JPH09128511A - Memory card with access lamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To protect held data to inhibit a memory card from being pulled out while an LED is turned on by providing the LED to be turned on while access is being performed from a CPU to the memory card. SOLUTION: When performing read/write to a memory card 2, an R/W control signal (a) is outputted from a CPU 1 to the memory card 2. When this R/W control signal (a) is inputted to a timer part 3 inside the memory card 2, the timer part 3 is started and an LED turn-on signal (b) for turning on an LED 4 mounted on the memory card 2 is outputted from the timer part 3. When the R/W control signal (a) from the CPU 1 is made active, the LED turn-on signal (b) is outputted from the timer part 3 at the time interval of 0.1 second. Thus, when read/write is being performed to the memory card 2, the LED 4 mounted on the memory card 2 can be turned on.

Description

Detailed Description of the Invention

[0001]

[0001] The present invention relates to a memory card.

[0002]

2. Description of the Related Art Conventionally, this type of memory card has a preventive system on the card reader side or the like that prevents the card from being accidentally pulled out when the memory card is accessed. (See, for example, Japanese Patent Laid-Open No. 63-115291).

[0003]

The above-mentioned conventional memory card has a problem that the data held in the memory card is destroyed if the memory card is removed at the time of accessing the memory card.

[0004]

A memory card with an access lamp according to the present invention comprises a timer section which is activated by an R / W control signal when the memory card is accessed, and an LED which is turned on by a signal from the timer section.

[0005]

Next, the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a perspective view of the memory card with access lamp shown in FIG. When reading / writing to / from the memory card 2, the CPU 1 outputs the R / W control signal a to the memory card 2. When the R / W control signal a is input to the timer unit 3 inside the memory card 2, the timer unit 3 Is started, and the LED lighting signal b for lighting the LED 4 mounted on the memory card 2 is output from the timer unit 3. The LED lighting signal b is output from the timer unit 3 at intervals of 0.1 seconds when the R / W control signal a from the CPU 1 becomes active.

As described above, when the memory card 2 is read from or written to, the R / W control signal a from the CPU 1 becomes active, and the timer section 3 outputs the LED lighting signal 6
Is output and the LED 4 mounted on the memory card 1 can be turned on.

[0008]

As described above, according to the present invention, the L mounted on the memory card when the memory card is accessed.
By turning on the ED, while the LED is on,
It is possible to prohibit removal of the memory card, which has the effect of protecting the data held in the memory card.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a perspective view of the memory card shown in FIG.

[Explanation of symbols]

 1 CPU 2 Memory card 3 Timer section 4 LED a R / W control signal b LED lighting signal

Claims (2)

[Claims] 1. A memory card with an access lamp, comprising an LED that lights up when the CPU is accessing the memory card. 2. A memory card with an access lamp, comprising: a timer unit which is activated by an R / W control signal when accessing the memory card; and an LED which is turned on by a signal from the timer unit.