Adjusting a head-up display (HUD) based on light sensing

Patent metadata

Field	Value
Publication number	US-9709805-B2
Application number	US-201414557036-A
Country	US
Kind code	B2
Filing date	Dec 1, 2014
Priority date	Dec 1, 2014
Publication date	Jul 18, 2017
Grant date	Jul 18, 2017

Abstract

A system for adjusting a heads-up display (HUD) is disclosed herein. The system includes a forward looking light sensor receiver to logarithmically receive a first light information from a forward looking light sensor; and an adjuster to adjust a luminance of the HUD based on the first light information. A method or process may be employed in a similar fashion. The adjuster may be implemented by employing a lookup table, or by employing analog values to perform a transformation relied upon for the adjustment.

First claim

We claim:

1. A system for adjusting a heads-up display (HUD), comprising:
a forward looking light sensor receiver to logarithmically receive a first light information from a forward looking light sensor; and
an adjuster to adjust a luminance of the HUD based on the first light information, and
wherein the first light information undergoes an analog-to-digital transformation to produce a digital version of the first light transformation,
the digital version of the first light information is transformed independent a linear transformation of data, with the range of adjustment being based on a logarithmic range, to produce a transformed output,
and after the digital version of the first light information is transformed, the transformed output is multiplied by cross-referencing a user bias amount associated with the HUD, with the multiplied output being employed by the adjuster to adjust the luminance.

2. The system according to claim 1 , wherein the first information, after undergoing the A/D conversion, is combined with a display user bias to produce an output.

3. The system according to claim 2 , wherein the first information, after undergoing the A/D conversion, is cross-referenced with a lookup table to retrieve a constant.

4. The system according to claim 2 , wherein the output is employed to perform the adjustment of the HUD via a transformation.

5. The system according to claim 3 , wherein the constant is employed to perform the adjustment of the HUD via a transformation.

6. The system according to claim 4 , wherein the transformation is based on a Silverstein relationship.

7. The system according to claim 5 , wherein the transformation is based on a Silverstein relationship.

Assignees

• Visteon Global Tech Inc

Inventors

• Weindorf Paul Fredrick Luther
• Kornacki James Joseph

Classifications

• H05B47/11

  by determining the brightness or colour temperature of ambient light · CPC title

• G09G3/3406

  Control of illumination source (illumination devices structurally associated with liquid crystal cells G02F1/1336) · CPC title

• G02B27/01

  Head-up displays · CPC title

• B60Q3/18

  for varying the light intensity · CPC title

• G02B27/0101 Primary

  characterised by optical features (G02B27/0172 takes precedence) · CPC title