Mobile Phone Apparatus

• US 20080234010A1
• Filed: 03/19/2008
• Published: 09/25/2008
• Est. Priority Date: 03/22/2007
• Status: Active Grant

• Current Assignee: Brother Kogyo Kabushiki Kaisha (Brother Industries Limited)
• Original Assignee: Brother Kogyo Kabushiki Kaisha (Brother Industries Limited)
• Inventors: Sato, Katsuhiro, Kuwabara, Kazuhiro
• Granted Patent: US 8,385,983 B2
• Time in Patent Office: Days
• US Class Current: 455/573
• CPC Class Codes: H02J 7/00308 Overvoltage protection

Abstract

A mobile phone apparatus is provided. The mobile phone apparatus includes a charger for supplying power to a rechargeable battery including a connection portion and a main telephone unit. The main telephone unit includes a rechargeable battery detection unit which detects whether the connection portion of the rechargeable battery is connected to the main telephone unit; an overvoltage protection unit which is coupled to the connection portion of the rechargeable battery and switches between an active state of supplying power output from the connection portion and an inactive state of not supplying power output from the connection portion; and a controller which controls the overvoltage protection unit to switch the overvoltage protection unit into the active state if the rechargeable battery detection unit detects that the rechargeable battery is connected.

Claims

1. A mobile phone apparatus comprising:

a charger for supplying power to a rechargeable battery comprising a connection portion;

a main telephone unit comprising;

a rechargeable battery detection unit which detects whether the connection portion of the rechargeable battery is connected to the main telephone unit;

an overvoltage protection unit which is coupled to the connection portion of the rechargeable battery and switches between an active state of supplying power output from the connection portion and an inactive state of not supplying power output from the connection portion; and

a controller which controls the overvoltage protection unit to switch the overvoltage protection unit into the active state if the rechargeable battery detection unit detects that the rechargeable battery is connected.

2. The mobile phone apparatus according to claim 1, further comprising a battery voltage detection unit which detects a voltage at the connection portion of the rechargeable battery,

wherein the rechargeable battery detection unit detects whether the rechargeable battery is connected to the main telephone unit based on the voltage detected by the battery voltage detection unit after an elapse of an amount of time from a startup time.

3. The mobile phone apparatus according to claim 1, further comprising a notification unit which generates a warning if the rechargeable battery detection unit detects that the rechargeable battery is not connected.

4. The mobile phone apparatus according to claim 1, further comprising an initialization controller which switches the overvoltage protection unit into the inactive state at a startup time.

5. The mobile phone apparatus according to claim 1, further comprising a charger detection unit which detects whether the charger supplies power,

wherein, if the charger detection unit detects that the charger does not supply power, the controller controls the overvoltage protection unit to switch the overvoltage protection unit into the active state.

6. The mobile phone apparatus according to claim 1, wherein the overvoltage protection unit comprises a field effect transistor switch.

7. A mobile phone apparatus comprising:

a charger for supplying power to a rechargeable battery including a connection portion; and

a main telephone unit comprising;

a supply power connecting unit which switches between a first active state of supplying power supplied from the charger to the rechargeable battery and a first inactive state of not supplying power supplied from the charger to the rechargeable battery;

an overvoltage protection unit which is coupled to the connection portion of the rechargeable battery and switches between a second active state of supplying power output from the connection portion and a second inactive state of not supplying power output from the connection portion;

an off setting unit which controls the supply power connecting unit to switch the supply power connecting unit into the first inactive state after an elapse of a first amount of time from a startup time; and

a controller which controls the overvoltage protection unit to switch the overvoltage protection unit into the second active state after an elapse of a second amount of time from a time when the supply power connecting unit is switched into the first inactive state.

8. The mobile phone apparatus according to claim 7, further comprising an initialization control unit which switches the supply power connecting unit into the first active state and switches the overvoltage protection unit into the second inactive state at the startup time.

9. The mobile phone apparatus according to claim 7, further comprising a charger detection unit which detects whether the charger supplies power,

wherein, if the charger detection unit detects that the charger does not supply power, the controller controls the overvoltage protection unit to switch the overvoltage protection unit into the second active state.

10. The mobile phone apparatus according to claim 7, wherein the overvoltage protection unit comprises a field effect transistor switch.