JPS59156061A - Data transmitting and receiving system - Google Patents

Abstract

PURPOSE:To simplify the additional provision of a terminal device to a telephone terminal device by providing a means identifying the presence of the terminal device provided additionally to the telephone terminal device, transmitting and receiving a transmitted and received data to the terminal device when the additional provision of the terminal device is detected and processing the transmitted and received data when the additional provision of the terminal device is not detected. CONSTITUTION:An interface circuit 19 supervises whether or not a terminal device 3 is connected and informs the result of the said supervision to a processor 130. When the non-connection of the terminal device 3 from the interface circuit 19 is informed to the processor 130, the processor 130 transmits a data set to a shift register 131 to a modulation and demodulation circuit 17 and after the processor 130 stores the data transmitted from the modulation and demodulation circuit 17 to the shift register 131, the processor 130 applies required processing to the said data. On the other hand, when the connection of the terminal device 30 is informed from the interface circuit 19, after the processor 130 stores once the data transmitted from the modulation and demodulation circuit 17 to the shift register 131, the processor 130 transmits the data to the terminal device 3 via the interface circuit 19.

Description

Detailed Description of the Invention: fat Technical Field of the Invention The present invention relates to telephone terminals, and more particularly to a data transmission/reception system that allows easy installation of terminal devices that transmit and receive large amounts of data.

(bl) Prior Art and Problems Figure 1 is a diagram showing an example of a conventional data transmission/reception system. It has the ability to send and receive data via.

The telephone terminal 1 includes a telephone circuit 11 including a hook switch and a handset, a keyboard 12 equipped with numeric buttons from ■ to 0 and various function buttons, and a processor 1.
a scanning circuit 14 that scans the keyboard 12 based on the control of the processor 13 and detects the operating states of the various buttons provided thereon; and a dial that sends out dial pulses corresponding to the number buttons operated on the keyboard 12 based on the control of the processor 13. A pulse generating circuit 15, a memory circuit 16 for temporarily storing data input manually from the keyboard 12, data transmitted from the modulation/demodulation circuit 17, etc., and a memory circuit 16 that modulates the data transmitted from the processor 13 to a frequency within the voice band. It is equipped with a modulation/demodulation circuit 17 that sends out to the telephone line 2 and demultiplexes the modulated data that arrives from the telephone line 2 and transmits it to the processor 13, and a display circuit 18 that displays the data transmitted from the processor 13. ing. Note that the amount of data that can be sent and received by the Den/Kintu terminal 1 depends on the input speed from the keyboard 12 or the number display ability of the display circuit 18.
Therefore, it is impossible to transmit and receive a large amount of data at a high speed, and for this purpose, it is necessary to provide a dedicated terminal device 3 independently of the telephone terminal l. The terminal device 3 also requires a dedicated telephone circuit 5 and a modem circuit 4 in order to connect to the telephone line 2.
It is necessary to attach

As is clear from the above explanation, in the conventional data sending/receiving system, in order to send and receive a large amount of data that exceeds the data sending/receiving function of the telephone terminal 1, it is necessary to The device 3, the modulation/demodulation circuit 4, and the telephone circuit 5 were provided, and the telephone line 2 had to be switched and connected whenever necessary.

(C1 Object of the Invention The object of the present invention is to eliminate the drawbacks of the conventional data transmission/reception system as described above and to realize a means for simplifying the installation of a terminal device in conjunction with a telephone terminal.

+d+ Structure of the Invention This object is to provide a telephone terminal equipped with a data transmission/reception function with means for identifying the presence or absence of a terminal device attached to the telephone terminal, and when the means detects that the terminal device is attached. is achieved by transmitting and receiving data to and from the terminal device without processing the data to be transmitted and received, and processing the data to be transmitted and received when the means does not detect the presence of the terminal device.

[e) Examples of the invention Hereinafter, one embodiment of the present invention will be explained using a concave curve.

FIG. 2 is a diagram showing a data transmission/reception system according to an embodiment of the present invention. Note that the same reference numerals refer to the same objects throughout the plan. In FIG. 2, the telephone terminal 10 is provided with an interface circuit 19 for installing the terminal device 3 in addition to the various circuits constituting the telephone terminal 1 shown in FIG. , a processor 130 having a built-in shift register 131 for temporarily storing data transmitted and received via the variable FF111 circuit 17 is provided. In FIG. 2, a terminal device 3 attached to a telephone terminal 10 has an interface circuit I in a telephone terminal 1σ.
Connected to 9. The interface circuit 19 is connected to the terminal device 3
is connected, and notifies the processor 130 of the monitoring result. When the processor 130 is notified of the disconnection of the terminal device 3 from the interface circuit 19, the processor 130 sends the data set in the shift register 131 to the modulation/demodulation circuit 1is17 similarly to the processor 13 in FIG. After the data transmitted from the shift register 131 is accumulated, the data is subjected to necessary processing. For example, when a line release signal is received, an instruction to open the loop for the telephone line 2 is transmitted to the telephone circuit 11, and when a retransmission request signal is received, the data accumulated in the storage circuit 16 is transferred to the modulation/demodulation circuit. 17
If the received data is to be displayed, it is transmitted to the display circuit 18, and processing based on the analysis is executed. On the other hand, interface circuit 1
9 that the terminal device 3 is connected, the processor 130 first supplies the data transmitted from the modulation/demodulation circuit 17 to the shift register 131, and then transmits the data to the terminal device 3 via the interface circuit 9. , and terminal device 3
The post-modification/reconstruction circuit 1 temporarily stores the data transmitted from the interface circuit 19 in the shift register 131.
7. During this time, the processor L30 does not perform any analysis or processing on the data stored in the shift register 131. In such a state, the terminal device 3 is able to send and receive large amounts of data as if it were directly connected to the telephone line 2, and all line opening and other processing can be deciphered by the device 3 and performed as necessary. For example, a request is made to operate the telephone terminal IO.

As is clear from the above description, according to this embodiment, the telephone terminal 10 automatically switches data processing by the processor 130 or data transfer to the terminal device 3 depending on whether the terminal device 3 is installed or not. It becomes possible to easily use the telephone terminal "0" and the terminal device 3 according to the quantity.

Note that FIG. 2 is merely one embodiment of the present invention, and the configuration of the telephone terminal 10, for example, is not limited to that shown in the figure, and many other modifications may be considered. In either case, the effects of the present invention remain the same.

(fl) Effects of the Invention As described above, according to the present invention, it is possible to simplify the installation of a terminal device in the telephone terminal.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an example of a conventional data transmission/reception system, and FIG. 2 is a diagram without the data transmission/reception system according to an embodiment of the present invention. In the figure, 1 and 10 are telephone terminals, 11 and 5
12 is a telephone circuit, 12 is a keyboard, 13 and 130 are processors, 14 is a scanning circuit, 15 is a dial pulse generation circuit, 16 is a storage circuit, 17 and 4 are modulation/demodulation circuits,
18 is a display circuit, 19 is an interface circuit, 2 is a telephone line, and 3 is a terminal device.

Claims (1)

[Claims] A telephone terminal equipped with a data transmission/reception function is provided with means for identifying the presence or absence of a terminal device attached to the telephone terminal, and when the means detects the presence or absence of the terminal device, processes data to be transmitted and received. 1. A data transmission/reception method, characterized in that the data is transmitted to and received from the terminal device without any modification, and when the means does not detect the presence of the terminal device, the data transmitted and received is processed.