Universal serial bus apparatus and method for managing power in universal serial bus apparatus

• US 20070124614A1
• Filed: 11/27/2006
• Published: 05/31/2007
• Est. Priority Date: 11/25/2005
• Status: Abandoned Application

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: Lee, Hyun, Park, Kwang, Huh, Jae
• Application Number:
  US11/604,585
• Publication Number:
  US 20070124614A1
• Time in Patent Office: Days
• US Class Current: 713/300
• CPC Class Codes: G06F 1/263 Arrangements for using multiple switchable power supplies, e.g. battery and AC G06F1/30 takes precedence
• CPC Class Codes: G06F 1/3215 Monitoring of peripheral devices
• CPC Class Codes: G06F 1/325 Power saving in peripheral device
• CPC Class Codes: G06F 1/3253 Power saving in bus
• CPC Class Codes: Y02D 10/00 Energy efficient computing, e.g. low power processors, power management or thermal management

Abstract

In order to manage power in a wireless type USB apparatus including a solar battery and a power controller and to perform data transmission and reception to and from a wireless type USB host, the solar battery supplies power, and whether the wireless type USB host and apparatus are powered on is checked, the connection is performed or released according to the checking, the state of the wireless type USB apparatus is switched to a dormant state when the connection is released from the wireless type USB host, and the power consumption is reduced by the power controller. Thus, power is easily supplied and the connection and the power are effectively managed.

Claims

1. A power managing method of a wireless type universal serial bus apparatus associated with a wireless type universal serial bus host and attached with a solar battery to receive solar energy, the method comprising:

supplying an electric power from the solar battery;

recharging the wireless type universal serial bus apparatus with the supplied electric power;

performing a power control to reduce a consumption of the supplied electric power by periodically checking whether the wireless type universal serial bus host and the wireless type universal serial bus apparatus are powered on or off; and

switching a state of the wireless type universal serial bus apparatus to a dormant state when all of the wireless type universal serial bus host near the apparatus are powered off during the power control.

2. The power managing method of a wireless type universal serial bus apparatus according to claim 1, further comprising supplying the electric power from a self-power and a bus power when the electric power is not supplied from the solar battery.

3. The power managing method of a wireless type universal serial bus apparatus according to claim 1, further comprising supplying the electric power from a rechargeable device installed in the wireless type universal serial bus apparatus when the wireless type universal serial bus apparatus is powered off.

4. The power managing method of a wireless type universal serial bus apparatus according to claim 1, wherein the performing the power control comprises:

connecting the wireless type universal serial bus apparatus to the wireless type universal serial bus host when the wireless type universal serial bus host is powered on and the wireless type universal serial bus apparatus within a wireless communication zone is powered on; and

performing a wireless communication between the wireless type universal serial bus apparatus and the connected wireless type universal serial bus host.

5. The power managing method of a wireless type universal serial bus apparatus according to claim 1, wherein the performing the power control comprises:

releasing the connection from the wireless type universal serial bus host when all the wireless type universal serial bus host near the apparatus are powered off, and the wireless type universal serial bus apparatus is powered on;

switching a state of the wireless type universal serial bus apparatus to a dormant state; and

connecting the wireless type universal serial bus apparatus to the wireless type universal serial bus host near the apparatus.

6. The power managing method of a wireless type universal serial bus apparatus according to claim 1, wherein the performing the power control comprises:

performing a wireless communication with the wireless type universal serial bus host by connecting the wireless type universal serial bus apparatus to the wireless type universal serial bus host and releasing the connection when all of the wireless type universal serial bus host near the apparatus are powered off; and

checking whether the recharging is completed or not when the wireless type universal serial bus apparatus is powered off.

7. The power managing method of a wireless type universal serial bus apparatus according to claim 1, wherein, in the performing the power control, when the wireless type universal serial bus host and the wireless type universal serial bus apparatus are powered off, whether the recharging is completed or not is checked.

8. A wireless type universal serial bus apparatus associated with a wireless type universal serial bus host to carry out wireless universal serial data transmission and reception and a multimedia streaming service, the apparatus comprising:

a main body including a solar battery attached to an outer side thereof to supply an electric power and a rechargeable device to supply the electric power when the electric power is off;

a power controller to control a connection to and a release from the wireless type universal serial bus host, and a switching of a state of the wireless type universal serial bus apparatus to a dormant state to reduce a power consumption when the wireless type universal serial bus host is powered off; and

a universal serial bus port to be directly connected to the wireless type universal serial bus host.

9. The wireless type universal serial bus apparatus according to claim 8, further comprising a self-power port to supply the electric power when the electric power is not supplied from the solar battery and a bus power.

10. The wireless type universal serial bus apparatus according to claim 8, wherein the power controller connects the wireless type universal serial bus apparatus to the wireless type universal serial bus host, when the wireless type universal serial bus host and the wireless type universal serial bus apparatus are powered on.

11. The wireless type universal serial bus apparatus according to claim 8, wherein the power controller releases the connection from the wireless type universal serial bus host when the wireless type universal serial bus host is connected to the wireless type universal serial bus apparatus, the wireless type universal serial bus host is powered off, and the wireless type universal serial bus apparatus is powered on, and switches the state of the wireless type universal serial bus apparatus to the dormant state when there is no available wireless type universal serial bus host near the wireless type universal serial bus apparatus.

12. The wireless type universal serial bus apparatus according to claim 8, wherein the power controller releases the connection from the wireless type universal serial bus host and checks whether the recharging is completed, when the wireless type universal serial bus host and the wireless type universal serial bus apparatus are powered off.

13. The wireless type universal serial bus apparatus according to claim 8, wherein the power controller checks whether the recharging is completed when the wireless type universal serial bus host is powered on and the wireless type universal serial bus apparatus is powered off.

14. A wireless type universal serial bus apparatus associated with a wireless type universal serial bus host to carry out data transmission and reception and a multimedia streaming service, the apparatus comprising:

a power managing process to manage an electric power supplied from a solar battery, a self-power, and a bus power;

a wireless processing process to process a communication with the wireless type universal serial bus host using wireless media;

a connection managing process to manage the connection to and the release from the wireless type universal serial bus host, and to switch a state of the wireless type universal serial bus apparatus to a dormant state when all of the wireless type universal serial bus host near the wireless type universal serial bus apparatus are powered off; and

a data transfer process to transfer and receive data to and from the wireless type universal serial bus host and to carry out the multimedia streaming service.

15. The wireless type universal serial bus apparatus according to claim 14, further comprising:

a protocol processing process to encode and decode data to be transferred through the wireless media; and

an apparatus interface process to carry out interfacing with other types of universal serial bus apparatus.

16. The wireless type universal serial bus apparatus according to claim 14, wherein the connection managing process connects the wireless type universal serial bus apparatus to the wireless type universal serial bus host when the wireless type universal serial bus host and the wireless type universal serial bus apparatus are powered on.

17. The wireless type universal serial bus apparatus according to claim 14, wherein the connection managing process releases the connection from the wireless type universal serial bus host when the wireless type universal serial bus host is connected to the wireless type universal serial bus apparatus, the wireless type universal serial bus host is powered off, and the wireless type universal serial bus apparatus is powered on, and to switch the state of the wireless type universal serial bus apparatus to the dormant state when there is no available wireless type universal serial bus host near the wireless type universal serial bus apparatus.

18. The wireless type universal serial bus apparatus according to claim 14, wherein the power managing process releases the connection from the wireless type universal serial bus host when the wireless type universal serial bus host and the wireless type universal serial bus apparatus are powered off, and to check whether the recharging is completed.

19. The wireless type universal serial bus apparatus according to claim 14, wherein the power managing process checks whether the recharging is completed when the wireless type universal serial bus host is powered on and the wireless type universal serial bus apparatus is powered off.