JPH053060A - Cable connection confirming system - Google Patents

Abstract

PURPOSE:To connect a cable to a system unit reliably by providing a connection confirm circuit and a display device to display connection conditions in the system unit. CONSTITUTION:A connection confirm circuit 3 and a display device 4 are provided in a system unit 2, and when an I/O unit 1 is connected to the unit 2 with a cable 5, the circuit 3 confirms the connection with a closed loop circuit of VCC. That is, when the cable 5 is connected properly, a current flows in the closed loop circuit to light a light emitting diode to display on a display device 4. When the cable is not connected properly, the loop circuit is not closed, hence the diode cannot be lighted. Thereby the connection condition of the cable can be confirmed and displayed for the proper cable connection.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable connection confirmation system.

[0002]

2. Description of the Related Art Conventionally, when a system of this type is connected to another system or an I / O device by a cable, the connection is merely confirmed by a human sense.

[0003]

However, the above-mentioned conventional system has a drawback in that it cannot be confirmed accurately because the cable is not always connected correctly.

[0004]

The system of the present invention has means for confirming the connection inside the system when a cable is connected, and displaying the result of the confirmation.

[0005]

The present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the present invention.
Reference numeral 2 shows a system of the present invention, which has a display 4 of a connection confirmation circuit 3 therein. Therefore, when connecting a cable between the I / O device 1 and the system main body 2, the connection confirmation circuit 3 confirms the result, and the result is displayed on the display unit 4.

FIG. 2 is a circuit diagram showing an example of use of the present invention. The connection confirmation circuit 3 is confirmed by a closed loop circuit by Vcc, and the indicator 4 indicates by lighting with a light emitting diode. That is, when the cable 5 is connected to the connector 6,
If the connection is correct, a current will flow through the closed loop circuit and light will be emitted from the light emitting diode, indicating that it is "connected". When the connection is not correct, the closed loop circuit does not function and no current flows through the light emitting diode, so that no light is generated and the message "not connected" is displayed.

[0007]

As described above, the present invention has an effect that the cable can be accurately connected by confirming and displaying whether or not the cable is correctly connected.

[Brief description of drawings]

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

FIG. 2 is a circuit diagram of a usage example of the present invention.

[Explanation of symbols]

1 I / O device 2 System main body (cable connection confirmation system of the present invention) 3 Connection confirmation circuit 4 Display 5 Cable 6 Connector

Claims (1)

Claims: What is claimed is: 1. A cable connection confirmation system, comprising a circuit for confirming connection when a cable is connected to a system body such as a personal computer and an indicator for displaying the connection state.