JPS6337992B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a time service system that allows the user to know the time of a dialed destination by dialing a telephone.

When making an international call, or when making a call within the same country but where the time differs depending on the region, such as the United States, it is important to know the current time of the person you are calling before starting the call. This is necessary to avoid making calls at times that are inconvenient for the recipient. For this reason, the caller has to calculate the time difference each time he or she makes a call, which is particularly troublesome when making calls to multiple different countries.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a time service system that allows you to know the current time in the area at the time you dial the area code that specifies the area among the dial numbers. purpose.

In the present invention, a list representing the time difference corresponding to the area code of each area is stored in the switching system on the caller side, and this time difference or the time of the destination calculated from this time difference is sent to the calling telephone side. By displaying, the above-mentioned purpose is achieved.

The present invention will be described in detail below, taking as an example a case where a private branch exchange provides time service.

FIG. 1 shows a private branch exchange system. Private branch exchange 1 has multiple telephones (EKT) 2
₁ , 2 ₂ ... are connected. The private branch exchange 1 uses the central office line 3 to establish outgoing connections from the telephones 2 ₁ , 2 _{2 .} . . to the affiliated telephone office. Connections from the affiliated telephone station to telephones 2 ₁ , 2 _{2 .} . . are made using the relay stand (ATT) 4.
This is done manually via .

Now, it is assumed that the private branch exchange 1 of this embodiment is installed in Japan. When making a call to New York from the first telephone ₂₁ , the operator first raises the handset _2A1 of the telephone ₂₁ .

In FIG. 2, which shows the first telephone ₂₁ in detail, when the handset _2A1 is raised by the operator's operation, the switch ₅₁ is turned on. The off-hook signal generated by this is passed through the I/O circuit _6A1 in the control circuit ₆₁ to the CPU (central processing unit) 6.
Based on this information, _{the CPU 6B 1 creates} off-hook information regarding the first telephone 2 ₁ .
This off-hook information is output from the control circuit 6 ₁ via the I/O circuit 6 C ₁ , amplified by the amplifier 7 ₁ , and then sent to the data line 10 ₁ via the hybrid transformer 9 ₁ . data line 10 ₁
The off-hook information sent to the private branch exchange 1 is supplied to the first line circuit (LC) 20 ₁ in the private branch exchange 1 .

The first line circuit ₂₀₁ provided corresponding to the first telephone ₂₁ has _{a configuration} as shown in FIG. Detected through. After amplifying this off-hook information by the amplifier _20B1 , the data control circuit 2
It is transmitted to the data highway 21 via the reception control circuit _20C11 in _0C1 (FIG. 1) at the time slot assigned to the first line circuit ₂₀₁ . The off-hook information sent to the data highway 21 is supplied to the CPU 23A in the control circuit (CC) 23 via the interface circuit 22 (FIG. 1).

When the CPU 23A recognizes that the first telephone ₂₁ is off-hook from the off-hook information sent at a predetermined time slot, the CPU 23A connects a tone source (not shown) to the first line circuit ₂₀₁ via the PCM communication path 24. That is, the dial tone emitted from the tone source is transferred to the first telephone 2 by a time slot switching device (not shown) in the PCM communication path 24.
The time slot assigned to ₁ is replaced.
The signal is then supplied to the PCM code converter 20D ₁ in the first line circuit 20 ₁ , where it is converted into an audible signal. Thereafter, the dial tone from which noise has been removed by the filter circuit 20E ₁ (FIG. 3) is sent to the audio line 25 ₁ via the hybrid transformer 20F ₁ .

The dial tone sent to the first telephone 2 ₁ by the voice line 25 ₁ is detected via the hybrid transformer 27 ₁ as shown in FIG.
It is amplified by the amplifier ₂₈₁ . The signal is then supplied to the handset circuit 29 and output as a dial tone from the handset in the handset _2A1 . Note that when the telephone 2 ₁ is in a state in which it makes a hands-free response, the dial tone sent from the private branch exchange 1 is supplied to the level setting circuit 30 . The dial tone is then amplified by the amplifier 31 and output from the attached loudspeaker 32.

When the operator of the first telephone ₂₁ confirms the dial tone using the handset _2A1 or the speaker 32, the operator of the first telephone 21 confirms the dial tone by using the handset 2A1 or the speaker ₃₂ .
Dial buttons 2 arranged in a matrix of
Using the _B11 , you must dial to make a call to a central office line, followed by the area code, area code, and other party's subscriber number. This dial information input by the operator is sent to the CPU 23A in the private branch exchange 1 in the same manner as the off-hook information described above.

The power supply to the first telephone ₂₁ is as shown in Figure 2.
As shown in FIG. 3, phantom power is supplied from the exchange using the voice line 25 ₁ and the data line 10 ₁ .

The dialing information sent to CPU 23A is first the local dialing code "0", followed by the toll dialing code "0" and the international dialing code "0". Since the operator makes a call to New York in the United States, the dialed digits "11" as the international area code identifying the United States and the dialed digits "212" as the area code identifying New York are then dialed.
The CPU 23 writes dialed numbers one digit at a time into a predetermined storage area in the storage device 23B according to a control procedure (program) stored in the storage device 23B. And the area number “11212” mentioned above
When the area number and storage device 23B arrive,
A reference is made to the table within.

The table is called A table as shown in Figure 4.
Divided into B ₁ and B ₂ tables. In the A table, the number or delay time difference of the B table to be referred to is written in each address "00" to "99" corresponding to the international area code using a total of 16 bits. When indicating the time difference directly in the A table, the most significant bit (MSB) of these codes
is set to "0", and when the time difference is given in another table, the most significant bit is set to "1".

When referring to the address "11" corresponding to the international area code "11" of the United States, the most significant bit is "1".
Therefore, it can be seen that the time difference can be determined by referring to the _B2 table. Similar to the _B1 table, the _B2 table is set with three-digit addresses that correspond to three-digit area numbers, and a delay time difference is written in each address. The contents of the _B2 table corresponding to the area code “212” in New York are the time difference “C”,
The CPU 23A reads this time difference.

On the other hand, a timer 23C in the control circuit 23 generates a pulse at regular intervals to interrupt the CPU 23A. The CPU 23A sets Japan Standard Time by counting the interrupted pulses, and writes this into a predetermined memory area in the storage circuit 23B. This written content is read when the CPU 23A refers to the table. If this read Japan standard time is "T", the CPU23A is "T-C"
Perform the calculation. The result of this calculation becomes the current time in New York. Let this be X ₁ , X ₂ hours Y ₁ , Y ₂ minutes.

The control circuit 23 receives data X ₁ representing this time,
X ₂ , Y ₁ , and Y ₂ are sent from the I/O circuit 23D to the data highway 21 via the interface circuit 22. The data X ₁ , X ₂ , Y ₁ , Y ₂ sent to the data highway 21 are captured by the transmission control circuit 20C ₁₂ (FIG. 3) in the first line circuit 20 ₁ at the assigned time slots. After being amplified by the amplifier 20F ₁ , the signal is sent to the data line 10 ₁ via the hybrid transformer 20A ₁ .

The data X ₁ , X ₂ , Y ₁ , Y ₂ supplied to the first telephone 2 ₁ through the data line 10 ₁ is sent to the I/O circuit 6C ₁ in the control circuit 6 ₁ via the hybrid transformer 9 ₁ and the amplifier 35. The data is input and written to a predetermined memory area in the memory circuit _6D1 . Each phone 2
If the display devices 2C ₁ , 2C ₂ ... provided in ₁ , 2 ₂ ... are composed of 4-digit segments, the CPU
6B ₁ receives data _{X 1 ,} X ₂ , Y ₁ ,
When Y ₂ is read, it is converted to the code corresponding to the character. Then, this converted code is supplied to the display 2C ₁ via the I/O circuit 6E ₁ , and at X ₁ and X ₂
Displays Y ₁ and Y ₂ minutes. Of course, when the caller makes a call within the same country, for example within Japan, the international automatic dialing number "0" is not dialed, so the CPU 23A in the private branch exchange 1 immediately sets the current time without referring to the table in the memory circuit 23B. Read “T” and display it on the display _2C1 .

When the dialing operation corresponding to the area code is performed in this way, the time of the called party is displayed on the display _2C1 , so the operator decides whether or not to make a call during the minimum pause of several seconds. . If the user wishes to make a call, the station number and the other party's subscriber number are input in sequence. If you wish to give up on making a call, you can simply return the handset _2A1 to its original position before or during these dial operations.

Note that there is a data control circuit 41 in the private branch exchange 1.
A, a central office line trunk circuit (COT) 41 consisting of a PCM code converter 41B, a central office line interface 41C, etc., and a data control circuit 42A;
An operator trunk circuit (OPT) 42 consisting of a PCM code converter 42B etc. is provided.
Since they are not directly related to the present invention, their explanation will be omitted.

As described above, according to the present invention, the time of the other party is displayed immediately when the area number is dialed, so it is possible to easily know the time of each country and region for purposes other than making a telephone call. In addition, since it is possible to know the time on the caller's side, the operator can always confirm the accurate time.

Although three tables are prepared in the embodiment of the present invention, the number of tables can be reduced if the destinations to which international automatic calls are made are limited. In some cases, it is also possible to provide time services using the memory circuit or CPU within the telephone. Furthermore, if there are a small number of destinations for international automatic dialing, it is also possible to provide a clock mechanism corresponding to these destinations and have the display display the time of these destinations based on this.
It goes without saying that the display can also directly display the time difference instead of the time.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a system configuration diagram showing the outline of a private branch exchange system, FIG. 2 is a block diagram of a telephone set, FIG. 3 is a block diagram of a line circuit, and FIG. 4 is a block diagram of a telephone set. The figure is a configuration diagram of a table stored in a storage device within a private branch exchange. 1... Private branch exchange, 2... Telephone, 2B... Dial button, 2C... Display, 23A...
CPU, 23B...memory circuit, 23C...timer.

Claims (1)

[Scope of Claims] 1. In a telephone switching system having a telephone equipped with a display for displaying time information and an exchange, the telephone is provided with means for inputting the area code of the called party, means for receiving the area code of the called side inputted in the area code of the called side, means for obtaining time information of the called side corresponding to the received area code of the called side, and means for obtaining the time information of the called side that is obtained. means for displaying on the display,
A time service system characterized in that the time information of the region of the called side corresponding to the received area code of the called side is displayed on the display. 2. The means for obtaining the time information of the called party includes a memory circuit that stores time differences from the area where the calling party's telephone is installed in correspondence with various area codes of the called party, and a clock. a first time creation means for creating a current time in the area where the calling party's telephone is installed by a mechanism; and a calling party stored in the storage circuit based on the received area code of the called party. and the called side, and create a current time in the corresponding area of the called side from the calculated time difference and the current time of the calling side created by the first time creation means. 2. The time service system according to claim 1, further comprising: time creation means for displaying the current time in the area of the called side corresponding to the received area code. 3. The means for obtaining the time information of the called side includes a storage circuit that stores time differences between the calling side and the area where the calling side telephone is installed corresponding to various area codes of the called side, and a receiver. means for determining the time difference between the calling side and the called side stored in the storage circuit based on the area code of the called side that has been received; The time service system according to claim 1, characterized in that the time difference with the calling region is displayed.