JP2737283B2 - Radio selective call receiver - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a radio selective call receiver with a character display function.

(Prior Art) A radio selective calling system allows a person who is out of or away from the office to carry a small portable receiver, wirelessly alerts a ringing sound corresponding to the ringing of a bell of a telephone, and calls the nearest telephone. It was developed to encourage a response from
With the development of compact and high-performance portable receivers and the development of a radio paging signal system, the radio selective paging system has become capable of not only a simple paging service but also a service for transmitting characters such as numbers, kana and alphabets. Is well known.

The radio selective calling receiver to which the present invention is applied is a portable receiver used in a radio selective calling system that can also provide a character transmission service. There are the following two conventional character transmission systems. The first is a method of wirelessly transmitting a character string of a message as it is. Second, a plurality of sets of a sentence example (fixed sentence) and a character string (for example, a combination of numbers) indicating the sentence are prepared in advance, and when the character string is wirelessly transmitted, the fixed sentence corresponding to the character string is displayed. This is the method that was adopted.

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

Although the first method has an advantage that any message can be transmitted, alphanumeric characters and katakana require 8 bits per character, and kanji and hiragana require 12 bits per character.
The transmission time increases in proportion to the number of characters. Therefore, a certain limit is imposed on the message length that can be actually transmitted, and it is difficult to transmit the intended message content.

The second method aims at shortening the transmission time, which is a drawback of the first method, but it is difficult to convey the intended message content because a sentence example prepared in advance is used.

The present invention has been made in view of such problems,
An object of the present invention is to provide a radio selective call receiver which enables the construction of a radio selective call system capable of transmitting intended message contents without increasing transmission time.

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

That is, in the radio selective calling receiver of the first invention, the call signal transmitted by radio in the radio selective calling system is provided with a predetermined first character string and a postfix of the first character string. The second character string corresponding to the predetermined fixed phrase and the fixed character string corresponding to the second character string are included after the second character string when the fixed phrase includes an undefined character string. And a third selective character string comprising the contents of the undefined character string. The wireless selective call receiver, which wirelessly receives the call signal and performs character display, comprises: Detecting a character string, extracting the second character string following the character string from the received character string and outputting the extracted character string, and when there is no subsequent notification of replacement, replacing the third character string following the second character string with the third character string. Extracting from the received character string and outputting it at least A fixed sentence storing means in which a plurality of fixed sentence is stored in association with a second character string corresponding to each of the fixed sentence; receiving the second character string from the comparing means and corresponding thereto When the fixed phrase is read from the fixed phrase storage unit, and when the fixed phrase includes the undefined character string, the undefined character string is replaced with the third character string input from the comparing unit, and then the replacement end notification is made. Character replacement means for at least doing the following:
It is characterized by having.

Further, in the radio selective calling receiver of the second invention, the paging signal wirelessly transmitted in the radio selective calling system includes a first character string corresponding to a predetermined fixed phrase and a fixed phrase corresponding to the first character string. And a second character string that designates a fixed phrase selected as the content of the undefined character string, which is added to the first character string when the undefined character string is included. In the case: a radio selective call receiver for receiving the call signal by radio and displaying characters, a first storage means for storing a received character string; and a first character string corresponding to each of a plurality of fixed phrases. A second storage unit that stores a plurality of fixed phrases in association with a fixed phrase including an undefined character string; and a received character string stored in the first storage unit. Finds the first string from Fixed form sentence replacement means for reading out a fixed form sentence corresponding to the detected first character string from the second storage means and performing replacement; and detecting when an undefined character string is included in the read fixed sentence. A second character string following the detected first character string is detected from the received character string, and a fixed phrase designated by the detected second character string is read from the second storage means, and an undefined character string is read. And fixed phrase replacement means for performing replacement.

(Operation) Next, the operation of the radio selective calling receiver of the present invention configured as described above will be described.

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

In the second invention, the first character string extracted from the received character string is used.
In the case where the fixed phrase corresponding to the character string includes an undefined character string, the undefined character string is replaced with a fixed phrase specified by the second character string, and a completed sentence is created and displayed.

That is, since the undefined portion is provided in the fixed phrase and can be replaced on the receiving side, even a message having a large amount of information including kanji and the like can be transmitted without increasing the transmission time. Also, it is possible to construct a radio selective calling system that can flexibly respond to an arbitrary message.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

In the radio selective calling system according to the first embodiment, a predetermined first character string and a second character string that is added to the first character string and correspond to a predetermined fixed phrase are included. When a fixed phrase corresponding to the second character string includes an undefined character, the fixed character sentence is added to the second character string and includes a third character string that is the content of the undefined character. A call signal is transmitted wirelessly.

As shown in FIG. 1, for example, as shown in FIG. 1, a radio selective call receiver for receiving a call signal by radio and displaying a character includes an antenna 1, a receiving unit 2, a comparing unit 3, a RAM 4, a character replacing unit. 5, a fixed phrase storage unit 6, a display control unit 7, and a display unit 8
It is basically composed of

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

The comparison unit 3 uses the same first character string as the transmitting side (hereinafter, the first character string)
Have referred to) and "string", at the same compared to the received string d _1, sequentially transfers If they do not match the string d ₂ to RAM 4. If they match, the character string d ₃ (second character string) subsequent to the specified character string from the received character string d ₁ is sequentially transferred to the character replacing unit 5, and the end signal is sent from the character replacing unit 5.
d ₅ is sequentially transfers the string d ₃ where subsequent to come (third string) to the character substitution unit 5. Then resumes the comparison operation again received string receiving an input of the end signal d ₅ and string.

The fixed phrase storage unit 6 stores a plurality of fixed phrases in association with the corresponding second character strings. Usually, the second character string is a fixed-length character string composed of a combination of numbers and the like.

Upon receiving the second character string, the character replacement unit 5 reads the corresponding fixed phrase from the fixed phrase storage unit 6, and if the fixed phrase does not include an undefined character string, converts the fixed phrase into a complete sentence. with it transferred as d ₄ to RAM 4, end signal d ₅
Is sent to the comparison unit 3. On the other hand, when it contains an undefined string fixed sentence thus read out to stop the generation of the end signal d _5. Then, since the third character string is inputted from the comparator 3, while the transfer with its third string that undefined string substitution to a form a complete sentence d ₄ it to RAM 4, end signal It emits a d ₅ to the comparator 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.

Although the above is a general operation, a specific description will be given next with reference to FIGS. 2 to 4. FIG. 2A is an example of a message having the same format as the conventional message that does not include an undefined character string, and FIG. 2B is an example of a message according to the present invention that includes an undefined character string.

Transmission string, i.e. received string d ₁ is the second diagram (a) (1)
The operation of the comparison unit 3 (FIG. 3) and the operation of the character replacement unit 5 (FIG. 4) in the case of are as follows. First, the comparator 3 compares the received string d ₁ received from the receiving unit 2 and the string $$ (step 31), the detection of the string $$ performed (step 32). Since the character string of “03-236-2222” does not include the designated character string ＄＄, step 32
Is negative (NO), and the process proceeds to step 34. The determination here is also negative (NO), and the character string "03-236-2222" is written to the RAM 4. Then, since the next two characters ＄＄ are the designated character string, the determination in step 32 becomes affirmative (YES) and proceeds to step 36, where the next character (second character string) “1” of the designated character string ＄＄ withdrawn 'from received string d ₁ that character "1" (d ₃₎ transferring the character substitution unit 5 waits for the input of the end signal d ₅ (step 37).

The character replacement unit 5 reads out the fixed phrase "Please call the number" (FIG. 2 (a) (2)) corresponding to the received character "1" from the fixed phrase storage unit 6 (step). 41), it is determined whether or not the undefined character * is included in the fixed phrase (step 42). This determination is made for each character from the first character to the last character of the fixed phrase (steps 43 and 44). The determination in step 32 is also performed for each character. Since the undefined character * is not included in the standard sentence (FIGS. 2 (a) and (2)), the determination in step 42 is negative (NO), and the end of the standard sentence is detected.
43 determination proceeds to step 45 becomes affirmative (YES), complete sentence issues an end signal d ₅ to comparator 3, and whose fixed phrase in the next step 46 (FIG. 2 (a) (2)) as d ₄ writing to RAM4, to end the operation.

In the comparison unit 3, the determination in step 37 is affirmative (YE
S) and returns to the previous step 31 to write the character string “takahashi” after the character “1” to the RAM 4 (step 32 → same as above).
34 → 35 → 31) When the end of the received character string is detected,
The determination in step 34 is affirmative (YES), and the comparing unit 3 ends the operation. The message stored in the RAM 4 is read by the display control unit 7 and displayed on the display unit 8 (FIGS. 2A and 3C).

Next, the operation when receiving the string d ₁ is a second view (b) (1) is as follows. In the comparison unit 3, the received character string d ₁
Are the designated character $, the determination in step 32 is affirmative (YES), and the next character "2" is determined in step 36.
Passing to the character substitution unit 5 waits for the input of the end signal d ₅ (step 37).

In the character replacement unit 5, the fixed phrase corresponding to the received character "2""There is a visitor. Please go to the reception immediately ***" (FIG. 2 (b) (2)) is stored in the fixed phrase storage unit 6. (Step 41), Step 42 → Same 43 → Same 44 →
If an undefined character * is detected by repeatedly executing the same step 42, the determination in step 42 becomes affirmative (YES), and the routine proceeds to the next step 47. Then, since there is no input of the comparator 3 in the end signal d _5, the process proceeds from step 37 to step 38, the next character "3" of the character "2" to the character substitution unit 5 returns to pass the step 37. In the character replacement unit 5, step 47 is executed, and the first undefined character “*” is replaced with the character “3”,
In step 44, the check character is incremented by one and the process returns to step 42. As a result, the second undefined character “*” is replaced with the character “0”, and the third undefined character “*” is replaced with the character “1”. Then, in step 43, the character "2"
Is detected, the character replacement unit 5 executes steps 45 and 46 to end the operation. The comparison unit 3 is determined in step 37 proceeds to affirmative (YES) step 31, the received string d ₁ is because the finished, it in step 34 to end the comparison operation is detected. The message stored in the RAM 4 is read out by the display control unit 7 and displayed on the display unit 8 (FIGS. 2 (b) and (3)).

Next, a second embodiment of the present invention will be described with reference to FIGS. In the radio selective calling system according to the second embodiment, when a first character string corresponding to a predetermined fixed phrase and a fixed phrase corresponding to the first character string include an undefined character string, the first character string is output. A call signal including a second character string that follows the column and specifies a fixed phrase selected as the content of the undefined character string is wirelessly transmitted.

As shown in FIG. 5, for example, as shown in FIG. 5, a radio selective calling receiver that receives such a calling signal by radio and performs character display includes an antenna 51, a receiving unit 52, an ID detecting unit 53, a buffer RAM 54, and the like.
Fixed phrase replacement unit 55, fixed phrase / phrase storage unit 56, fixed phrase replacement unit 57, message RAM 58, display control unit 59
And a display unit 60.

First, a general operation will be described. The calling signal received by the antenna 51 is demodulated (and decoded) by the receiving unit 52,
Input to the ID detection unit 53. The ID detection unit 53 detects an ID number (that is, an identification number) from the input calling signal. If the ID number matches the ID number of the own receiver, the message following the ID number is used as the received character string a as the buffer RAM 54. And a message replacement request b is sent to the fixed phrase replacement unit 55.

Then, the fixed phrase replacement unit 55 sequentially reads the received character string 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 unit 56 and replaced, stored in the message RAM 58, and an end notification c is issued to the fixed phrase replacement unit 57. If the first character string does not exist, it is stored in the message RAM 58 as it is.

Further, upon receiving the end notification c from the fixed phrase replacement unit 55, the fixed phrase replacement unit 57 searches for an undefined character string in the fixed phrase stored in the message RAM 58. If there is an undefined character string, a second character string following the first character string is read from the received character string stored in the buffer RAM 54, and a fixed phrase specified by the second character string is read. Is read from the fixed phrase / phrase storage unit 56 and replaced. When all the replacements have been completed, the result sentence is stored in the message RAM 58, and an end notification d is issued to the fixed phrase replacement unit 55. In the fixed phrase replacement unit 55, the search for the first character string in the received character string is started again, and the operation ends when the last character of the received character string is detected.

With the above operations, the completed sentence is stored in the message RAM 58. The display control unit 59 reads the completed sentence from the message RAM 58 and displays it on the display unit 60.

As is clear from the above description, the fixed phrase / phrase storage unit 56 stores the first fixed phrase corresponding to each of the first fixed phrases.
Is stored in association with the fixed-form phrase including the undefined character string.

Next, a specific message display control operation will be described with reference to FIG. 6 to FIG.

In FIG. 6, the first character string is composed of, for example, three characters, a two-character designated character string "@", and numerals 1 to 3 to 1.
Considering three types of characters, the fixed phrases corresponding to “$ 1” and “$ 2” include an undefined character string “*” (the number of characters is 1 in this embodiment). It is also assumed that the second character string is composed of, for example, one character from 1 to 3 and corresponds to one of three types of fixed phrases that can be selected in each fixed phrase.

The received character string is as shown in FIG. 6 (a) (1). 7, when the fixed phrase replacement unit 55 receives the replacement request b from the ID detection unit 53 (step 71), it sets the value of the character pointer P to an initial value and sets the value of the received character string stored in the buffer RAM 54. The P-th character (the leading "@") and the P + 1-th character (the second "@") are extracted (step 72). Since the result is the designated character string “＄＄”, the determination in step 73 is affirmative (YES), and the flow proceeds to step 74. Step 74
Then, the fixed letter "Please contact the company *" corresponding to three characters from P to P + 2 in the received character string, that is, "$ 1" (Fig. 6 (a) (2)) Fixed phrase / phrase storage
Read from 56 and store it in message RAM 58.
When the replacement between the first character string and the fixed phrase is completed, the value of the character pointer P (P = 1) is sent to the fixed phrase replacement unit 57.
(Step 75), and waits for the input of the end notification d from the fixed phrase replacement unit 57 (step 7).
6).

In FIG. 8, when the fixed phrase replacement unit 57 receives the end notification c from the fixed phrase replacement unit 55 (step 81), it searches for an undefined character string “*” in the fixed phrase stored in the message RAM 58 (step 81). 82). Since this fixed phrase contains an undefined character string "*" (FIG. 6 (a)
(2)), the determination result of step 83 becomes affirmative (YES), and the routine proceeds to step 84. In step 84, using the value of P received in step 81, four characters from P to P + 3 of the received character string stored in the buffer RAM 54 are read.
That is, "$ 12" has been read. Next, in the next step 85, three characters from P to P + 2, that is,
For the fixed phrase “(1 ...
Since (current position), (2... Midway), (3... Situation) (FIGS. 6 (a) and (3)) are stored in the fixed phrase / phrase storage unit 56, the P + 3rd character is a character. The fixed phrase “intermediate progress” indicated by the second character string “2” is read from the fixed phrase / phrase storage unit 56, replaced with an undefined character string *, and stored in the message RAM 58.

Thus, the message RAM 58 stores a completed sentence "Please contact the company about the progress", which is displayed (FIG. 6 (a) (4)).

In addition, the fixed phrase replacement unit 57 adds the value (P + 1) of the character pointer P to the fixed phrase replacement unit 55 and notifies the end notification d.
Is issued (step 86), and the operation ends.

On the other hand, in the fixed phrase replacement unit 55, since the end notification d has been received in FIG. 7, the determination result of step 76 is affirmative (YES).
Then, the value “3” is added to the value of P (P + 1) (step 77), and the process returns to the previous step 72. Then, the specified character string “＄
＄ ”does not exist, so the result of the determination in step 73 is negative (N
O), and since the received character string does not exist and has been completed, the determination result of step 78 is affirmative (YES), and the operation ends.

Next, a case where the received character string is as shown in FIG. 6 (b) (1).
In FIG. 7, in the fixed phrase replacement unit 55, step 71 → same
In step 74 after 72 → 73, the first character string “＄＄ 2”
Is stored in the message RAM 58 and proceeds to step 76 via step 75.

Then, in FIG. 8, the fixed phrase replacement unit 57 proceeds to step 85 through steps 81 → 82 → 83 → 84 in FIG. 8 to select a fixed phrase “(1. ), (2... Claims), (3... Confirmation) "(FIGS. 6 (b) and (3)) are stored in the fixed phrase / phrase storage unit 56, so that the second character string" 1 "is indicated. Fixed phrase "Question"
Is read from the fixed phrase / phrase storage unit 56, is replaced with an undefined character string *, and is stored in the message RAM 58.
End the operation via 6.

As a result, the message RAM 58 stores one completed sentence "There was a telephone call from the customer."

Next, in FIG. 7, the fixed phrase replacement unit 55 starts a search from the fifth character of the received character string in step 72 after step 76 → 77, and in step 79 after step 73 → 78. The fifth character "0" is stored in the message RAM58.
And increments the value of the character pointer P (step 8
0), and return to step 72. By repeating the above operation, “03-711-1111” is sequentially stored in the message RAM 58. When the value of the character pointer P becomes the 16th character, the designated character string "$" is extracted, and the process proceeds to the step 74 via the step 73 to correspond to the first character string "$ 3". The fixed phrase "Please contact us." (Fig. 6 (b)
(4)) is stored in the message RAM 58, and the flow advances to step 76 via step 75.

Thus, the message RAM 58 stores a second sentence completion sentence "Please contact 03-711-1111." In addition to the first sentence.

Then, in FIG. 8, the fixed phrase replacement unit 57 does not include the undefined character string “*” in the fixed sentence corresponding to the first character string “$ 3”. Is negative (NO) in step 83, and the character pointer P
Is left as it is, an end notification d is issued to the fixed phrase replacement unit 55 (step 87), and the operation is ended.

Then, in FIG. 7, the fixed phrase replacement unit 55 proceeds to step 72 after step 76 → step 77 in FIG.
The search is started from the character next to "3" in "# 3", and the received character string is determined to be ended in step 78 through step 73, and the operation is ended.

As a result, "I received a call from a customer.
Please contact 03-711-1111. Is displayed (FIG. 6 (b) (5)).

(Effect of the Invention) As described above, according to the radio selective calling receivers of the first invention and the second invention, the fixed phrase includes an undefined portion, and the detection and character replacement can be performed by the receiver. As a result, even a message with a large amount of information including kanji and the like can be transmitted without increasing the transmission time, and there is an effect that a radio selective calling system capable of flexibly responding to an arbitrary message can be constructed.

According to the second aspect of the present invention, a clause that can be appropriately selected in a sentence can be included, so that there is an effect that the degree of freedom of a message can be increased.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a 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, FIG. FIG. 4 is an operation flowchart of a comparison unit, FIG. 4 is an operation flowchart of a character replacement unit, FIG. 5 is a block diagram showing a configuration of a radio selective calling receiver according to a second embodiment of the present invention, and FIG. FIG. 7 is an operation flowchart of the fixed phrase replacement unit, and FIG. 8 is an operation flowchart of the fixed phrase replacement unit. 1,51 ... antenna, 2,52 ... receiver, 3 ... comparator, 4
… RAM, 5… Character replacement unit, 6… Fixed sentence storage unit, 7,5
9: display control unit, 8, 60: display unit, 53: ID detection unit, 5
4 ... buffer RAM, 55 ... fixed phrase replacement unit, 56 ... fixed phrase / phrase storage unit, 57 ... fixed phrase replacement unit, 58 ... message RAM.

Claims (2)

(57) [Claims] A call signal wirelessly transmitted in a radio selective calling system is a predetermined first character string and is added to the first character string and corresponds to a predetermined fixed phrase. When the second character string and the fixed phrase corresponding to the second character string include an undefined character string, the second character string is added to the second character string and forms the contents of the undefined character string. Third
The radio selective call receiver that receives the call signal by radio and performs character display, detects the first character string from a received character string, and Extracting the second character string from the received character string and outputting the extracted character string, and extracting and outputting the third character string subsequent to the second character string from the received character string when there is no notification of replacement completion thereafter. A comparison unit that performs at least a plurality of fixed phrases, and a fixed phrase storage unit in which a plurality of fixed phrases are stored in association with the corresponding second character strings; and receives the second character strings from the comparison unit and corresponds thereto. When the fixed phrase is read from the fixed phrase storage unit, and when the fixed phrase includes the undefined character string, the replacement is performed after replacing the undefined character string with the third character string input from the comparing unit. Radio selective calling receiver characterized by comprising a; Ryo least performed and character replacing means to the notification. 2. A paging signal transmitted by radio in a radio selective calling system when a first character string corresponding to a predetermined fixed phrase and a fixed phrase corresponding to the first character string include an undefined character string. And a second character string that follows the first character string and specifies a fixed phrase selected as the content of the undefined character string;
A radio selective call receiver that receives the call signal by radio and performs character display, a first storage unit that stores a received character string; and a plurality of fixed phrases are associated with the corresponding first character string. Second storage means for storing a plurality of fixed phrases in association with a fixed phrase including an undefined character string; and a first storage means for storing the first fixed phrase from the received character string stored in the first storage means. And a fixed phrase replacement unit that reads a fixed phrase corresponding to the detected first character string from the second storage unit and performs replacement.
When an undefined character string is included in the read fixed phrase, a second character string following the detected first character string is detected from the received character string, and the detected second character string is detected. And a fixed phrase replacement means for reading a fixed phrase specified by the second storage means from the second storage means and replacing it with an undefined character string.