KR0148524B1 - Method for automatic searching local telephone number and controlling calls - Google Patents

Abstract

[Technical field to which the invention described in the scope belongs]

The present invention relates to an area code automatic search and call control method of an electronic general telephone.

[Technical Challenges to Invent]

SUMMARY OF THE INVENTION An object of the present invention is to provide a method of automatically searching and transmitting a corresponding area code in response to a user's key input by storing the area code in advance in an electronic general telephone system.

[Summary of the solution of the invention]

After the search key input for automatically searching and calling the area code corresponding to the specific area, if the input of numeric keys indicating the name of the specific area is from the 3 × 4 keypad, the numeric key input from the 3 × 4 keypad is pressed. Arrange them in order and compare them with the strings previously stored in memory. As a result of the comparison, the area code corresponding to the matching numeric string is read and sent to the dialing unit to automatically send the area code.

[Important Uses of the Invention]

It can be used in a communication device with a 3 × 4 keypad.

Description

Area code automatic search and half room control of telephone.

1 is a block diagram of an electronic general telephone according to the present invention.

2 is a flow chart of a control unit according to an embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

10 line interface 12 ringer rejection

14: call part 16: ring tone generation unit

18: dialing unit 20: central processing unit

22: memory 24: key input unit

26: key buffer

The present invention relates to a method for automatically searching and dialing an area code of a telephone, and more particularly, to a method for automatically searching for an area code corresponding to a specific area or a specific place in a telephone system and automatically calling the area code.

In general, when a telephone call needs to be made outside of the area where the telephone user is located, the telephone user typically has to dial the corresponding area code (D.D.D) and the receiving telephone number. Normally, the general public recognizes only a few area codes for business and family relations with me, including large cities such as Seoul, Daegu, and Busan. If you do not know the area code of the called party when you need to make a phone call to another station outside the area where the phone user is located, the phone user must find the area code from the person or telephone directory nearby. Therefore, in order to make a call to another area other than the area where the long distance phone and the telephone user are located, there was an inconvenience of having to find the receiving area code through the phone book.

Accordingly, an object of the present invention is to provide a method of automatically searching for and transmitting a corresponding area code in response to a user's key input by storing the area code in advance in the telephone system.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Many specific details are set forth in the following description and in the accompanying drawings to provide a more general understanding of the invention. It will be apparent to those skilled in the art that the present invention may be practiced without these specific details. And a detailed description of known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

1 is a block diagram of a general telephone according to the present invention. Referring to FIG. 1, the line interface 10 is connected to a public telephone network through a telephone line and inputs and outputs various signals and voice signals between the telephone and the public telephone network. Let's do it. The ringer unit 12 is connected to the line interface 10 detects the ring signal received and outputs to the ringer sound generation unit 16. The call path unit 14 is connected to the line interface 10 to process a call voice signal and various tone signals. The ringer sound generating unit 16 receives the outputs of the ringer unit 12 and the call path unit 14 and the output terminal is connected to a speaker to generate a call voice signal and various tone signals as an audible sound. The dialing unit 18 is connected to the call path unit 14 and the output end converts the dialing data output from the central processing unit 20 into a DTMF (Dual Tone Multi Frequency) signal and outputs the same. The central processing unit 20 receives the output of the key input unit 24 to control the overall operation of the phone. The memory 22 has a control program of the central processing unit 20 and is controlled by the central processing unit 20. In addition, a table in which an area code corresponding to a specific area and place name according to the present invention is mapped to a specific digit field. The key input unit 24 is controlled by the central processing unit 20, and the search key for ordering the automatic search and call of the area code corresponding to the specific area and place name, and 3 × 4 for indicating a specific area or place name. A keypad (including * and #) (KEYPAD) is provided. In addition, the key input unit 24 has an error display device for displaying an error state according to the present invention and outputs various key command signals and dialing signals to the central processing unit 20. The key buffer 26 is controlled by the central processing unit 20 and sequentially stores the numeric key data input after the search key is input from the key input unit 24. In addition, the key buffer 26 may use part of the memory 22 or may use a dedicated buffer. In an embodiment of the present invention, a separate key buffer 26 is provided.

Hereinafter will be described in detail the configuration and use example of the 3 × 4 keypad provided on the electronic general telephone in order to implement the present invention.

First, Table 1-1 shows the configuration state of the 3 × 4 keypad provided in the key input unit 24 of the electronic general telephone. Referring to Table 1-1, in order to implement the present invention, consonants and vowels for indicating regions and names are written on each numeric key of a general 3 × 4 keypad. In addition, an embodiment of the present invention will be described using any key (for example, * key) among the numeric keys (including * and # keys) as a search key. In this case, the search key may be provided separately from the 3 × 4 keypad to apply the present invention. The search key may be a function key for ordering automatic search and call of an area code corresponding to a specific area. Referring to Table 1-1 below,

First, numeric keys 0-9 indicate Jeolla-Chungcheong, * key indicates Gyeongsang, and # key indicates Jeju. In addition, when a is indicated, the numeric key 1 is indicated by pressing the numeric key 8 once. If you want to indicate b, c, press the numeric keys 1 twice and three times, respectively. For example, when the user wants to know the area code of Gumi, as shown in Table 1 above, first press the numeric key 1 corresponding to a. After that TT sequentially press 8. Press the numeric key 2 twice to indicate ㅁ and press 9 to indicate ㅣ. Accordingly, the sequence of numbers created sequentially is 18229. In particular, the area numbers corresponding to regions and names are the same because Seoul, Busan, Incheon, Daegu, Gwangju, Daejeon, and Jeju are the same.

On the other hand, the table previously stored in the memory 22 can be configured, for example, as shown in Table 2 below.

Table 2 is a numeric key (0-9, *, #) representing a large area, a region corresponding to the numeric key (Jeolla-Chungcheong, Gyeongsang, Jeju), and a numeric string field representing a place name included in the region. (36663382, 22283611, 165733, etc.) and area code fields (02, 051, 0356, etc.) corresponding to the place names. The numeric string field refers to a field in which numeric keys indicating a specific place name are sequentially stored. For example, the number field 165733 in Gyeonggi-do represents Gapyeong. This can be proved through the sequential input process of the numeric keys described in Table 1 above. Meanwhile, 163355776 represents Ganghwa and 177336633 represent Goyang-gun. The area code field refers to a field in which area codes corresponding to each area and place names are sequentially stored.

2 is a flowchart illustrating an operation of a control unit according to an exemplary embodiment of the present invention. The operation of the present invention will be described in detail with reference to FIG. 1 and Tables 1 and 2. FIG. First, when the hook switch of the above-described electronic general telephone is turned off, the central processing unit 20 checks whether a search key (* key) is input from the 3 × 4 keypad provided in the key input unit 24 in step 52. do. If the search key (* key) is not input in step 52, that is, if numeric keys indicating general phone number selection are input, in step 56 the central processing unit 20 enters the numeric keys from the 3 × 4 keypad. In response, each part of the telephone system is controlled to perform the corresponding function. On the other hand, if the search key (* key) is input in step 52, the CPU 20 proceeds to step 54, switches to the area code search mode, and proceeds to step 58. In step 58, the CPU 20 checks whether numeric keys indicating a specific region and place names are sequentially input from the 3 × 4 keypad of the key input unit 24. In step 58, when a numeric key indicating a specific region and place name that the user wants to find is input, the CPU 20 proceeds to step 60 and arranges the numeric keys input in step 58 into a sequential number string field to form a key buffer. Save at 26. In step 62, the CPU 20 checks whether the numeric string field stored in the key buffer 26 is in a table previously stored in the memory 22. If the numeric string field stored in the key buffer 26 is not present in the table of the memory 22 in step 62, the CPU 20 proceeds to step 64 and an error occurs in the error display device provided in the key input unit 26. Display the message and return to step 58. On the other hand, if the numeric string field stored in the key buffer 26 is in the table of the memory 22 in step 62, the CPU 20 proceeds to step 66 to read the area code corresponding to the numeric string field. The memory 22 is sequentially stored in a dedicated buffer of the memory 22 and the process proceeds to step 68. At this time, the dedicated buffer means that the read area code is stored in the memory 22. In step 68, the central processing unit 20 checks whether the search key (* key) is input again from the 3 × 4 keypad of the key input unit 24. At this time, the search key (* key) functions as a command key for transmitting the searched area code to the dialing unit 18. If the search key (* key) is input in step 68, the central processing unit 20 transmits the area code stored in the dedicated buffer to the dialing unit 18. Thereafter, the dialing unit 18 converts and outputs the area code that is thrust from the CPU 20 into a DTMF signal. Therefore, the user of the electronic general telephone can dial the corresponding telephone number after listening to the outgoing signal transmitted from the dialing unit 18.

As described above, in the present invention, when the telephone user does not know the receiving area code to which the user wants to talk, the receiving area code is automatically retrieved by inputting the receiving area name into the telephone system using a 3 × 4 cappad. And the convenience of originating.

Meanwhile, in the above description of the present invention, specific embodiments have been described, but various modifications can be made without departing from the scope of the present invention. In particular, the embodiment of the present invention is applied to an electronic general telephone, but may be applied to a communication device having a 3 × 4 keypad, a control means and a memory without special modifications as necessary.

Claims (3)

Automated area code for an electronic general telephone with memory for storing area code corresponding to each area and place name to a specific string field, and a 3x4 keypad containing search keys for searching and calling area codes. A search and origination control method, comprising: a first step of checking whether a search key is input from the 3x4 keypad in a hook switch off state, the control means for requesting a search for a telephone number of a specific region and a place name, and the search After the control unit switches to the area code search mode in response to a key input, when a numeric key indicating a specific area and place name is input from the 3x4 keypad, the control means converts the key buffer area into a sequential number field. The second process of storing in the memory, and the control means is the numeric sequence field stored in the key buffer area and the numeric sequence field previously stored in the memory Comparing and checking a number string field stored in the key buffer area and storing the area code corresponding to the number string field in the dedicated buffer area of the memory when the number string field stored in the memory is matched. And a fourth step in which the control means reads out the area code stored in the dedicated buffer area and sends it to the dialing unit in response to a search key for requesting an area code to be input from the 3 × 4 keypad. Area code automatic search and call control method of an electronic general telephone. [2] The method of claim 1, wherein a search key for searching a specific area and place name is searched for in addition to the 3 × 4 keypad of the electronic general phone. The error display apparatus according to claim 1, wherein the control means is provided in the key input unit when the numeric string stored in the key buffer area of the third process does not match the numeric string stored in the numeric string field of the memory. And automatically processing the area code of the electronic general telephone after displaying an error message.