Terminal device

• US 7,692,407 B2
• Filed: 05/22/2007
• Issued: 04/06/2010
• Est. Priority Date: 05/24/2006
• Status: Active Grant

• Current Assignee: Sony Computer Entertainment Incorporated (Sony Group Corp.)
• Original Assignee: Sony Computer Entertainment Incorporated (Sony Group Corp.)
• Inventors: Nozawa, Tetsufumi
• Primary Examiner(s): Assouad; Patrick J
• Assistant Examiner(s): DIAO, M BAYE
• Application Number:
  US11/751,689
• Publication Number:
  US 20080054851A1
• Time in Patent Office: 1,050 Days
• Field of Search: 320/130, 320/131, 320/134, 320/136, 320/137, 320/160, 320/162, 318/139
• US Class Current: 320/137
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: H02J 7/0068 Battery or charger load switching, e.g. concurrent charging and load supply H02J7/0013 takes precedence
• CPC Class Codes: H02J 7/0071 with a programmable schedule

Abstract

A technology for charging the battery of a terminal device with efficiency. In a wireless game controller, a charge control unit supplies electric power from an external power supply to a battery. A communication management unit receives a drive request signal to a vibrating motor. A motor control unit supplies a drive current to the vibrating motor in accordance with the drive request signal. The charge control unit performs charge control for the battery in a first mode when the communication management unit does not receive the drive request signal, and performs charge control for the battery in a second mode when the communication management unit does receive the drive request signal. The charge control unit performs the charge control for the battery in the first mode using a charging current higher than that in the second mode.

Claims

1. A terminal device comprising:

a battery which stores electric power;

a charge control unit which supplies electric power from an external power supply to the battery;

a load which is driven by a drive current supplied thereto;

a communication management unit which receives a drive request signal for the load; and

a load control unit which supplies the drive current to the load in accordance with the drive request signal, wherein

the charge control unit performs charge control for the battery in a first mode when the communication management unit does not receive the drive request signal, and performs charge control for the battery in a second mode when the communication management unit does receive the drive request signal.

2. The terminal device according to claim 1, wherein the charge control unit performs the charge control for the battery in the first mode using a charging current higher than that in the second mode.

3. The terminal device according to claim 1, wherein the load control unit supplies the drive current to the load after a predetermined first time interval elapses since the communication management unit received the drive request signal.

4. The terminal device according to claim 1, wherein when the communication management unit does not receive the drive request signal for a predetermined second time interval in the second mode, the charge control unit switches the charge control to the first mode.