Adjusting an electronic display based on light sensing

• US 9,477,083 B2
• Filed: 12/01/2014
• Issued: 10/25/2016
• Est. Priority Date: 12/01/2014
• Status: Active Grant

• Current Assignee: Visteon Global Technologies Incorporated (Visteon Corporation)
• Original Assignee: Visteon Global Technologies Incorporated (Visteon Corporation)
• Inventors: Weindorf, Paul Fredrick Luther, Kornacki, James Joseph
• Primary Examiner(s): Philogene, Haissa
• Assistant Examiner(s): Alaeddini, Borna
• Application Number:
  US14/556,903
• Publication Number:
  US 20160157324A1
• Time in Patent Office: 694 Days
• Field of Search: 315 76- 84, 315149-158, 315/185.R, 315/291
• US Class Current: 1/1
• CPC Class Codes: B60Q 3/18 for varying the light intensity
• CPC Class Codes: B60Q 3/80 Circuits; Control arrangements for dashboards B60Q3/16; for mass transit vehicles B60Q3/47
• CPC Class Codes: G02B 2027/0118 comprising devices for improving the contrast of the display / brillance control visibility
• CPC Class Codes: G02B 27/01 Head-up displays
• CPC Class Codes: G02B 27/0101 characterised by optical features G02B27/0172 takes precedence
• CPC Class Codes: H05B 47/11 by determining the brightness or colour temperature of ambient light
• CPC Class Codes: Y02B 20/40 Control techniques providing energy savings, e.g. smart controller or presence detection

Abstract

A system for adjusting an electronic display is provided herein. The system includes a forward looking light sensor receiver to logarithmically receive a first light information from a forward looking light sensor; an ambient light sensor receiver to logarithmically receive a second light information from an ambient light sensor; and an adjuster to adjust a luminance of the electronic display based on a combination of the first light information and the second light information.

Claims

1. A system for adjusting an electronic display, comprising:

a forward looking light sensor receiver to logarithmically receive a first light information from a forward looking light sensor;

an ambient light sensor receiver to logarithmically receive a second light information from an ambient light sensor; and

an adjuster to adjust a luminance of the electronic display based on a combination of the first light information and the second light information, and

the adjuster is further configured to perform the combination by summing the first light information and the second light information in log form, to produce an output, and the output is employed with a gain factor table to produce the adjustment of the luminance.

2. The system according to claim 1, wherein the first information and the second information are respectively transformed via an analog-to-digital (A/D) process.

3. The system according to claim 2, wherein the first information, after undergoing the A/D process, is combined with a display user bias to produce an output.

4. The system according to claim 3 wherein the output is combined with a transformed version of the second information to produce a gain factor.

5. The system according to claim 4, wherein the gain factor is employed to perform the adjustment of the electronic display.

6. The system according to claim 5, wherein the gain factor is multiplied by a primary gain factor, the primary gain factor being generated independent from the second information, and the multiplied product being employed to adjust the electronic display.

7. The system according to claim 5, wherein the gain factor is correlated with a constant via a predefined lookup table, and the correlated constant is employed to produce a new gain factor to adjust the electronic display.

8. The system according to claim 2, wherein the transformed first information is converted to an index number.

9. The system according to claim 2, wherein a defined expression is summed with the first information and transformed second information to produce a value, the value being employed to determine a gain factor.