JPH08228220A - Digital cordless telephone device - Google Patents

Abstract

(57) [Summary] [Purpose] The system can be configured at low cost, and it is not necessary to immediately respond to an incoming call, and when necessary, it is possible to respond immediately. [Structure] The mobile station 2 employs a TDMA / TDD system for performing communication by time division multiple access and time division bidirectional transmission.
However, when an incoming call is received from the base station 1, the caller's telephone number is extracted from the call setting message and stored in the temporary storage memory 13 without sounding the ringing tone, and the incoming call is stored in the display unit 12. indicate. When the user of the mobile station 2 sees the display and presses the call key from the operation unit 11, the stored number is called.

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, and more particularly to a mobile station capable of ringing without incoming call.

[0002]

2. Description of the Related Art Conventionally, in this type of cordless telephone device, when an incoming call is received from a base station to a mobile station, a ringing tone sounds to notify the incoming call. However, the ringtone may not be heard in a noisy place, and the ringtone may be annoying at important meetings, business meetings, concerts, etc. Therefore, the ringtone can be switched so as not to ring.

FIG. 4 shows a typical example of the conventional ringing-free incoming call system of this type. Method 1 is a method of using a vibrator and notifying the user of an incoming call by vibrating.
The user can detect an incoming call by vibrating the vibrator by connecting the vibrator to the mobile station in advance and holding the mobile station at a place such as a pocket that is in close contact with the human body. The method 2 is a method in which the incoming call is turned off and the incoming call LED visually notifies the user of the incoming call. The user can detect the incoming call by blinking the incoming call LED by turning off the incoming call by operating the key of the mobile station in advance. Method 3 is a method of notifying the user that there is an incoming call by recording the call in the mailbox. The user sets the call recording setting by operating the key of the mobile station in advance, so that the call content is recorded in the mailbox without making the mobile station receive the call, and the key operation of the mobile station is performed at a convenient time. You can hear the contents of the call.

[0004]

However, the above-mentioned conventional method has the following problems. First of all, in the method 1, a vibrator is required and becomes expensive, and it is necessary to respond on the spot immediately when an incoming call arrives. In method 2, the means to know the incoming call is the incoming LE.
Since it was only D, it was necessary to keep the mobile station at a place where the eyes could always reach, and similarly to the method 1, when the call arrived, the mobile station had to answer immediately. In method 3, the mobile station itself does not receive an incoming call, so you can listen to the contents of the call at a convenient time. However, if you do not know the telephone number, you need to call again to answer the call partner. Had to find out his phone number and could not answer immediately. In addition, the system was expensive because it required a mailbox.

The present invention solves such a conventional problem and allows the system to be inexpensively constructed.
It is an object of the present invention to provide a digital cordless telephone device of a ringing-free incoming call system, which does not require immediate response to an incoming call, and can respond immediately when needed.

[0006]

In order to achieve the above object, the present invention provides a digital cordless telephone apparatus composed of a base station and a mobile station, in which the mobile station makes a call without making a ring tone when receiving a call. Means for storing the person's telephone number,
It is provided with means for displaying that an incoming call has been received and that the other party's number has been stored, and means for transmitting the stored other party's number by operating the keys on the operation unit.

[0007]

Therefore, according to the present invention, since the mobile station stores the caller's telephone number without sounding a ring tone when an incoming call is received, it is not necessary to immediately respond to an incoming call, and the mobile station can be operated from the operation unit. Since the stored other party's number is transmitted by the key operation of, the trouble of checking the telephone number can be saved, and the user can respond immediately when necessary. Furthermore, since no vibrator or mailbox is required, the system can be constructed at low cost.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the configuration of an embodiment of the present invention. In FIG. 1, 1 is a base station, 2 is a mobile station wirelessly connected to the base station 1, and both wirelessly communicate with each other by the TDMA / TDD system. In the mobile station 2, reference numeral 3 is a radio circuit, which transmits and receives data such as voice signals and control signals to and from the base station 1 while being instructed by the radio control unit 4 on the frequency and the transmission / reception timing. Reference numeral 3a is a synthesizer, which is built in the radio circuit 3 and generates a frequency designated by the radio control unit 4. A channel codec unit 5 assembles and disassembles data transmitted and received on the wireless communication channel and control channel.
A call control unit 6 converts an analog voice signal into a digital signal and transfers the digital signal to the channel codec unit 5, and converts digital data received from the channel codec unit 5 into an analog voice signal and outputs the analog voice signal. Reference numeral 7 is a receiver that outputs an analog voice signal as voice, and 8 is a microphone that converts voice into an analog signal. Reference numeral 9 denotes a control unit composed of a microcomputer or the like, which gives a control instruction for the entire hardware. A memory unit 10 stores a control program, a system call code, and the like. Reference numeral 11 is an operation unit provided with various keys, and 12 is a display unit provided with a liquid crystal display device. Reference numeral 13 is a temporary storage memory for storing the telephone number of the partner telephone received by the mobile station 2 from the base station 1.

Next, the operation of the above embodiment will be described.
FIG. 2 (a) shows the other party number storing operation at the time of an incoming call in the above embodiment, and (b) shows the calling operation to the stored other party number. In FIG. 2 (a), when the other party number is stored in the mobile station 2, the other party number storage is set by operating a special key for storing the incoming call from the operation unit 11, and the ring tone is turned off. To set a ringing-free incoming call (steps 21 and 22). The mobile station 2 waits for an incoming call in this state, and if there is an incoming call (step 23), after making a wireless connection with the base station 1, the other party's telephone number is extracted from the call setting message and temporarily stored in the memory. 13 is stored (step 24), and the display section 12 displays that the incoming call is stored (step 25).

In case of transmitting the stored party number, FIG.
As shown in (b), after confirming that there is an incoming call storage on the display unit 12 (step 26), the special key for searching is operated from the operation unit 11 (step 27). As a result, the control unit 9 sequentially calls the telephone numbers stored as incoming calls from the temporary storage memory 13 and displays them on the display unit 12. The mobile station user performs a dialing operation by pressing a key for dialing from the operation unit 11 while viewing the other party's number that requires a response while looking at it (step 2).
8). When the other party responds and normally terminates the call (step 29), the corresponding number in the temporary storage memory 13 is erased (step 30), and the standby state is entered. If the other party does not respond, try the calling operation again after a while, or search for another party number and perform the calling operation.

FIG. 3 (a) shows a signal sequence between the base station 1 and the mobile station 2 at the time of receiving an incoming call with the opposite party number stored in this embodiment. When there is an incoming call from the base station 1 to the mobile station 2 and the channel of the mobile station 2 is free, both are wirelessly connected. Next, when a call setup message (a signal prompting the start of communication) is sent from the base station 1, the channel codec unit 5 of the mobile station 2 sets the calling number (the telephone number of the other party) included in the call setup message. Stored in the temporary storage memory 13,
A calling party number storage message (a signal for notifying the base station that communication is not performed because the calling party number is stored) is sent to the base station 1, and the calling party number storage confirmation message (permission for the calling party number storage message is issued from the base station 1 Signal),
A call disconnection and a wireless disconnection sequence are performed, and the device enters a standby state. On the other hand, in the sequence of the normal incoming call, as shown in FIG. 3B, after the call is set up, the ring tone is transmitted from the base station 1, and when the mobile station 2 responds to the ring tone, the base station A response confirmation is sent from 1 and the call is started.

[0012]

As described above, according to the present invention, since the mobile station stores the caller's telephone number without sounding a ring tone when receiving a call, it is not necessary to immediately respond to the call.
In addition, since the mobile station sends the stored other party's number by key operation from the operation unit, it is possible to save the trouble of checking the telephone number and to respond immediately when necessary.
Since no vibrator or mailbox is required, the system can be inexpensively constructed.

[Brief description of drawings]

FIG. 1 is a schematic block diagram showing the configuration of a mobile station of a digital cordless telephone device according to an embodiment of the present invention.

FIG. 2 (a) is a flow chart showing an operation of storing a called party number in a mobile station of the same apparatus. FIG. 2 (b) is a flow chart showing an operation of making a call to a stored party number in a mobile station of the same apparatus.

FIG. 3 (a) is a sequence diagram at the time of receiving an incoming call with a partner number stored between the base station and the mobile station of the same device, and (b) is a sequence diagram of normal reception between the base station and the mobile station of the device.

FIG. 4 is a list diagram showing a conventional non-ringing incoming call system.

[Explanation of symbols]

 1 Base Station 2 Mobile Station 3 Radio Circuit 3a Synthesizer 4 Radio Control Section 5 Channel Codec Section 6 Call Control Section 7 Receiver 8 Microphone 9 Control Section 10 Memory Section 11 Operation Section 12 Display Section 13 Temporary Storage Memory

Claims (2)

[Claims] 1. A digital cordless telephone apparatus composed of a base station and a mobile station, wherein the mobile station stores a caller's telephone number without ringing a ring tone when receiving a call.
A digital cordless telephone device comprising means for displaying that an incoming call has been received and that the other party's number has been stored, and means for transmitting the stored other party's number by operating a key from an operating section. 2. The digital cordless telephone device according to claim 1, wherein the mobile station stores a plurality of partner numbers and sequentially displays the plurality of partner numbers stored by a key operation from the operation unit.