JPH05260208A - Telephone set with data communication function - Google Patents

Abstract

PURPOSE:To display the communication state before a power failure at the restoration of power failure in the telephone set making data communication with a center equipment. CONSTITUTION:When a prescribed operation is implemented during data communication, prescribed data representing a current communication state are stored in a power failure memory in an SRAM 4 backed up by a battery E. Or prescribed data are stored periodically in the power failure memory. Then the power failure memory is referenced at restoration of a power supply after a power failure or at usual application of power, and when the presence of the prescribed data is discriminated, the prescribed data are displayed on an LCD unit 9b in a display section 9. As a result, the communication state before power failure is informed without use of a power failure detection circuit and the telephone set is made small and economical.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telephone device with a data communication function which has a call function and performs data communication with a connected center device.

[0002]

2. Description of the Related Art A conventional telephone device having a data communication function of this kind is provided with a CPU and a power failure detection circuit, and when a power failure occurs in data communication with a center device, the power failure detection circuit detects the power failure. It is transmitted to the CPU. The CPU receives the notification of the power failure, stores the fact, and notifies the user of the power failure during the data communication when the power failure is restored.

[0003]

A conventional device of this kind is equipped with a power failure detection circuit for detecting a power failure and transmitting it to the CPU, so that it is difficult to downsize the apparatus. There was a problem that the device could not be economically constructed.

[0004]

In order to solve such a problem, the present invention provides a storage means for storing predetermined data indicating a current communication state in a memory according to a predetermined operation during normal communication, and turning on a power source. At the time of recovery or at the time of restoration, it is provided with a determination means for determining the presence or absence of the predetermined data, and a display means for displaying the predetermined data on a display when the presence of the predetermined data is determined by the determination means.

[0005]

When the predetermined operation is performed during the data communication, the predetermined data indicating the current communication state is stored in the memory, and when the power is restored after the power failure or the normal power is turned on, it is determined that the predetermined data exists. This predetermined data is displayed on the display.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of a telephone device with a data communication function according to the present invention. In the figure, 1 is a CPU that controls the entire apparatus, 2 is a ROM that stores programs, 3 is DRAM, 4 is SRAM that stores various data, 5 is a clock section, 6 is a memory card I /
An F section, 7 is a memory card including a ROM 7a, a RAM 7b, and a battery 7c for holding data stored in the RAM 7b, and 8 is a printer I / F section. Further, 9 is a display unit including an LCD control unit 9a and an LCD unit 9b, 10 is a key unit, 11 is a call unit, and 12 is a unit.
Is a communication unit including a modem (not shown) for performing data communication. Further, E is a battery for holding the data stored in the SRAM 4 at the time of power failure, SP is a speaker, HS is a handset, L is a telephone line, and SW is a switch for switching the telephone line L to one of the call section 11 or the communication section 12. is there.

A telephone device having such a data communication function is usually connected to a center device such as a bank and performs procedures such as deposit and withdrawal. That is, in order to perform a deposit / withdrawal procedure, a user first connects to the center device and calls the center device, and the center device responds to the call. Next, when a predetermined key operation is performed, the keyword is transmitted to the center device. The center device receives the keyword transmitted from the telephone device and, when the keyword matches the keyword registered in advance, returns predetermined data to the telephone device side.
During such data communication with the center device, the telephone device saves the data communication operation such as which bank and what kind of deposit / withdrawal procedure is performed in a predetermined area in the SRAM 4 in the periodic interruption process. At the same time, the communication data at this time is also saved. When the device is energized, the contents of the SRAM 4 are referred to, and if it is determined that the data communication was performed before the power failure, this is displayed on the display unit 9.

Next, FIG. 2 is a flow chart of the CPU 1 in the telephone device showing the operation of storing the communication state during such data communication and starting the energization. First, the flow chart of FIG. 2A for storing the data communication state will be described. That is, the CPU 1 periodically executes the timer interrupt processing by the interrupt signal generated by the built-in timer. When the timer interrupt occurs, the CPU 3 refers to the contents of each memory such as the DRAM 3 and the SRAM 4 in step 200. It is determined whether or not communication is currently being performed with the center device.
In this case, if the communication is being performed with the center device, the communication state indicating the name of the communication center, its number, payment, etc. and the date information from the clock unit 5 at this time are saved in the power failure area in the SRAM 4 (step 201). ). Thus, during data communication, the contents of the communication state are regularly updated and stored in the power failure area. When a power failure occurs at such time, the CPU 1 stops its operation but is backed up by the battery E SRAM 4 The contents of the power outage area inside are retained.

If it is judged as "N" in step 200 not during data communication with the center device, it is judged in step 202 whether various function setting data and the like are being set, and it is judged that setting is being made. If it is set, the setting state and date information at this time are read from the clock unit 5 and stored in the power failure area in the SRAM 4 (step 203). If neither during data communication nor during setting, the contents of the power failure area are cleared, other interrupt processing is performed in step 204, and the process returns to the main routine.

Next, the operation at the start of energization shown in the flow chart of FIG. 2B will be described. As mentioned above,
In the regular interrupt processing, the CPU 1 stores the fact in the power outage area in the SRAM 4 if it is in data communication with the center device. Is held. Step 250
Then, it is determined whether or not data is retained in this power failure area after the power is restored or the power is turned on. That is, after the power is restored and various initial processing is performed, step 2
In 50, it is determined whether or not there is data in the power failure area, and if there is data, it means that the operation indicated by the contents of the power failure area was performed before the power failure. In this case, in step 251, the display unit 9 To determine if the data needs to be displayed.

If the contents held in the power failure area do not indicate the setting state of various data but the data communication state with the center device, it is judged that the display is necessary, and step 252 At the power outage area, the contents of the power failure area are read out and the LCD unit 9 in the display unit 9 is read.
b Display on top. As an example of this display, as shown in Fig. 3, the power outage date, center name, deposit or withdrawal, power outage information, confirmation, etc. Various types of displays are displayed. Accordingly, even if a power failure occurs during the deposit / withdrawal procedure, the deposit / withdrawal procedure can be promptly restarted based on various information displayed after restoration. After that, other initial processing is performed in step 253, and step 254
Move to application processing of. In this way, when a power failure occurs, the operation status of the device before the power failure is stored without using the power failure detection circuit, and the information according to the operation status before the power failure is displayed after the power failure is restored or when the power is turned on. It was done.

In the present embodiment, the SRAM 4 is backed up by the battery E in order to retain the information at the time of power failure, but the battery E may be omitted by using a non-volatile memory. Further, in the present embodiment, the information indicating the communication state with the center device is saved by a periodic interrupt process, but it is saved when the processing operation changes due to, for example, a predetermined operation during data communication. It may be done.

[0013]

As described above, according to the present invention, when the predetermined operation is performed during the data communication, the predetermined data indicating the current communication state is stored in the memory, and the above-mentioned operation is performed when the power is restored after the power failure or the power is turned on. When it is determined that the predetermined data is present, the predetermined data is displayed on the display, so that it is possible to notify the communication status before the power failure without using the power failure detection circuit.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a telephone device with a data communication function according to the present invention.

FIG. 2 is a flowchart showing the operation of the above apparatus.

FIG. 3 is a diagram showing a display status of the above-mentioned device after restoration of a power failure.

[Explanation of symbols]

 1 CPU 3 DRAM 4 SRAM 5 Clock part 9 Display part 9a LCD control part 9b LCD unit 10 Key part 12 Communication part

Claims (1)

[Claims] 1. A display device, a modem, and a memory are provided,
In a telephone device with a data communication function that performs data communication with a center device connected via a telephone line, saves predetermined data indicating the current communication state in the memory according to a predetermined operation during normal communication Means, determining means for determining the presence or absence of the predetermined data at power-on or restoration, and display means for displaying the predetermined data on the display device when the presence of the predetermined data is determined by the determining means. A telephone device with a data communication function, which is provided.