JP2002042060A - Card insertion and drawing-out detecting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent loss of memory card by making setting the insertion and drawing-out of a memory card settable on a CPU in the slate where the memory card is kept inserted in terminal equipment. SOLUTION: Since the card insertion and drawing-out detecting device is provided with a card detecting switch 10 set in an on and an off state according to an insertion and ejection of a memory card 3, a card insertion and drawing- out switch 11 for setting a desirable insertion or drawing-out state by an external operation, and a CPU 15 for monitoring the states of the card detecting switch and the card insertion and drawing-out switch through positive logic to detect an insertion and drawing-out of the memory card, in the state where the memory card is kept inserted in terminal equipment, a desirable insertion or drawing-out state of the memory card can be set on the CPU by an external operation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a card insertion / removal detection device for monitoring and controlling the insertion / removal state of an IC memory card in a terminal device for inserting and removing an IC memory card.

[0002]

2. Description of the Related Art Conventionally, in terminal devices such as the Internet, URL card output, HP (homepage)
A memory card is used for input and output of information such as a service card. In a conventional terminal device, an insertion / removal detection device for detecting insertion / removal of a memory card is provided in order to prevent damage to the memory card when the memory card is inserted / removed after use, and to prevent malfunction from occurring. .

For example, Japanese Patent Application Laid-Open No. H11-110497 discloses a method of monitoring the insertion and removal of an IC card and detecting whether the IC card is mounted at a correct position. Japanese Unexamined Patent Publication No. 7-105324 discloses a system runaway by detecting a state of preparation for insertion / ejection of an information card and controlling the power supply of an apparatus for performing information processing of the information card to an off state. Prevention techniques are shown. Also, Japanese Patent Application Laid-Open No. 9-212600 discloses an IC card insertion / removal detection control device which detects insertion / removal of an IC card and performs dynamic initial setting corresponding to a plurality of interfaces of the IC card and cancels the initialization. ing. In addition, Japanese Unexamined Patent Publication No.
Japanese Patent Application Publication No. 66420 discloses a personal computer that detects insertion and removal of an IC card and controls access to an IO device by a CPU based on the detection signal.

[0004]

However, in the conventional card insertion / removal detection device as described above, it is necessary to remove the card when working with the card removed. For this reason, it is necessary to store unused cards, and there is a possibility that the cards may be lost.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and it is an object of the present invention to insert and remove a memory card from a CPU while keeping the memory card in a terminal device. It is an object to provide a detection device.

[0006]

According to the first aspect of the present invention, there is provided a card insertion / removal detecting device for detecting a state of insertion / removal of a memory card mounted on a device. A card detection switch that is set to an on / off state in response to removal, a card insertion / removal switch that is set to a desired insertion / removal state by an external operation, and the states of the card detection switch and the card insertion / removal switch are monitored by positive logic. And a CPU for detecting insertion / removal of the memory card.

In the above configuration, when a memory card is set to be inserted / removed by an external operation, the state of insertion / removal of the memory card is set for the CPU while the memory card is inserted in the terminal device.

[0008] The invention described in claim 2 is the first invention.
According to the invention, the CPU has a card detection port unit, and the card detection port unit includes an AND circuit to which signals of a card detection switch and an insertion / removal switch are input.

In the above configuration, a desired insertion / removal state is set for the CPU from either the card detection switch or the insertion / removal switch, and the burden on the CPU for card recognition is reduced.

[0010] Further, the invention according to claim 3 is based on claim 1.
Or in the invention of claim 2, the card insertion / removal switch is
A light receiving means for receiving an infrared signal emitted by operation of a remote controller for setting a desired insertion / removal state away from the terminal device is included.

[0011] In the above configuration, even when the memory card is inserted, the remote controller operates the memory card.
A desired insertion / removal state is set for the CPU.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A card insertion / removal detecting device according to one embodiment of the present invention will be described below with reference to the drawings.
FIG. 1 shows an external configuration of a terminal device 1 equipped with the device. The terminal device 1 uses a memory card 3 such as a URL card output for connecting to a provider on the Internet or a memory card 3 such as an HP service card for inputting / outputting information. The connector 4 is provided with a card detection switch 10 whose on / off state is set in accordance with insertion / removal of the memory card 3.

Further, the terminal device 1 is provided with a light receiving section 8 for receiving an optical signal such as an infrared ray 7.
Receives infrared rays 7 emitted by an external operation by the remote controller 5. The TV 2 is connected to an output terminal of the terminal device 1 and displays information from the memory card 3, an image processed by the terminal device 1, management data of the terminal device 1, and the like.

FIG. 2 shows a detailed configuration of the card insertion / removal detection device provided in the terminal device 1. The card insertion / removal detection device includes a card detection switch 10 that is set to an on / off state in accordance with a state of insertion / removal of the memory card 3 into / from the card holder 4 and a remote controller 5 provided with a desired device from outside the terminal device 1. A card insertion / removal switch 11 for setting the insertion / removal state of the memory card, and a CPU 15 for detecting the insertion / removal of the memory card 3 by monitoring the states of the card detection switch 10 and the card insertion / removal switch 11 by positive logic.
It is composed of

The remote controller 5 is provided with an optical signal transmitting section 6 for transmitting the state set by the card insertion / removal switch 11 to the light receiving section 8 of the terminal device 1 by infrared rays 7 or the like. The terminal device 1 includes a light receiving unit 8 for receiving an infrared signal 7 from the remote controller 5, a card detection switch 10, and a card detection port unit 13 including an AND circuit 12 for taking a positive logic of a signal from the light receiving unit 8.
And a system bus 14 for inputting a signal from the card detection port unit 13 to the CPU 15.

Next, the operation of the card insertion / removal detection device 20 configured as described above will be described. When the memory card 3 is inserted into the card holder 4, the card detection switch 10
Is set to logic H, and when the memory card 3 is removed, the output of the card detection switch 10 is set to logic L. On the other hand, in the remote controller 5, the output of the card insertion / removal switch 11 is normally set to logic H, and when there is a command corresponding to the removal of the memory card 3, the output of the card insertion / removal switch 11 is set to logical H. L is set. This is output from the optical signal transmitting section 6 by infrared rays 15, and the light receiving section 8 is set to logic L.

When the memory card 3 is in the inserted state, the output of the card detection switch 10 is logic H, and if the output of the card insertion / removal switch 11 is logic H, the logic is sent to the CPU 15 via the AND circuit 12. H is input, and it is determined that the memory card 3 is in the inserted state. When the memory card 3 is removed, the CPU 15 outputs a logical low signal.
Is input, and it is determined that the memory card 3 is in the withdrawn state.

Next, when the memory card 3 is in the inserted state and the output of the card insertion / removal switch 11 is set to logic L in the remote controller 5, the logic L is input to the CPU 15 irrespective of the insertion / removal state of the memory card 3. And CP
At U15, it is determined that the memory card 3 is in the removal state. Therefore, the remote controller 5 can set the removal state of the memory card 3 with the memory card 3 inserted in the card holder 4.

As described above, according to the present embodiment, the card detection switch 10 of the card connector 4 and the hardware switch from the remote controller 11 or the like, or
By monitoring the positive logic of the software switch by the CPU 15, the insertion and removal of the memory card 3 can be set to the CPU 15 while the memory card 3 is still connected to the terminal device 1. Thereby, when using an IC card or the like, since it can be left inserted when not in use, there is no need to go to the terminal device 1 to remove the card, and it is not necessary to keep the card, The card is not lost, and the burden on the terminal device due to the recognition of the card can be reduced.

The present invention is not limited to the configuration of the above-described embodiment, but can be variously modified. For example, in the above embodiment, the configuration of the card insertion / removal detection device is such that the card detection port unit 13 includes the card detection switch 10 and the insertion / removal switch 1.
AND circuit 1 which is hardware to which the signal 1 is input
Although the AND circuit 12 is omitted, the outputs of the card detection switch 10 and the card insertion / removal switch 11 are directly input to the CPU 15, and the software of the CPU 15 controls the operation of the card detection switch 10 and the card insertion / removal switch 11. The state may be monitored by positive logic.

The setting of the removal state of the memory card 3 is performed not by optical input means by the remote controller 5 but by direct wiring from the card switch 21 to the card detection port unit 13 as shown in FIG. Then CP
A setting signal for the insertion / removal state of the memory card 3 may be input to U15.

[0022]

As described above, according to the card insertion / removal detection device of the present invention, the state of the card detection switch and the card insertion / removal switch are monitored by positive logic to detect the insertion / removal of the memory card. Therefore, a desired memory card insertion / removal state can be set to the CPU by an external operation while the memory card is inserted in the terminal device. Therefore, it is not necessary to store the memory card, and it is possible to prevent the memory card from being lost.

Further, by providing an AND circuit for inputting the signals of the card detection switch and the insertion / removal switch to the card detection port of the CPU, the burden on the CPU for recognizing the card is reduced.

Further, by operating a remote controller for setting a desired insertion / removal state away from the terminal device, a card insertion / removal signal of a card insertion / removal switch is received so that a memory card is mounted. Even in this state, a desired memory card insertion / removal state can be set for the CPU by operating the remote controller.

[Brief description of the drawings]

FIG. 1 is a perspective view of a terminal device equipped with a card insertion / removal detection device according to an embodiment of the present invention.

FIG. 2 is a configuration diagram of the card insertion / removal detection device.

FIG. 3 is a configuration diagram of another embodiment of the apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Terminal device 3 Memory card 4 Card connector 5 Remote controller 6 Optical signal transmission part 8 Light receiving part 10 Card detection switch 11, 21 Card insertion / removal switch 12 AND circuit 13 Card detection port 15 CPU

Claims (3)

[Claims] 1. A card insertion / removal detection device for detecting an insertion / removal state of a memory card mounted on a terminal device, comprising: a card detection switch which is set to an on / off state in accordance with the insertion / removal of the memory card; A card insertion / removal switch that is set to the insertion / removal state of the above, and a CPU that detects the insertion / removal of the memory card by monitoring the states of the card detection switch and the card insertion / removal switch by positive logic. A card insertion / removal detection device characterized by the above-mentioned. 2. The CPU according to claim 1, wherein the CPU has a card detection port, and the card detection port includes an AND circuit to which signals of the card detection switch and the insertion / removal switch are input. Item 2. A card insertion / removal detection device according to Item 1. 3. The card insertion / removal switch includes a light receiving unit that receives an infrared signal emitted by operating a remote controller that sets a desired insertion / removal state away from the terminal device. The card insertion / removal detection device according to claim 1 or 2.