JPH0571997U - Information processing equipment - Google Patents

Abstract

(57) [Summary] [Purpose] When a commercial power supply of the AC adapter is connected, an alarm is output to prevent it from being left unattended. [Structure] The AC adapter 2 includes a primary circuit 7, a transformer 8,
Secondary circuit 9, voltage detection circuit 4, alarm circuit 5, speaker 6
It is composed of. Information processing unit 1 and AC adapter 2
When connected via voltage supply lines 10 and 11,
Since the ground signal line 12 is connected to the ground on the information processing unit 1 side, it shows a logic level “0” and the voltage detection circuit 4
Does not send the alarm signal 14. When the connection between the information processing unit 1 and the AC adapter 2 is disconnected, the ground signal line 12 is pulled up by the resistor 13 on the AC adapter 2 side,
It shows a logic level "1", and the voltage detection circuit 4 detects the voltage and sends an alarm signal 14 to the alarm circuit 5. The alarm circuit 5 receives the alarm signal 14 and sends an audio signal 15 to the speaker 9, and the speaker 9 sounds to notify that the AC adapter 2 and the information processing unit 1 are not connected.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an information processing device, and more particularly to an information processing device for use with a commercial AC power supply.

[0002]

[Prior Art]

 2. Description of the Related Art Conventionally (not shown), an information processing apparatus uses an AC adapter for operating with a commercial AC power source and for charging a secondary battery for operation incorporated in the main body.

The AC adapter of this information processing apparatus is provided with an AC socket for connecting to a commercial AC power source and a terminal for supplying a DC output to the main body.

Further, the AC adapter of the information processing device is provided with a transformer therein, converts a commercial AC power source to generate direct current required for the operation of the information processing device, and supplies it to the information processing device.

[0005]

[Problems to be solved by the device]

 In the above-mentioned conventional information processing device, if the information processing device is supplied from the commercial AC power supply to the AC adapter, AC flows through the primary circuit inside the adapter even if the DC output is not connected to the main unit. It becomes heat and is consumed.

Further, if the user leaves the AC adapter connected to the AC outlet for a long time, the current consumption increases, which cannot be ignored.

Therefore, the present invention provides an information processing apparatus that generates an alarm sound when the AC adapter is connected to a commercial AC power source, even though the AC adapter is not connected to the information processing apparatus. The purpose is to provide.

[0008]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the information processing apparatus of the present invention includes an information processing unit provided with a detection means for detecting that power is being supplied by sending a ground signal, and a predetermined AC power source from a commercial AC power source. A power source generating means for converting to a DC power source and generating the power source, and a voltage detecting means for generating an alarm signal only when driven by the power source generated by the power source generating means and the ground signal is not sent from the detecting means. It is characterized by comprising an AC adapter including a circuit and an alarm circuit for generating an alarm sound based on an alarm signal from the voltage detection circuit.

[0009]

【Example】

 An embodiment of the information processing device of the present invention will be described below.

FIG. 1 is a block diagram of an information processing apparatus according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a disconnection state of the AC adapter output of the information processing apparatus according to the embodiment of the present invention.

In an information processing apparatus according to an embodiment of the present invention, as shown in FIG. 1, an information processing unit 1 includes a power supply line 10, 11 and a ground of a detection unit for detecting that power is supplied. It is connected to the AC adapter 2 via the signal line 12.

The AC adapter 2 converts the commercial AC power source into a predetermined DC power source and generates a DC power source, and a power source generating means 3 and an alarm signal 14 only when a ground signal is not sent from the detecting means to the ground signal line 12. The voltage detection circuit 4 for generating the alarm signal, the alarm circuit 5 for generating the audio signal 15 as the alarm sound based on the alarm signal 14 from the voltage detection circuit 4, and the speaker 9 for reproducing the audio signal 15 as the alarm sound. It is configured.

The power supply generation means 3 includes a transformer 8 for converting a commercial AC power supply into an AC power supply of a predetermined voltage, and a primary circuit 7 for connecting the commercial AC power supply to the primary winding of the transformer 8 to generate a magnetic field. An alternating current power supply of a predetermined voltage is generated in the secondary winding of the transformer 8 by the magnetic field of the primary circuit 7, and a secondary circuit 9 for converting this AC power supply into a predetermined DC power supply is provided.

Power is supplied to the voltage detection circuit 4 and the alarm circuit 5 from the secondary circuit 9 and operates as long as the primary circuit 7 is supplied with commercial AC power.

The power supply lines 10 and 11 are provided for driving the information processing section 1, and the ground signal line 12 is a detection means for detecting the power supply, and has either a logic level “1” or “0”. Indicates somewhere.

The voltage detection circuit 4 detects the logic level of the ground signal line 12 and sends the warning signal 14 to the warning circuit 8 if it is “1” and does not send it if it is “0”.

As shown in FIG. 1, when the information processing unit 1 and the AC adapter 2 are connected via the power supply lines 10 and 11, the ground signal line 12 is connected to the ground on the information processing unit 1 side. Since it is touched, the voltage detection circuit 4 does not output the alarm signal 14 because it indicates the logic level "0".

FIG. 2 is a block diagram showing a disconnection state of the AC adapter output of the information processing apparatus according to the embodiment of the present invention.

As shown in FIG. 2, a state in which the information processing unit 1 and the AC adapter 2 are disconnected is shown, and the ground signal line 12 is pulled up by the resistor 13 on the side of the AC adapter 2 and the logic level “1”. Indicates.

In this case, the voltage detection circuit 4 detects the voltage and sends the warning signal 14 to the warning circuit 5, receives the warning signal 14 sent from the warning circuit 5, and outputs the sound signal 15 to the speaker 9. Then, the speaker 9 sounds an alarm sound to warn the user that the AC adapter 2 and the information processing unit 1 are not connected.

[0022]

[Effect of the device]

 As described above, according to the information processing apparatus of the present invention, the primary side of the AC adapter can be notified by warning the user of the original usage state, that is, the state in which the AC adapter and the information processing unit are not connected. This has the effect of reducing the power consumption of the circuit alone.

Further, there is an effect of preventing the user from forgetting to disconnect the AC adapter from the outlet when moving after using the AC adapter connected to the information processing apparatus.

[Brief description of drawings]

FIG. 1 is a block diagram of an information processing apparatus according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a disconnection state of an AC adapter output of an information processing apparatus according to an embodiment of the present invention.

[Explanation of symbols]

 1 Information Processing Unit 2 AC Adapter 3 Power Generation Unit 4 Voltage Detection Circuit 5 Alarm Circuit 6 Alarm Circuit (Speaker) 7 Power Generation Unit (Primary Circuit) 8 Power Generation Unit (Transformer) 9 Power Generation Unit (Secondary Circuit) 10 , 11 power generation means (power supply line) 12 detection means (ground signal line) 13 ground signal (resistance) 14 alarm signal 15 alarm sound (voice signal)

Claims (1)

[Scope of utility model registration request] 1. An information processing unit provided with detection means for detecting that power is being supplied by sending a ground signal, and a power supply for converting the commercial AC power supply into a predetermined DC power supply to generate the power supply. Generating means, a voltage detection circuit driven by the power supply generated by the power supply generating means, and generating an alarm signal only when the ground signal is not transmitted from the detecting means, and based on the alarm signal from the voltage detection circuit An information processing device comprising an AC adapter having an alarm circuit for generating an alarm sound.