JP3256290B2 - Button phone system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a key telephone system in which a plurality of types of button telephones (hereinafter referred to as telephones) having different mounting functions are mixed and accommodated in the same main unit so that, for example, the number of line connections differs .

[0002]

2. Description of the Related Art A key telephone system in which a plurality of telephones having different mounting functions are accommodated in the same main unit has been put into practical use. A typical example thereof is the number of line connections, for example, the connection of external lines. There are systems in which different numbers of telephones are accommodated in the same main device.

[0003] In a key telephone system accommodating a plurality of types of telephones, several types of telephones having different numbers of external line selection buttons (hereinafter referred to as "external line buttons") are prepared depending on the number of external line connections. In many cases, the number of external line buttons to be attached varies depending on the model, and the other parts are often configured in the same design.

For example, as shown in FIG. 3, three types of telephone TEL- having nine, six and three external line buttons, respectively.
Assuming that A, B, and C are prepared, telephones TEL-B and C having six or three external buttons have external line buttons C01 to C9 of TEL-A having a maximum of nine external buttons.
Outer line button C09 that becomes unnecessary when an outer line is not connected in C09
07 to C09 or C04 to C09 are excluded, and the panel 102, in which the excluded external button mounting portion (the portion shown by the broken line) is in a closed plate shape, is fitted into the external line button mounting portion of the housing 101. I have.

In the above key telephone system, in order to simultaneously control different types of telephones, it is necessary for the main unit to determine the type of telephone.
In the phone, the data set for model identification, that is,
An ID code transmitting means for transmitting an ID code assigned to each model of the telephone is provided.

That is, the conventional example will be described with reference to FIG. 4. The telephone TEL is controlled by a 4-bit or 8-bit microcomputer (sub CPU) 21 and a sub C
The PU 21 controls the detection of pressed key (push button) information from the key matrix 22, the blinking control of the visual display 23, and the data (for example, the key) between the main unit ME and the main CPU 11 via the data transmitting / receiving units 24 and 12. Information, blinking information of the visual display, and other information).

Telephone TEL having different numbers of external line connections
(TEL-A, B, C shown in FIG. 3) at the same time, the main CPU 11 of the main device ME needs to control each telephone TEL.
Needs to be recognized, and an ID code for that purpose is included in the transmission / reception information. That is, each telephone TEL
The sub CPU 21 reads the ID code indicating its own model from the code assigning unit 25, transmits the ID code to the main device ME via the data transmitting / receiving unit 24, and the CPU 11 of the main device ME transmits the ID code via the data transmitting / receiving unit 12. The ID code is received, whereby the model of each telephone TEL, that is, the number of outside lines is recognized.

The ID code assigning section 25 is usually composed of a code forming circuit provided on a printed circuit board in the telephone TEL, and connects a strap line to a necessary portion of the circuit, or a circuit component (for example, a pull-up resistor). ) Are connected to form the ID code.

[0009]

Since the ID code of the telephone TEL needs to be changed for each model, the circuit configuration of the ID code assigning section 25 differs according to the model according to the above-mentioned conventional technology. The parts to be performed and their scores also differ for each model.

For this reason, when manufacturing the telephone TEL, it is necessary to order parts for each model.
The manufacturing process, the inspection process, and the like also differ for each model, which complicates manufacturing and management, and easily causes errors.

In addition, since components are generally mounted on a printed board of the telephone TEL at a high density, it is often very difficult to secure a mounting space for providing the ID code assigning section 25.

The sub CPU 21 also needs an ID recognition port (connection port of the ID code assigning unit 25), and this port is used only when the power is turned on (the main device ME by reading the ID code). The telephone model is identified at the start of the operation of the system.) Since it is not used thereafter, such a method of using the port is not efficient.

The present invention solves the above problems and provides a telephone-specific data transmission device which is easy to manufacture, has a small number of circuit components mounted on a printed circuit board, and has a high efficiency of using a port of a CPU. That is the task.

[0014]

In order to solve the above-mentioned problems, the present invention provides a plurality of normally open type external line selection switches.
A switch, and an operation button among the plurality of switches.
The number of switches that are turned on by pressing
In a key telephone system in which a plurality of different types of key telephones are housed in the same main unit, all of the switches
The signals constantly output from a plurality of specific switches are
ID for each model by making it different for each type of key phone
Code information, and the main unit is configured based on the ID code information.
And determining the model of the key telephone to be connected .

[0015]

According to the present invention, the number of external line connections is determined based on the model.
The external line selection switch, regardless of the model,
A number of switches are provided in each type of telephone, and among the plurality of switches, an operation button is provided depending on the model, and a switch that is actually used and a switch that is not used because the operation button is not provided are provided. Multiple switches not used because they are different
Switches, for example, always on for three switches,
It is always on and off, and ID code information for model determination is output using a combination of these on and off signals.

Accordingly, there is no need for an independent circuit configuration for creating an ID code and a CPU port for the ID code in the telephone, and the telephone can have a common printed circuit board and circuit components for each model. .

[0017]

1 to 3 illustrate an embodiment of the present invention. FIG. 1A is a block diagram of a main part, FIG. 1B is a circuit diagram of a key matrix, and FIG. FIG. 2B is a cross-sectional view showing the structure of an external line selection switch portion of a telephone, FIG. 2B is a cross-sectional view showing the structure of an external line selection switch portion used for creating an ID code of the telephone, and FIG. It is a figure showing the layout of the operation side about three models.

First, the operation surface structure of the telephone will be described with reference to FIG.
In particular, an outside line button operation surface related to the present invention will be described.

In FIG. 3, TEL-A is a telephone having nine outside buttons (C01 to C09), TEL-B is a telephone having six outside buttons (C01 to C06), TE
LC is a telephone having three outside line buttons (C01 to C03), and shows an example of three types of telephones prepared by the key telephone system.

The telephone TEL-A is a telephone having 9 (maximum) external line connections, one for each external line, a total of nine external line buttons C01 to C09 and a light emitting diode 23 as a visual display. Is provided.

The telephone TEL-B is a telephone having six external lines, and is provided with a total of six external line buttons C01 to C06 and a light emitting diode 23, one for each external line. In the TEL-A, the locations where the outside line buttons C07 to C09 are attached include the light emitting diodes 23 corresponding to each of the outside line buttons C07 to C09.
The EL-B is blank (portion indicated by a broken line), and the structural button insertion hole of the corresponding portion of the telephone casing 101 has an operation surface panel in which a portion corresponding to the external line buttons C07 to C09 has a closed plate shape. Hidden at 102.

The telephone TEL-C is a telephone having three external lines and the structure of the operation surface is the same as that of the telephone T.
It can be understood by analogy with the structure of EL-B.

In the above-mentioned telephones TEL-B and TEL-C (telephones in which the number of external line connections is not the maximum number), the places where the external line buttons are not mounted in common are the external line buttons C07 to C07.
09, and the outside line buttons C07 to C09
Is used for creating a telephone model identification ID code to be described later.

The structure of the external line selection switch portion of the telephone TEL (TEL-A, B, C) will be described with reference to FIGS. 2 (A) and 2 (B). 2 (A) and 2 (B), the mounting structure of the light emitting diode 23 is omitted.

2A and 2B, reference numeral 101 denotes a housing of the telephone TEL, reference numeral 102 denotes an operation panel, and reference numeral 103 denotes an outside.
The key top which is a line button , 104 is a printed board, 10
5 is a switch, 106 is an operation stator, 107 is a key pattern formed on the printed board 104, 108 is a contact made of conductive rubber, 109 is rubber, and 110 is a diode.

The switch 105 is a so-called rubber switch comprising a pair of key patterns 107 on a printed board, a switch driver 109A and a flexible elastic portion 109B of the rubber 109, and a contact 108 affixed to the driver 109A. The mechanism itself of the switch 105 is known.

When the switch 105 is used as a line selection switch, as shown in FIG.
The key top 103 is inserted into the button insertion hole 101A of the first and the button 109A of the rubber 109 so as to cooperate with the driver 109A. The key top 103 is kept in a restored state by the restoring force of the flexible elastic portion 109B of the rubber 109. When the key top 103 is pressed, the driver 109A descends and the pair of key patterns 107, 107 is electrically connected by the contact 108. By doing so, it will function as a switch.

When the switch 105 is used for creating an ID code, as shown in FIG. 2B, the operation stator 106 is inserted into the button insertion hole 101A as necessary.
From the inside . This operation stator 106 is
1 between the switch operation surface and the switch 105,
The switch 105 is always kept in an operating state (a state in which the pair of key patterns 107 and 107 are electrically connected by the contact 108). When the operation stator 106 is fitted into the button insertion hole 101A, it does not protrude from the surface of the housing 101, as shown in FIG.
The operation stator 10 is formed in a shape having a step portion having a large diameter.
The button insertion hole 101A, including the button insertion hole 101A into which no 6 is fitted, is closed by the closing plate shape of the operation surface panel 102.

Further, among the switches 105 used for creating the ID code, those having the operation stator 106 are always operated, so that they are connected in series with the key pattern 107 of the switch 105 in order to prevent circuit wraparound. The diode 110 is connected (see FIG. 1B).

The components of the telephone TEL are key top 1
Except for the number 03 used, the number of operation stators 106 used, the number of mounted visual indicators 23, and the shape of the operation panel 102 (outside line buttons and mounting holes for the visual indicators 23), all others are common to all models. It is.

In the example shown in FIG. 3, since the telephone TEL-A has the maximum number of nine external lines connected, the external line buttons C01 to C01
The key tops 102 are attached to all of the mounting holes 101A of C09, and the switches 105 corresponding to the external line buttons C01 to C09 are used as original line selection switches. As will be described later, the outside line buttons C07 to C09
Are also used to create a model identification ID code. In the case of the telephone TEL-A,
Since there is no always-on switch in the switch 105, the model identification ID code is "000" (the code is "1" when the switch is on and "0" when the switch is off).
It is. That is, the telephone TEL-A (the number of external line connections is nine)
The ID code of the line telephone) is “000”.

The telephone TEL-B has six external lines.
Since it is a line, the insertion hole 1 of the outside line buttons C01 to C06
01A with key top 102 attached, and outside line button C07
If necessary (according to the determined ID code), for example, the operation stator 106 is attached to the insertion hole 101A of the outside line button C09, and the insertion holes of the other outside line buttons C07 and C08 are inserted into the insertion holes 101A to C09. Nothing is attached to 101A. As described above, the switches 105 corresponding to the outside line buttons C01 to C06 function as line selection switches,
The switch 105 corresponding to the outside line buttons C07 to C09 functions for creating a model identification ID code. In this case, the switch which is always operated by the operation stator 106 is the switch 1 corresponding to the outside line button C09.
Therefore, the ID code of the telephone TEL-B (telephone having six external lines) is “001”.

Regarding the mounting state of the key top 102 and the operation stator 106 of the telephone TEL-C,
An analogy can be easily understood from the description of LB. In the telephone TEL-C, assuming that the operation stator 106 is mounted in the through hole 101A of the external line C08, the ID code of the telephone TEL-C (the telephone having three external lines) is “ID”. 010 ".

As described above, if the number of switches 105 that can be used for ID code creation is three, eight types of IDs can be used.
Code can be created. That is, eight types of telephones can be distinguished from each other. In general, if the number of the switches 105 is n, the types that can be identified are 2 n models (the number of ID codes is 2 n).

Next, the control operation of the embodiment will be described with reference to FIG.

The hardware configuration of the system is different from that of the conventional example (FIG. 4) in that the ID code assigning section 25 is not provided and the circuit configuration of the key matrix 22 is used for creating an ID code. The configuration is the same as that shown in FIG. 4 except that a wraparound diode 110 is inserted in series with the contact of the switch 105.

When the system is powered on, the telephone T
In the EL, the sub CPU 21 first sets three switches 105 corresponding to the outside line buttons C07 to C09 of the key matrix 22 (hereinafter, reference numerals 105-7, 1).
05-8 and 105-9. ) Is read to determine the ID code assigned to itself.

When the telephone TEL is the telephone TEL-A (9 external lines), the switch 105
Since -7 to 105-9 are all used for external line selection switches and do not always operate, the sub CPU
21 creates an ID code “000” and transmits the code “000” to the main device ME via the data transmission / reception unit 24.

In the main unit ME, the main CPU 11 receives the ID code "000" via the data transmission / reception unit 12, and the model of the telephone TEL is the telephone T
It recognizes that it is EL-A.

The telephone TEL is connected to the telephone TEL-
In the case of B (the number of external line connections is 6), the switch 105-9 among the switches 105-7 to 105-9 is always operating (ON), and the switches 105-7 and
5-8 is always inactive (off) (it is not turned on because the key top 103 is not attached), so the sub CPU 21 sets the ID code to “001”.
And transmits the ID code “001” to the main device ME in the same manner as described above, and the main CPU 11 of the main device ME determines that the model of the telephone TEL is the telephone TEL-B with six external lines. Recognize that.

Similarly, when the telephone TEL is the telephone TEL-C (the number of external lines is three), the ID code "010" is transmitted from the telephone TEL, and the main unit ME changes the model of the telephone TEL to the three external lines. It recognizes that it is the connected telephone TEL-C.

The model identification control using the above ID code is as follows.
All telephones TE accommodated in the main unit ME at power-on
L is performed in association with the accommodation terminal (connection extension).

Further, if the model identification control is repeated every set time after the telephone is turned on, when the connection of the telephone TEL is changed during the operation of the system, the model of the telephone TEL is changed in the main unit ME. Changes can be determined automatically.

The above embodiment is an example in which the present invention is applied to the identification of a model determined by the number of external lines connected to the telephone. The determined key telephone system can be implemented. For example, when the model of the telephone is set according to the presence or absence of the data transmission function, the switch for changing the data transmission mode can be used for generating the model identification ID code.

[0045]

As described above, according to the present invention,
For telephones that differ in the number of external line connections between models,
A plurality of switches are engaged without external selection switch equipped on the phone for each model, the plurality of switches depending on the model
A switch for actually used is provided an operation button in the middle, Misao
Since the switches that are not used are different because no operation button is provided, a plurality of switches that are not used, for example, three switches are not used.
For example, the switch is always on, always on, always off
Is, these on, since the output the ID code information for the model determined using a combination of off-signal, Hakare is unified printed board provided with such a plurality of all the switches, model identification This eliminates the need for an ID code generation circuit, and allows the circuit mounting space to be eliminated from the printed circuit board, thereby reducing the mounting of circuit components, thereby facilitating the design of the printed circuit board.

Also, a dedicated port for ID code recognition is not required for the CPU in the telephone, and the port conventionally used for ID code recognition can be effectively used for realizing other functions. As the CPU of the telephone, a CPU with a smaller number of ports can be used.

Further, from the viewpoint of the manufacture of telephones, telephones of different models are conventionally handled as different products because the printed circuit board and the number of circuit components mounted on the telephone are different. Although it was necessary to deal with each model from ordering to manufacturing and maintenance, according to the present invention, since the printed board can be shared by all models and the mounted parts can be the same, many of the manufacturing processes are the same, Not only is the work efficiency improved, but work errors are less likely to occur, and the production management becomes easier and better, and the maintainability during operation is also improved.

[Brief description of the drawings]

FIG. 1A is a block diagram of an embodiment of the present invention, and FIG. 1B is a circuit diagram of a key matrix 22 in FIG.

FIG. 2A is a structural sectional view of an external line selection switch portion according to an embodiment of the present invention, and FIG. 2B is a structural sectional view of an ID code creation switch portion according to the embodiment of the present invention.

FIG. 3 is an operation surface layout diagram of a plurality of types of key telephones according to the embodiment of the present invention.

FIG. 4 is a block diagram of a conventional example.

[Explanation of symbols]

ME: Main device TEL (TEL-A to TEL-C): Key telephone C01 to C09: External line button 11: Main CPU 21: Sub CPU 22: Key matrix 101: Housing 102: Operation panel 103: Key top 104: Printed board 105 (105-7 to 105-9) Switch 106 Operation stator

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04Q 3/58 107

Claims (2)

(57) [Claims] 1. A plurality of normally open type external line selection switches
A switch, and an outside line button among the plurality of switches.
The number of switches that are turned on by pressing
In a key telephone system in which a plurality of different types of key telephones are accommodated in the same main unit , a specific plurality of switches among all the switches are always used.
The output signal at the time of
The ID code information for each model,
Of the key telephone connected based on the ID code information.
A key telephone system that distinguishes models . 2. A plurality of switches among a plurality of switches,
If the switch does not have an outside line button,
Te, formed in order to output an always-on signal as the ID code information, the phone housing to correspond to the appropriate switch
Hole with a larger diameter than the hole
2. The key telephone system according to claim 1, wherein a pressing member having a key is inserted from the inside and is always pressed.