JPH06276144A - Digital cordless telephone system - Google Patents

Abstract

PURPOSE:To enable a user to select a required mode and to improve availability by providing a means for selecting one of the area modes in an area where a line connection area is superimposed on a public service area. CONSTITUTION:When a calling operation is executed inside the line connection area 10 through the use of the portable machine 1 of a digital cordless telephone system, it becomes a call through the use of a personal base station 11 connected to a subscriber's line 12 and it becomes the call through the use of a public base station 21 connected to an exclusive line 22 at the time of the calling operation inside the public service area 20. When the calling operation is executed inside the superimposing area 30, it becomes the call by the mode selected by the mode change-over switch 6 of the portable machine 1 so that the corresponding base station 11 or 12 is used.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital cordless telephone device capable of waveform transmission by a telephone line compatible modem.

[0002]

2. Description of the Related Art A digital cordless telephone device in Japan is called PHP (Personal HandyPhone).
Specific services include home (individual), business,
Three public services are envisioned. For example, at home (individual), it is used in the same way as a cordless telephone that is currently popular. PBX (Private Branch Exchang)
e: Use as a private cordless telephone to connect to a private branch exchange. Furthermore, in the outdoors such as in front of the station or in the shopping district,
Although the service area is limited, it is used for a public cordless telephone as a mobile telephone similar to the currently offered cellular telephone. Hereinafter, in this specification, business services and public services are collectively referred to as a public service, this call mode is tentatively referred to as a public service mode, and the range in which this service can be received is tentatively referred to as a public service area.

Further, the digital cordless telephone device is
Since the digital system is adopted, communication quality can be improved, high confidentiality performance can be obtained, and waveform transmission of a telephone line-compatible modem is possible. Therefore, not only public service but also individual It has a mode in which it is possible to make a call directly to the subscriber telephone line, and this enables personal service.
Hereinafter, in this specification, this call mode is referred to as a line connection mode, and the range in which this service can be received is tentatively referred to as a line connection area.

FIG. 5 is a perspective view showing a configuration of a portable device of such a digital cordless telephone device. In the figure, 1 is a portable device main body, 2 is a mouthpiece, 3 is an earpiece, and 4 is a display section. Reference numeral 5 is a dial key.

FIG. 6 is a diagram for explaining the operation area. In the figure, 10 is a line connection area, 11 is a personal base station, 12 is a normal subscriber telephone line connected to the base station 11, and 20. Is a public service area, 21 is a public base station, 22 is a dedicated line connected to the base station 21, and 30 is a superposition area in which the line connection area 10 and the public service area 20 are superposed.

Further, the digital cordless telephone device is
Taking PHP as an example, the frequency band used is 1900M.
Hz band, access method is TDMA / TDD, voice coding method is 32 kbps-ADPCM, number of channels is 4, carrier interval is 300 kHz, modulation method is QPSK, transmission output is 10 mW on average to 80 mW at peak, frame length is 5 ms, transmission speed. It is defined as 384 kbps.

Next, the operation will be described. When the portable device 1 has the public service mode and the line connection mode described above, when the call origination operation is performed in the line connection area 10, the line connection mode using the personal base station 11 connected to the subscriber line 12 is issued. When a call is made and a calling operation is performed in the public service area 20, a call is made in the public service mode using the public base station 21 connected to the dedicated line 22. This operation program is shown in the flowchart of FIG.

Further, when a call is made in the superposition area 30 in which the line connection area 10 and the public service area 20 are superposed, in the conventional device, a normal subscriber line is automatically used for the purpose of selecting a cheap call charge. The personal base station 11 connected to 12 is used as a call in the line connection mode, or the base station with the stronger received radio wave is used as shown in the flowchart of FIG. 8 for the purpose of improving the call quality. The call mode is uniquely determined on the device side, such as a device that makes a call in the specified mode.

[0009]

In the conventional digital cordless telephone system as described above, when a call is made in a superposition area in which the line connection area and the public service area are superposed, it is uniquely decided by the apparatus. There is a problem that the user cannot freely select because the mode is decided.

For example, when a plurality of portable devices are combined with one personal base station, if one portable device uses the personal base station, the other portable device will change the personal base station. Since it cannot be used, the digital cordless telephone device as described above cannot communicate. In addition, when using public service mode on a mobile device of a company office, etc. and making a call on a private basis, there is a request to prevent the company office from being charged, but the device automatically There was a problem in that a personal base station of a company office was selected and a fee was charged.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a digital cordless telephone apparatus which is suitable for a use situation and which can select a line connection mode or a public service mode.

[0012]

According to the digital cordless telephone apparatus of the present invention, in a superposition area in which a line connection area and a public service area are superposed, either a line connection mode or a public service mode is selected by the user. A means for selecting is provided.

Further, this selection is performed by switching between the first standard mode in which the line connection mode has priority and the public service mode in the superposition area.

Further, this selection is made by switching between the second standard mode in which the stronger received radio wave is prioritized and the public service mode in the superposition area.

Further, this selecting means is switched by a mode changeover switch provided in the portable device.

The selecting means is performed by using the dial function provided in the portable device.

Further, the portable device is provided with a display means for displaying the fact that it is a superposition area.

[0018]

The digital cordless telephone device according to the present invention having the above-mentioned structure enables the user to select a desired call mode even in the overlapping area. As a prior art relating to mode switching, those relating to an analog type telephone are disclosed in Japanese Unexamined Patent Publication No. Hei 3-1621 “Cellular Cordless Telephone”, Japanese Unexamined Patent Publication No. Hei 3-961.
No. 34 publication, "Wireless telephone" and the like.

[0019]

EXAMPLES Example 1. An embodiment of the present invention will be described below with reference to the drawings. 1 is a perspective view showing the configuration of a portable device of a digital cordless telephone device showing Embodiment 1 of the present invention, and FIG. 3 is a schematic block diagram of the portable device of a digital cordless telephone device. In FIGS. 1 and 3, 1 is a main body of the portable device, 2 is a mouthpiece with a built-in microphone 44, 3 is an earpiece with a built-in receiver 45, 4 is a display unit, 5
Is a dial key, 6 is a mode selector switch, 40 is an antenna, 41 is an RF / IF circuit, 42 is a baseband circuit,
Reference numeral 43 is a CPU (microcomputer) that controls the whole.

Next, the operation will be described with reference to the flowchart of FIG. As shown in FIG. 6, the line connecting area 10 is used by using the portable device 1 of the digital cordless telephone device.
If the calling operation is performed in the line, the call is made in the line connection mode using the personal base station 11 connected to the normal subscriber line 12, and if the calling operation is performed in the public service area 20, 5 to 8 that the call is made in the public mode using the public base station 21 connected to the dedicated line 22.
It is similar to the device shown in FIG.

When a calling operation is performed within the superposition area 30 shown in FIG. 6, a calling is made in the mode selected by the mode changeover switch 6 of the portable device 1, and the base station 11 corresponding to this mode. Alternatively, the base station 21 is used. For example, when the mode changeover switch 6 of the portable device 1 is set to the public service mode and the calling operation is performed in the overlapping 30 area, the microcomputer 43 of the portable device 1 detects the state of the mode changeover switch 6. Recognizing that this is the public service mode, the microcomputer 43 performs the call operation in the public service mode, and the call using the public base station 21 connected to the dedicated line 22 becomes possible.

Example 2. In the first embodiment, the mode changeover switch 6 is a switch for switching between the line connection mode and the public service mode. However, in the superposition area 30, the line connection mode is prioritized (tentatively called the first standard mode) and the public mode. The same effect can be obtained as a switch for switching to the service mode.

That is, when a calling operation is performed in the line connection area 10 using the portable unit 1 of the digital cordless telephone device, the line using the personal base station 11 connected to the normal subscriber line 12 is used. When a call is made in the connection mode and a call is made in the public service area 20, the leased line 2
A public service mode call is made using the public base station 21 connected to No. 2. Further, when a call is made in the superposition area 30, if the first standard mode is selected by the mode changeover switch 6, the line connection mode is automatically set, and the public service mode is selected by the mode changeover switch 6. If so, it operates so that a call is made in the public service mode using the public base station 21 connected to the dedicated line 22.

Example 3. In addition, the mode switch 6
Then, in the superposition area 30, the same effect can be obtained by switching between the mode in which the stronger received radio wave is prioritized (tentatively called the second standard mode) and the public service mode.

Example 4. Further, although the mode changeover switch 6 is provided to change the mode in the above-mentioned embodiment, the same effect can be obtained as a device for changing over the mode using the existing dial function (numeric keypad / shift key). That is, when the calling operation is performed by simply pressing the call button in the line connection area 10 using the portable device 1 of the digital cordless telephone device, the personal base station 11 connected to the normal subscriber line 12 is used. When a call is made in all the line connection modes and the call operation is performed by simply pressing the call button in the public service area 20, the public base station 21 connected to the private line 22 is used to make the public service mode. It becomes a call. In addition, when a calling operation is performed by simply pressing the call button in the superposition area 30, the normal subscriber line 12 is automatically
Although the call is made in the line connection mode using the personal base station 11 connected to, the call is made in the public service mode when the call button is pressed after the shift key is pressed.

Example 5. FIG. 2 is a perspective view of a portable device for explaining the fifth embodiment, and in the figure, 7 is an indicator lamp for displaying the portable device 1 when it is in the superposition area 30. That is, according to the above-mentioned invention, the overlapping area 3
Since 0 allows the user to select the call mode,
When the portable device 1 is in the superposition area 30, this is displayed by the indicator lamp 7. The display may be made on the existing display unit 4, and the display is not limited to the visual display, and other display means may be used.

[0027]

As described above, the digital cordless telephone device of the present invention is configured so that the user can select the call mode desired in the superposition area, so that the user-friendly device can be obtained.

[Brief description of drawings]

FIG. 1 is a perspective view showing an external configuration of a portable device for explaining a first embodiment of the present invention.

FIG. 2 is a perspective view showing an external configuration of a portable device for explaining a fifth embodiment of the present invention.

FIG. 3 is a schematic block diagram of a portable device of the present invention.

FIG. 4 is a flowchart for explaining the operation of the first embodiment.

FIG. 5 is a perspective view showing an external configuration of a conventional portable device.

FIG. 6 is a diagram for explaining an operation area of a portable device.

FIG. 7 is a flowchart for explaining the operation of the conventional device.

FIG. 8 is a flowchart for explaining an example of the operation of the conventional device.

[Explanation of symbols]

 1 portable device 6 mode selector switch 7 superimposition area indicator 10 line connection area 11 personal base station 12 subscription line 20 public service area 21 public base station 22 dedicated line 30 superposition area

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[Procedure amendment]

[Submission date] August 20, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 1

[Correction method] Change

[Correction content]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] 0002

[Correction method] Change

[Correction content]

[0002]

2. Description of the Related Art A digital cordless telephone device in Japan is called PHP (Personal HandyPhone).
Specific services include home (individual), business,
Three public services are envisioned. For example, at home (individual), it is used in the same way as a cordless telephone that is currently popular. PBX (Private Branch Exchang)
e: Use as a private cordless telephone to connect to a private branch exchange. Furthermore, in the outdoors such as in front of the station or in the shopping district,
Although the service area is limited, it is used for a public cordless telephone as a mobile telephone similar to the currently offered cellular telephone. Hereinafter, in this specification, business services and public services are collectively referred to as a public service, this call mode is referred to as a public service mode, and the range in which this service can be received is referred to as a public service area.

[Procedure 3]

[Document name to be amended] Statement

[Name of item to be corrected] 0003

[Correction method] Change

[Correction content]

Further, the digital cordless telephone device is
Since the digital system is adopted, communication quality can be improved, high confidentiality performance can be obtained, and waveform transmission of a telephone line-compatible modem is possible. Therefore, not only public service but also individual It has a mode in which it is possible to make a call directly to the subscriber telephone line, and this enables personal service.
Hereinafter, in this specification, this call mode is referred to as a line connection mode, and the range in which this service can be received is referred to as a line connection area.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction content]

Further, the digital cordless telephone device is
Taking PHP as an example, the frequency band used is 1900M.
Hz band, access method is TDMA / TDD, voice coding method is 32 kbps-ADPCM, number of channels is 4, carrier interval is 300 kHz, modulation method is π / 4 shift Q.
PSK, transmission output average 10mW to peak 80m
W, frame length 5 ms, transmission rate 384 kbps.

Claims (6)

[Claims] 1. In a digital cordless telephone apparatus capable of waveform transmission of a normal subscriber telephone line-compatible modem, a call mode in which a normal subscriber telephone line is used in a portable device is tentatively called a line connection mode. The range in which the mode can be used is tentatively called a line connection area, the call mode using a private line such as PBX (Private Branch Exchange) is tentatively called a public service mode, and the range in which this public service mode can be used is tentatively called a public service area. In such a case, the digital cordless telephone device is provided with a selection unit that allows the user to select either the line connection mode or the public service mode in the superposition area where the line connection area and the public service area overlap. 2. A first standard mode in which the line connection mode is prioritized is provided in the superposition area, and the selection of the mode by the selecting means is performed by switching between the first standard mode and the public service mode. A digital cordless telephone device according to claim 1, wherein the digital cordless telephone device is a digital cordless telephone device. 3. In the superposition area, a second standard mode in which stronger received radio waves are prioritized is provided, and the mode is selected by the selecting means by switching between the second standard mode and the public service mode. Claim 1 characterized by the above.
A digital cordless telephone device according to the above item. 4. The digital cordless telephone device according to claim 1, wherein the selecting means is operated by using a mode changeover switch provided in the portable device. 5. The digital cordless telephone device according to claim 1, wherein the selection means is operated by using a dial function provided in advance in the portable device. 6. The display device according to claim 1, further comprising display means for displaying that the portable device is in the overlapping area when the portable device is in the overlapping area. The digital cordless telephone device described in 1.