more sophisticated, and wireless paging signaling systems were developed, wireless selective calling systems became capable of not only paging services but also character transmission services such as numbers, kana, and alphabets. It is well known that

The radio selective call receiver to which the present invention is directed is a portable receiver used in a radio selective call system that can also provide text transmission services, and conventional text transmission methods include the following two methods. The first method is to wirelessly transmit the message string as it is. Second, if you prepare multiple pairs of sentence examples (fixed sentences) and strings of characters (for PA, combinations of numbers) that indicate them, and send the strings wirelessly, the fixed sentences corresponding to the strings will be displayed. This is the method.

(Problems to be Solved by the Invention) However, the conventional character transmission method described above has the following problems.

The first method has the advantage of being able to convey any message, but alphanumeric characters and katakana require 8 bits per character;
Furthermore, since each character of Kanji and Hiragana requires 12 bits, the transmission time increases in proportion to the number of characters. Therefore, in reality, certain restrictions are imposed on the message length that can be transmitted, making it difficult to convey the intended message content.

The second method aims to shorten the transmission time, which is a drawback of the first method, but since it uses pre-prepared example sentences, it is difficult to convey the intended message content.

The present invention was made in view of these problems, and its purpose is to provide a wireless selective calling system that enables the horizontal construction of a wireless selective calling system that can transmit the intended message content without increasing the transmission time. The purpose is to provide a call receiver.

(Means for Solving the Problems) In order to achieve the above object, the radio selective call receiver of the present invention has the following configuration.

That is, in the wireless selective calling receiver of the first invention, a calling signal that is wirelessly transmitted in a wireless selective calling system includes a predetermined first character string and a predetermined first character string that is followed by the first character string. a second character string corresponding to a predetermined fixed form sentence; and a third character string forming the contents of an undefined character string; The wireless selective calling receiver that receives the calling signal wirelessly and displays the characters, selects the first character string from among the received character strings. Detecting a character string and extracting the second character string following it from the received character string and outputting it, and when there is no notification of completion of replacement thereafter, the third character string following the second character string. a comparison means for at least extracting and outputting a received character string from a received character string; a fixed phrase storage means in which a plurality of fixed phrases are stored in association with a second character string corresponding thereto; Upon receiving the second character string, a corresponding fixed phrase is read out from the fixed phrase storage means, and when the fixed phrase includes the undefined character string, the third string inputted from the comparing means is used to read out the fixed phrase corresponding thereto. Character replacement means for at least notifying the end of the replacement after replacing the defined character string;
It is characterized by having the following.

Further, in the wireless selective calling receiver of the second invention, the calling signal wirelessly transmitted in the wireless selective calling system includes a first character string corresponding to a predetermined fixed phrase and a fixed phrase corresponding to the first character string. A second character string that is appended to the first character string when it contains an undefined character string and specifies a fixed phrase to be selected as the content of the undefined character string. In this case, the wireless selective calling receiver that wirelessly receives the calling signal and displays characters includes a first storage means in which received character strings are stored; and a first character string corresponding to each of the plurality of fixed phrases. a second storage means in which a plurality of fixed phrases are respectively stored in association with a fixed sentence including an undefined character string; a received character string stored in the first storage means; a fixed-format sentence replacement means for detecting a first character string from the second storage means and replacing the fixed-format sentence corresponding to the detected first character string; When an undefined character string is included, a second character string following the detected first character string is detected from the received character string, and a fixed phrase specified by the detected second character string is 2. The present invention is characterized by comprising: fixed phrase replacement means for reading out from the storage means and replacing with an undefined character string; and;

(Function) Next, the function of the radio selective calling receiver of the present invention configured as described above will be explained.

In the first invention, if an undefined character string is included in the fixed phrase corresponding to the second character string extracted from the received character string, the undefined character string is replaced with a third character string. Create and display a completed sentence.

In addition, in the second invention, when the fixed phrase corresponding to the first character string extracted from the received character string includes an undefined character string, the fixed phrase specified by the second character string Replace undefined strings and create and display completed sentences.

In other words, by providing an undefined portion in the fixed phrase and allowing it to be replaced on the receiving side, even messages with a large amount of information, including kanji, etc., can be transmitted without increasing the transmission time. Furthermore, it is possible to construct a wireless selective calling system that can flexibly respond to any message.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

In the wireless selective calling system according to the first embodiment, a predetermined first character string, a second character string that follows the first character string and corresponds to a predetermined fixed phrase, When the fixed text corresponding to this second character string includes an undefined character, the second character string is followed by a third character string that is the content of the undefined character. A paging signal is transmitted wirelessly.

A device that receives such call signals wirelessly and displays characters.
li! For example, as shown in FIG.
An antenna 1, a receiving section 2, a comparing section 3, a RAM 4,
A character replacement section 5, a fixed phrase storage section 6, a display control section 7,
It basically consists of a display section 8.

The receiving unit 2 demodulates and decodes the calling signal received by the antenna 1, and if the identification numbers match, sends the subsequent received character string ct to the successive approximation unit 3.

The comparing unit 3 has a first character string (hereinafter referred to as the "designated character string") that is the same as that on the sending side, and compares it with the received character string d. If they do not match, the character string d2 is stored in the RAM 4. Sequentially transfer to If they match, the received character string a and the character string ds (second character string) that follows the specified character string are sequentially transferred to the character replacement unit 5, and in response, the character replacement unit 5 sends an end signal d5. If not, the following character string d3 (third
character string) is sequentially transferred to the character replacement unit 5. Then, upon receiving the end signal d5, the comparison operation between the received character string and the designated character string is restarted.

In the fixed phrase storage unit 6, a plurality of fixed phrases are stored in association with the corresponding second character strings. Normally, the second string is a string of fixed length consisting of a combination of numbers, etc. be.

When the character replacement section 5 receives the second character string, it reads out the corresponding fixed phrase from the fixed phrase storage section 6, and if the fixed phrase does not include an undefined character string, it replaces the fixed phrase. The completed sentence d4 is transferred to the RAM 4, and an end signal d is sent to the comparator 3. On the other hand, if the read fixed phrase contains an undefined character string, the end signal ct,
stop the occurrence of Then, the third character string is input from the comparison unit 3, so the undefined character string is replaced with the third character string to form a complete sentence d4, which is transferred to the RAM 4, and the end signal d5 is is sent to the comparison section 3.

The display control unit 7 reads the character string written in the RAM 4 as described above and displays it on the display unit 8.

The above is a general operation, but next, it will be specifically explained with reference to FIGS. 2 to 4. Figure 2 (a) is an example of a message with the same format and content as the conventional one, which does not include undefined character strings.
Figure (b) is an example of a message according to the present invention that includes an undefined character string.

The transmitted character string, that is, the received character string d, is shown in Fig. 2 (a) (1).
In this case, the operation of the comparison section 3 (FIG. 3) and the operation of the character replacement section 5 (FIG. 4) are as follows. First, the comparing unit 3 compares the received character string d1 received from the receiving unit 2 with the designated character string $$ (step 31), and the designated character string $$.
(step 32), r 03-236
Since the character string of -2222J does not include the specified character string $$, the determination in step 32 is negative (NO) and the process proceeds to step 34, where the determination is also negative (NO) and "03-236- The character string 2222° is written to the RAM 4.Then, since the next two characters $$ are the specified character string, the judgment in step 32 is affirmative (YES) and the process advances to step 36, where the next two characters $$ are written in the specified character string $$. The receiver extracts the character (second character string door 1) from the received character string d1, passes the character ' I J (d3) to the character replacement unit 5, and waits for input of the end signal d5 (step 37).

In the character replacement part 5, the receiver is a fixed phrase corresponding to the removed character "1" [Please call number ~, J (Figure 2 (a)
>(2)) is read from the fixed phrase storage unit 6 (step 41), and it is determined whether the fixed phrase includes an undefined character≠ (step 42).

This determination is made for each character from the first character to the last character of the fixed sentence (steps 43 and 44).

Note that the determination in step 32 is also performed character by character.

Since the fixed form sentence (Figure 2 (a) (2)) does not include the undefined character ≠, the determination at step 42 is negative (NO).
When the end of the fixed sentence is detected, the determination in step 43 becomes affirmative (YES) and the process proceeds to step 45, where the end signal d5 is issued to the comparing section 3. In the next step 46, the fixed sentence (second (a) (2)) is written into the RAM 4 as a completed sentence d4, and the operation is completed.

Further, in the comparison unit 3, the determination in step 37 is affirmative (YE
S) and returns to the previous step 31, writes the character string "Takahashi" after the character "1" to the RAM 4 (steps 32 → 34 → 35 → 31), and the end of the received character string is detected. Then, the determination at step 34 becomes affirmative (YES), and the comparing section 3 ends its operation. The message stored in the RAM 4 is read out by the display control unit 7,
It is displayed on the display section 8 (FIG. 2(a)(3)).

Next, when the received character string d1 is as shown in FIG. 2(b) (1), the operation is as follows. In the comparison unit 3, the received character string d
The first two characters of 1 are the specified characters $$, so step 3
The determination of 2 is affirmative (YES), and the next character "2" is passed to the character replacement section 5 in step 36, and the input of the end signal d5 is awaited (step 37).

In the character replacement part 5, the receiver replaces the fixed phrase "We have a visitor, please go to the reception immediately" (Fig. 2 (b) (2>)) corresponding to the character "2" Read from the storage unit 6 Step 41), Step 42→Step 43→
When an undefined character ≠ is detected by repeating steps 44 and 42, the determination in step 42 becomes affirmative (YES) and the process proceeds to step 47. Then, in the comparator 3, the end signal d is input. Therefore, the process proceeds from step 37 to step 38, passes the next character "3" after character r2J to character replacement unit 5, returns to step 37, and returns to step 37. In character replacement unit 5, step 47 is executed, and the first undefined Character “%J
is replaced with the character "3" and the test character is replaced with 1 in step 44.
The process is incremented by one and returns to step 42. As a result, the second undefined character "■" is replaced with the character "0", and the third undefined character "r%" is replaced with the character "1". Then, in step 43, the character r2. Fixed phrase corresponding to (second
When the end of the sentence in Figure (b) (2)) is detected, step 4
5 and 46, and the character replacement section 5 ends the operation. Further, the comparison unit 3 determines that the determination in step 37 is affirmative (
YES) and proceeds to step 31, but the received character string d,
has been completed, it is detected in step 34 and the comparison operation is ended. The message stored in the RAM 4 is read out by the display control section 7 and displayed on the display section 8 (FIG. 2(b) (3>>).

Next, a second embodiment of the present invention will be explained with reference to FIGS. When the fixed phrase corresponding to this first character string includes an undefined string, specify the fixed phrase that is to be appended to the first string and is selected as the content of the undefined string. A paging signal including a second character string is wirelessly transmitted.

For example, as shown in FIG. 5, a wireless selective calling receiver that wirelessly receives such a calling signal and displays characters includes an antenna 51, a receiving section 52, an ID detecting section 53, a buffer RAM 54, and a fixed-format Sentence replacement unit 55, fixed phrase/phrase storage unit 56, fixed phrase replacement unit 57, and message RAM 5
8, a display control section 59, and a display section 60.

First, the -a operation will be explained. The calling signal received by the antenna 51 is demodulated (and decoded) by the receiving section 52 and input to the ID detecting section 53 . The detection unit 53 detects an ID number (i.e., identification number) from the input calling signal, and if it matches the ID number of its own receiver, the message following that ID number is stored in the buffer RAM 54 as a received character string a. At the same time, a message replacement request is issued to the fixed phrase replacement unit 55.

Then, the fixed text replacement unit 55 sequentially reads the received character strings from the buffer RAM 54 from the beginning and searches for the presence or absence of the first character string. If the first character string exists, the corresponding fixed phrase is read out from the fixed phrase/phrase storage section 56 and replaced, stored in the message RAM 58, and an end notification C is issued to the fixed phrase replacement section 57. Furthermore, if the first character string does not exist, it is stored as is in the message RAM 58.

In addition, in the fixed phrase MtlJ section 57, the fixed phrase replacement section 55
Upon receiving the completion notification C from , the message RAM 58 is searched for the presence or absence of an undefined character string in the fixed text. If an undefined character string exists, the buffer RAM 54
A second character string following the first character string is read out from the received character string stored in the received character string, and a fixed phrase specified by the second character string is read out from the fixed phrase/phrase storage section 56 and replaced. When all substitutions are completed, the resulting sentence is stored in the message RAM 58, and a completion notification d is issued to the fixed phrase replacement section 55. The fixed phrase replacement unit 55 restarts the search for the first character string in the received character string, and ends the operation when the last character of the received character string is detected.

Through the above operations, the 0 display control unit 59 stores the completed sentence in the message RAM 58.
The completed sentence is read out from 8 and displayed on the display section 60.

As is clear from the above explanation, the fixed phrase/phrase storage unit 56 stores a plurality of fixed phrases in the corresponding first column.
In addition, a plurality of fixed phrases are stored in association with fixed phrases including undefined character strings.

Next, a specific message display control operation will be explained with reference to FIGS. 6 to 8.

In FIG. 6, the first character string is composed of, for example, three characters, and three types are considered, each consisting of a two-character specified character string "$$" and one numeric character from 1 to 3, "$$1" and 8. The fixed phrase corresponding to $$2" includes the undefined character string °"%H (in this embodiment, the number of characters is 1). Also, the second character string is, for example, 1 to
It is assumed that it consists of one character of the number up to 3, and corresponds to one of three types of fixed phrases that can be selected in each fixed phrase.

When the received character string is as shown in FIG. 6(a)(1), in FIG. 7, when the fixed phrase replacing unit 55 accepts the replacement request from the ID detecting unit 53 (step 71), the character pointer P The value of is set to the initial value, and the P-th character (first "$") of the received character string stored in the buffer RAM 54 and P+
Step 72: Extract the first character (second “$”)
), the result is the designated character string "$$", so the determination at step 73 is affirmative (YES) and the process proceeds to step 74.

In step 74, please inform the company of the fixed phrase corresponding to the three characters from P to P-)-2 in the received character string, that is, "$$1" (Figure 6 (a). )(2)) is read from the fixed phrase/phrase storage section 56 and stored in the message RAM 58. When the replacement of the first character string and the fixed phrase is completed, a completion notification C is sent to the fixed phrase replacement unit 57 with the value of the character pointer P (P=1) (step 75), and the fixed phrase replacement unit 57 and waits for the input of the termination notification d (step 76).

In FIG. 8, when the fixed phrase replacement unit 57 receives the end notification C from the fixed phrase replacement unit 55 (step 81),
The undefined character string ゛≠″' in the fixed phrase stored in the message RAM 58 is searched (step 82).
(a) (2)), the determination result in step 83 is affirmative (
YES), and the process proceeds to step 84. In step 84, using the value of P received in step 81, the four characters from P to P+3 of the received character string stored in the buffer RAM 54 are read out. Then, in the next step 85, a selectable fixed phrase "(1... present location),
(2... progress), (3... situation)" (Fig. 6 (a) (3)) are stored in the fixed phrase/phrase storage unit 56, so Reads the fixed phrase "half way" indicated by the second character string "2" from the fixed phrase/passage storage unit 56 and replaces it with the undefined character string ≠,
The message is stored in the message RAM 58.

In this way, the completed sentence "Please inform company r about the progress" is stored in the message RAM 58, and this is displayed (FIG. 6(a) (4)).

Note that in the fixed phrase replacement section 57, the fixed phrase replacement section 55
A termination notification d is issued with the value (P+1) of the character pointer P added to the character pointer P (step 86), and the operation is terminated.

On the other hand, in the fixed phrase replacing unit 55, since the end notification d has arrived in FIG. 7, the determination result in step 76 is affirmative (Yl
! S), and by adding the value "3" to the value of P (P+1), we get (
Step 77) Return to previous step 72. Then, since the specified character string "$ $" does not exist, the 'fJJ determination result in step 73 is negative (NO), and since there is no long received character string and it has ended, the determination result in step 78 is affirmative (YES). ), and the operation ends.

Next, when the received character string is as shown in FIG. 6(b)(1), in FIG.
In step 74, which goes through steps 72 and 73, a fixed phrase ``We received a phone call from a customer.'' (Figure 6 (b) (2)) corresponding to the first character string ``$$2'' is sent as a message. R
AM58 and step 76 via step 75.
Proceed to.

Then, in the fixed phrase replacement unit 57, in step 8 in FIG.
In 5, for the fixed phrase “$ $ 2”, selectable fixed phrases “(1...question), (2...complaint),
(3... Confirmation)" (Fig. 6 (b) (3)) is stored in the fixed phrase/phrase storage unit 56, so the fixed phrase "Question" indicated by the second character string "1" is read from the fixed phrase/phrase storage section 56, replaced with the undefined character string ≠, stored in the message RAM 58, and the operation is terminated via step 86.

As a result, message RAM 58 displays the following message: ``We received a call from a customer with a question.'' ” is stored.

Next, in FIG. 7, the fixed phrase replacement unit 55 starts the search from the fifth character of the received character string in step 72, which goes through steps 76 and 77, and searches from the fifth character of the received character string in step 79, which goes through steps 73 and 78. The fifth character "0" is stored in the message RAM 58, the value of the character pointer P is incremented (step 80), and the process returns to step 72. By repeating the operation for 0 or more, r03-711-1111J are sequentially stored in the message RAM 58. Ru. Then, when the value of character pointer P reaches the 16th character, the specified character string “$$
” is extracted, and the process proceeds to step 74 via step 73, where the fixed phrase corresponding to the first character string “$ $ 3 ” is extracted, “Please contact me,” (Figure 6 (b) (4) )
is stored in the message RAM 58, and the process proceeds to step 76 via step 75.

In this way, in addition to the first sentence, the message RAM 58 stores a second completed sentence such as "Please contact r03-711-1111."

Then, in the fixed phrase replacement unit 57, since the fixed phrase corresponding to the first character string "$$3" does not include the undefined character string "≠" in FIG.
After passing through step 83, the determination in step 83 is negative (NO), and the value of the character pointer P is left as is, and an end notification d is issued to the fixed phrase replacement unit 55, and the operation is ended in step 87).

Then, in FIG. 7, in step 72 after going through steps 76 and 77, the fixed phrase replacement unit 55 starts the search from the character next to "3" in the first character string "'$$3'. and step 78 via step 73
The received character string is determined to have ended, and the operation ends.

As a result, "We received a call from a customer with a question. 0
3-711-11], please contact 1.'' is displayed (Figure 6(b)(5)).

(Effects of the Invention) As explained above, according to the wireless selective calling receiver of the first invention and the second invention, the fixed text includes an undefined part, and the receiver can detect it and replace characters. As a result, even a message with a large amount of information including Chinese characters etc. can be transmitted without increasing the transmission time, and there is an effect that it is possible to construct a radio selective calling system that can flexibly respond to any message.

In addition, in the second invention, since it is possible to include clauses that can be selected as appropriate in the sentence, there is an effect that the degree of freedom of message can be increased.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of the configuration of a radio selective calling receiver according to a first embodiment of the present invention, FIG. 2 is an explanatory diagram of a message display method in the device of the first embodiment, and FIG. 3 is an operation flowchart of a comparing section. FIG. 4 is an operation flowchart of the character replacement unit, FIG. 5 is a block diagram of the configuration of a radio selective calling receiver according to the second embodiment of the present invention, and FIG. 6 is an explanatory diagram of the message display method of the device of the second embodiment. , FIG. 7 is an operation flowchart of the fixed phrase replacement section, and FIG. 8 is an operation flowchart of the fixed phrase replacement section. 1.51... Antenna, 2,52...
・Reception section, 3...Comparison section, 4...R
AM, 5...Character replacement part, 6...
Fixed phrase storage unit, 7.59...display control unit,
8, 60...Display section, 53...ID
Detection unit, 54... Buffer RAM, 55.
...Fixed sentence replacement unit, 56...Fixed sentence/phrase storage unit, 57...Fixed phrase replacement unit, 58.
...Message f' (AM. Agent Patent Attorney Yoshihiro Yawata (1) and the supporting sequence of the two-and-a-half of the cultural and civil servant series [2] ``i'' + 3 corresponding fixed form sentence '03
Go to number -236-222Z and read t magazine. How to go to Hashomeno - Gida No. (1) ' $$ 2 301 (2) 2nd f) Corresponding to sentence snatching sequence ``2'' Tennisa ℃1..Member/beginning display, Jijigu's explanatory drawing No. 2 Fig. , from ≠'s t 馨匁力＼゛oh9maIJ-,yo1-
--Gentomo Yoshitsuji 2-・Mission+Misotsu 2 3--Ichiga ShiL Middle Contents of the 20th Literary Column 2-1-Fushimu (4) Omote historical history "Ritojo 1 Tehi (Middle) Please give me the correct answer to the Mp cup. In Meso 1 - Ji 13 (1) (a) (4) 1st branch official column ``$$ 3'' 1 and connect to the corresponding obscene history r. Enter the road (5) Change the table to 03-711-1111 (1 k-e to 03-711-1111). ), i;
bs,. Message ゛7之y￥, the explanation of this 2 rod flash

Claims (2)

[Claims] (1) A calling signal wirelessly transmitted in a wireless selective calling system includes a predetermined first character string and a second character string that is followed by the first character string and corresponds to a predetermined fixed phrase. When the character string and the fixed phrase corresponding to this second character string include an undefined character string, the third character string that is appended to the second character string and is the content of the undefined character string. The wireless selective calling receiver that receives the calling signal wirelessly and displays the characters detects the first character string from the received character string and the character string that follows the first character string. extracting the second character string from the received character string and outputting it; and extracting and outputting the third character string following the second character string from the received character string when there is no notification of completion of replacement afterwards; a comparison means for at least performing; a fixed-format sentence storage means in which a plurality of fixed-form sentences are stored in association with second character strings corresponding thereto; A fixed phrase is read from the fixed phrase storage means, and when the fixed phrase includes the undefined character string, the undefined string is replaced with the third character string input from the comparison means, and then the replacement completion notification is sent. A wireless selective call receiver comprising: character substitution means for performing at least the following: (2) When a call signal wirelessly transmitted in a wireless selective calling system includes a first character string corresponding to a predetermined fixed phrase and a fixed phrase corresponding to this first character string, the first character string includes an undefined character string. a second character string that specifies a fixed phrase to be selected as the content of the undefined character string; A wireless selective calling receiver that displays characters includes a first storage means in which received character strings are stored; a second storage means in which the fixed phrases are respectively stored in association with fixed phrases including undefined character strings; detecting a first character string from the received character strings stored in the first storage means; The first detected
a fixed-format sentence replacement means for reading out and replacing a fixed-format sentence corresponding to the character string from the second storage means; when the read-out fixed-format sentence contains an undefined character string; A fixed phrase that detects a second character string following a character string from the received character string, reads a fixed phrase specified by the detected second string from the second storage means, and replaces it with an undefined character string. A radio selective call receiver comprising: phrase replacement means;