Method and apparatus for regulating power to data collection master device

• US 20040060985A1
• Filed: 09/16/2003
• Published: 04/01/2004
• Est. Priority Date: 09/22/2000
• Status: Active Grant

• Current Assignee: Symbol Technologies, Inc. (Zebra Technologies Corporation)
• Original Assignee: Symbol Technologies, Inc. (Zebra Technologies Corporation)
• Inventors: Feng, Chen
• Granted Patent: US 6,978,934 B2
• Time in Patent Office: Days
• US Class Current: 235/454
• CPC Class Codes: G06K 7/10584 Source control
• CPC Class Codes: G06K 7/10851 Circuits for pulse shaping, amplifying, eliminating noise signals, checking the function of the sensing device basic electronic circuitry H03

Abstract

A method and apparatus are provided for reducing power consumption in a data collection device. The method includes providing a power detector in an interface component of the data collection device and sensing the power delivered to the scan engine component of the device using the power detector. The power delivered to at least a portion of the interface component is selectively reduced according to the sensed power delivered to the scan engine component.

Claims

1. A system that powers a master-slave device arrangement comprising:

a power source that powers a master device via a slave device connected thereto; and

a power detector that senses power provided to the master device and based thereupon regulates a power to the slave device.

2. The system of claim 1, the power detector is part of the slave device.

3. The system of claim 1, the master device is a scan engine of a data collection device.

4. The system of claim 1, the power detector comprises a comparator.

5. The system of claim 3, the slave device is a part of an interface component of the data collection device.

6. The system of claim 5, the slave device comprises a communication transceiver.

7. The system of claim 4, the comparator compares an indicator of power provided to the master device with a threshold value.

8. The system of claim 4, the power detector comprises a switch that selectively regulates power to the slave device based on an output signal from the comparator.

9. The system of claim 4, the power detector reduces the power to the slave device.

10. The system of claim 4, the power detector increases the power to the slave device.

11. The system of claim 6, the comparator comprises a current sensor that provides a signal being representative of the current delivered to the master device.

12. The system of claim 7, the indicator is an electrical current.

13. A system that powers a master-slave device arrangement comprising:

means for powering a master device via a slave device connected thereto;

sensing means for detecting amount of power provided to the master device; and

means for regulating power to the slave device based on an output of the sensing means.

14. A method for powering a master-slave device arrangement comprising:

providing a master device operatively connected to a slave device, the slave device having a power detector that senses power provided to the master device; and

regulating power to the slave device based at least in part on an output of the power detector.

15. The method of claim 14 further comprising, selectively reducing power to the slave device.

16. The method of claim 14 further comprising, detecting an indicator of the power provided to the master device.

17. The method of claim 14 further comprising, comparing the indicator to a threshold value.

18. The method of claim 14 further comprising, increasing or decreasing power to the slave device based on the comparing act.

19. The method of claim 14 further comprising, providing a data scan engine as part of the master slave.

20. The method of claim 19 further comprising, providing an interface component of the data collection device as part of the slave device.