Method for command transmission and configuration to sensor implemented by ambient light source

• US 10,051,713 B1
• Filed: 09/21/2017
• Issued: 08/14/2018
• Est. Priority Date: 04/20/2017
• Status: Active Grant

• Current Assignee: Delta Electronics Incorporated
• Original Assignee: Delta Electronics Incorporated
• Inventors: Tseng, Chao-Chun, Liao, Min-Nan
• Primary Examiner(s): Tran, Thuy Vinh
• Application Number:
  US15/711,553
• Time in Patent Office: 327 Days
• Field of Search: 315149, 315308
• CPC Class Codes: H05B 45/12 using optical feedback
• CPC Class Codes: H05B 47/11 by determining the brightness or colour temperature of ambient light
• CPC Class Codes: H05B 47/16 by timing means
• CPC Class Codes: H05B 47/19 via wireless transmission
• CPC Class Codes: H05B 47/195 the transmission using visible or infrared light
• CPC Class Codes: H05B 47/22 with communication between the lamps and a central unit
• CPC Class Codes: Y02B 20/30 Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
• CPC Class Codes: Y02B 20/40 Control techniques providing energy savings, e.g. smart controller or presence detection

Abstract

A method for command transmission and configuration to sensor implemented by ambient light source is disclosed and adopted by a sensor having a light-sensing unit. The sensor collects ambient light time series data through the light-sensing unit, and extracts valid brightness toggle data therefrom. Next, the sensor determines if the obtained brightness toggle data matches with a triggering condition of a pre-stored command. When the obtained brightness toggle data matches with the triggering condition, the sensor outputs a flashing signal through its display unit and further determines if receiving a confirmed brightness toggle data or not. When receiving the confirmed brightness toggle data within a waiting period after outputting the flashing signal, the sensor automatically performs the pre-stored command corresponding to the matched triggering condition.

Claims

1. A method for command transmission and configuration to sensor implemented by ambient light source adopted by a sensor having a light-sensing unit, the method comprising steps of:

(a) collecting ambient light time series data through the light-sensing unit, and extracting valid brightness toggle data from the ambient light time series data;

(b) determining if the brightness toggle data matches with a triggering condition of a pre-stored command;

(c) outputting a flashing signal through a display unit when the brightness toggle data matches with the triggering condition;

(d) determining if receiving a confirmed brightness toggle data or not after step c; and

(e) performing the pre-stored command corresponding to the matched triggering condition when receiving the confirmed brightness toggle data within a waiting period after outputting the flashing signal.

2. The method in claim 1, further comprising a step of:

(b1) discarding the brightness toggle data if the brightness toggle data and the triggering condition is mismatched.

3. The method in claim 1, further comprising a step of:

(d1) discarding the brightness toggle data if the confirmed brightness toggle data are not received within the waiting period.

4. The method in claim 1, wherein each brightness toggle datum is composed of a high-voltage differential signal and a low-voltage differential signal adjacent to the high-voltage differential signal, and the confirmed switch datum is a confirmed high-voltage differential signal or a confirmed low-voltage differential signal.

5. The method in claim 4, wherein a number of times of blinking of the flashing signal is the same as a number of the brightness toggle data.

6. The method in claim 4, wherein in the step (b), determining if the brightness toggle data matches with the triggering condition of the pre-stored command when a number of the brightness toggle data equals to a value recorded in the triggering condition.

7. The method in claim 4, wherein the step (a) further comprises steps of:

(a01) collecting and temporarily storing the ambient light time series data;

(a02) executing a differential encoding process for the stored ambient light time series date to obtain the high-voltage differential signals and the low-voltage differential signals;

(a03) executing a filtering process for the high-voltage differential signals and the low-voltage differential signals; and

(a04) sequentially selecting one of the filtered high-voltage differential signals and one of the filtered low-voltage differential signals adjacent to the selected high-voltage differential signal, and setting the selected high-voltage differential signal and the selected low-voltage differential signal as a set of the brightness toggle data, wherein the brightness toggle data do not overlap.

8. The method in claim 7, wherein the sensor records a maximum difference and a minimum difference, and the filtering process is executed to keep the high-voltage differential signals and the low-voltage differential signals whose intensities are between the maximum difference and the minimum difference.

9. The method in claim 8, wherein the maximum difference is defined by the maximum brightness or maximum darkness sensible by the light-sensing unit, and the minimum difference is defined by the minimum brightness or minimum darkness sensible by the light-sensing unit.

10. The method in claim 4, wherein the step (a) further comprises steps of:

(a11) collecting and temporarily storing the ambient light time series data;

(a12) executing a differential encoding process for the temporarily stored ambient light time series date to obtain the high-voltage differential signals and the low-voltage differential signals;

(a13) obtaining a difference threshold;

(a14) determining whether one or more differential signal sets have exceeded the differential threshold when the different threshold is not equal to the minimum differential, wherein each differential signal set comprises a high-voltage differential signal and adjacent low-voltage differential signal;

(a15) determining whether each of the different signal sets is valid when the there are many differential signal sets have exceeded the differential threshold; and

(a16) recording the differential signal sets as the brightness toggle data when the differential signal sets are valid, wherein the brightness toggle data do not overlap.

11. The method in claim 10, further comprising a step of:

(a141) decreasing the differential threshold when the differential signal sets do not exceed the differential threshold and performing the step (a14) again.

12. The method in claim 10, further comprising a step of:

(a151) decreasing the differential threshold when the differential signal sets are invalid and performing the step (a14) again.

13. The method in claim 10, wherein in the step (a13), obtaining a maximum difference as the differential threshold.

14. The method in claim 13, wherein the maximum difference is defined by the maximum brightness or maximum darkness sensible by the light-sensing unit, and the minimum difference is defined by an absolute minimum of a differential signal that identifies the ambient light source changes from bright to dark or from dark to bright.

15. The method in claim 10, further comprising a step of:

(a17) recoding positive differential values of the high-voltage differential signals and negative differential values of the low-differential signals of the differential signal sets.

16. The method in claim 15, wherein a positive differential value of the confirmed high-voltage differential signal is the same as or similar to the positive differential value of the high-voltage differential signal of the differential signal sets or a negative differential value of the conformed low-voltage differential signal is the same as or similar to the negative differential value of the low-voltage differential signal of the differential signal sets.

17. The method in claim 10, wherein in the step (a15), determining whether the differential signal sets are valid within a time interval between each high-voltage differential signal and adjacent low-voltage differential signal being in a stable state.

18. The method in claim 10, wherein in the step (a15), determining whether the differential signal sets are valid within a time interval between the high-voltage differential signal and adjacent low-voltage differential signal being longer than a minimum time interval and shorter than a maximum time interval.

19. The method in claim 10, wherein the ambient light time series data further comprises a setup time before the primary differential signal and a sleep time after the last differential signal, and in the step (a15), determining the differential signal sets are valid when the setup time is longer than a predetermined setup time and the sleep time is longer than a predetermined sleep time.