JPH04155410A - Data processor - Google Patents

Abstract

PURPOSE:To prevent this data processor from being destructed by saving data in an internal memory to an external storage device in response to a 1st signal and then stopping power supply to equipments in response to a 2nd high temperature signal. CONSTITUTION:This data processor is provided with a central processing unit(CPU) (control means) 1 for controlling the processor, a power supply part 4 for supplying power to the processor, a thermistor 5 fixed in the vicinity of the power supply part 4, and a temperature detecting part (signal generating part) 6 for generating two kinds of signals in accordance with a change in the temperature of the inherent resistance value of the thermistor 5. The 1st signal is higher than a prescribed temperature and the 2nd signal is higher than the 1st signal. The control means 1 controls the system so that the data of the internal memory 2 are saved to the external storage device 3 in response to the 1st signal and power supply to the apparatuses is stopped in response to the 2nd signal. Consequently, the equipments can be prevented from being destructed.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to data processing devices such as word processors and desktop publishing (DTP) devices [Prior Art] Generally, data processing devices, etc. In order to keep the temperature within a range that does not have a negative impact on the equipment, take measures such as providing ventilation holes in the case, installing heat sinks on parts that generate a lot of heat (semiconductors, etc.), or using a fan to exhaust hot air from inside the case. [Problems to be Solved by the Invention] However, even if the heat is dissipated by the above-mentioned conventional data processing device, the fan may become stuck, or the ventilation hole may be accidentally opened by the user. If the temperature of the equipment rises abnormally due to being blocked or installed in a place exposed to direct sunlight, it will not only shorten the lifespan of the equipment, but in extreme cases, there is also concern that it may lead to destruction of the equipment. Also word processing and desktop publishing (DTP)
! If the above situation occurs during operation of equipment used to create or edit documents, such as a machine, there is a risk of losing not only the equipment but also the valuable documents (data) that have been created over a long period of time. The present invention has been made in view of the above problems, and when the temperature of the heat generating part reaches a first predetermined temperature, the data in the memory is saved to the hard disk or floppy disk, and the data is protected by the temperature. [Means for Solving the Problems] The present invention ζ Output a 'sl signal indicating that the temperature inside the device is higher than the first predetermined temperature, and a second signal indicating that the temperature inside the device is higher than the second predetermined temperature, which is higher than the first predetermined temperature. A signal generating means is provided, the data in the internal memory is saved to an external storage device in response to the signal from the second temperature detecting means, and power is supplied to the device in response to the signal from the second temperature detecting means. With the above configuration, when the temperature of the device rises to a predetermined temperature, the data in the memory (RAM) is saved to the hard disk or floppy disk, etc. In addition, if the temperature rises further, it is possible to prevent the destruction of the equipment by stopping the power supply voltage supply. 1 is a block diagram of a data processing device in which 1 is a central processing unit (hereinafter referred to as CPU) that controls the device, 2 is a random access memory (hereinafter referred to as RAM) that stores document data etc. processed by the CPUI. ), 3 is a hard disk drive, an external storage device WL such as a floppy disk, 4 is a power supply unit that supplies power to the device, 5 is a thermistor 9 installed near the power supply unit 4, and 6 is a change in the specific resistance value of the thermistor 5 due to temperature. 2 is a circuit diagram of the temperature detection section 6 shown in FIG. 1. 8 and 9 are comparators.The operation of the data processing device of this embodiment configured as above will be explained below.
The potential of the point is Vll. The reference voltages of comparators 8 and 9 are V2 and V3 respectively. Also, V3>V2 The specific resistance value of the power supply unit 4 decreases while the Vl increases. Normally, the temperature rise of the power supply unit 4 is suppressed to within a certain temperature by the heat dissipation means (not shown) provided in the power supply unit 4. If some kind of failure occurs in the heat dissipation means (not shown), even if the temperature of the power supply section 4 continues to rise, the temperature force of the power supply section 4 will reach a preset first dangerous temperature (Tl). the law of nature,
When Vl rises above v2, a signal is issued to output 1 due to the operation of comparator 8, but when the CPU receives the signal from output 1, it saves the data stored in RAM 2 to external storage device 3. When the data has been saved, the power supply unit 4 automatically shuts off the power supply in response to a signal from the CPUI.
When the temperature of the power supply unit 4 reaches the second dangerous temperature (referred to as T2) and L Vl rises above V3, a signal is issued to the output 2 due to the operation of the comparator 9. When it receives a signal, it shuts off the power by itself.T I IL When the maximum load conceivable under normal device usage is applied to the power supply section 4, T2i is the limit temperature of the semiconductor device, even though it is set by temperature data. The resistance value of the thermistor 5 has a unique temperature characteristic, so when Tl and T2 are set, v2 and ■3 are uniquely determined. If the temperature of the power supply unit rises abnormally due to some kind of failure in the heat dissipation means, please save the document data being created to an external storage device such as a hard disk, and then
Also, when the temperature rise approaches the limit temperature of the semiconductor device, the number of times the power is cut off is given top priority.Prevent data corruption in the event of a temperature abnormality in the power supply section.Prevent the destruction of the device as the top priority. This embodiment has the advantage of using an external storage device such as a hard disk or floppy disk as the storage device for saving data. The present invention is not limited to this invention, as long as the data is not damaged by cutting off the power to the device. and a second signal indicating that the temperature is higher than the first predetermined temperature and a second signal indicating that the temperature is higher than the second predetermined temperature. The temperature reaches the first predetermined temperature by evacuating the data in the memory to an external storage device and by providing a control means for stopping power supply to the device in response to a signal from the second temperature detection means. Once the temperature reaches a second predetermined temperature, the data in the memory can be saved to the hard disk or floppy disk to protect the data, and when the temperature rises further and reaches a second predetermined temperature, the power supply can be stopped to protect the device from destruction.

[Brief explanation of the drawing]

Figure 1 is a block diagram of a data processing device according to an embodiment of the present invention. Figure 3g2 is a circuit diagram of the temperature detection section in Figure 1.

Claims (1)

[Scope of Claims] 1) Comparing a temperature sensing element provided in an apparatus and whose physical quantity changes in response to the temperature within the apparatus, and the physical quantity of the temperature sensing element and two different reference physical quantities, a signal generating means for outputting a first signal indicating that the temperature inside the device is at least a first temperature, and a second signal indicating that the temperature inside the device is at least a second temperature higher than the first temperature; control means for receiving a first signal from the signal generation means to store data in the internal memory in an external memory; and control means for receiving a second signal from the signal generation means for supplying power to the device. A data processing device comprising: a power supply device that stops. 2) The data processing device according to claim 1, wherein the supply of power to the device is stopped after the control means finishes storing the data in the internal memory in the external memory.