Color management for web server based applications

• US 9,076,367 B2
• Filed: 09/07/2012
• Issued: 07/07/2015
• Est. Priority Date: 09/07/2012
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Apple Inc.
• Inventors: Chu, Alan, Lai, Sing Yeung, Sung, On Loy
• Primary Examiner(s): Zarka, David
• Assistant Examiner(s): KRAVITZ, BRIAN S
• Application Number:
  US13/607,653
• Publication Number:
  US 20140071149A1
• Time in Patent Office: 1,033 Days
• Field of Search: 345/589
• US Class Current: 1/1
• CPC Class Codes: G06F 3/14 Digital output to display device ; Cooperation and interconnection of the display device with other functional units
• CPC Class Codes: G09G 2370/022 Centralised management of display operation, e.g. in a server instead of locally
• CPC Class Codes: G09G 2370/027 Arrangements and methods specific for the display of internet documents
• CPC Class Codes: G09G 5/02 characterised by the way in which colour is displayed details of colour display specific for CRTs G09G1/28; specific for flat matrix panels other than liquid crystal displays G09G3/2003; specific for liquid crystal displays G09G3/3607

Abstract

Method and apparatus for color management of documents retrieved and manipulated by a server based application and displayed on a client device through a browser application. Page elements of documents are manipulated to provide consistent and/or accurate color reproduction on the client device. Pages include untagged images, images tagged with color profiles, and tagged or untagged page elements specified by hex color values. Color values for images and untagged page elements specified by hex color values are adjusted by the server application before transmission to the client device to account for properties of browser applications and operating systems of different client devices.

Claims

1. A method of managing colors for displaying a page at a client device, the method comprising:

at a server;

receiving, from the client device, i) a command to retrieve the page

and ii) an identifier corresponding to a type of web browser on the client device;

determining, based on the identifier, whether the web browser supports color management of images;

when the web browser supports color management of images;

preserving a current color profile of a page element of the page;

when the web browser does not support color management of images;

associating a color profile to an untagged page element of the page by converting a color value of the untagged page element of the page according to the color profile, wherein associating the color profile allows for a consistent display of color at the web browser; and

transmitting the page to the client device.

2. The method of claim 1, wherein the color profile is an International Color Consortium (ICC) sRGB color profile.

3. The method of claim 1, wherein the color value of the page element is a World Wide Web Consortium (W3C) Cascading Style Sheet (CSS) RGB triple of hexadecimal values.

4. The method of claim 1, wherein the page includes a plurality of page elements corresponding to images of the page.

5. The method of claim 1, wherein the untagged page element does not include an accompanying color profile before the converting of the color value of the untagged page element.

6. The method of claim 1, wherein the page element is a cascading style sheet (CSS) graphical element.

7. The method of claim 1, wherein the color value corresponds to a previous color profile associated with the page element.

8. The method of claim 1, wherein the server is configured to transmit both original page elements and modified page elements to the client device.

9. An apparatus for managing colors of a page to be displayed at a client device, the apparatus comprising:

a processor; and

a memory storing instructions that, when executed by the processor, cause the apparatus to perform steps that include;

receiving, from the client device, i) a command to retrieve the page

and ii) an identifier corresponding to a type of web browser on the client device;

determining, based on the identifier, whether the web browser supports color management of images;

when the web browser supports color management of images;

preserving a current color profile of a page element of the page;

when the web browser does not support color management of images;

associating a color profile to an untagged page element of the page by converting a color value of the untagged page element of the page according to the color profile, wherein associating the color profile allows for a consistent display of color at the web browser; and

transmitting the page to the client device.

10. The apparatus of claim 9, wherein the color profile is an International Color Consortium (ICC) sRGB color profile.

11. The apparatus of claim 9, wherein the

page includes a plurality of page elements corresponding to images of the page.

12. The apparatus of claim 9, wherein the page element is a cascading style sheet (CSS) graphical element.

13. The apparatus of claim 9, wherein the untagged page element does not include an accompanying color profile before the converting of the color value of the untagged page element.

14. The apparatus of claim 9, wherein the color profile corresponds to a device specific color profile.

15. The apparatus of claim 9, wherein the color value corresponds to a previous color profile associated with the page element.

16. The apparatus of claim 9, wherein both original page elements and modified page elements are transmitted to the client device.

17. A non-transitory computer readable medium configured to store instructions that, when executed by a processor of a computing device, cause the computing device to perform steps that include:

receiving, from a client device, i) a command to retrieve the page and ii) an identifier corresponding to a type of web browser on the client device;

determining, based on the identifier, whether the web browser supports color management of images;

when the web browser supports color management of images;

preserving a current color profile of a page element of the page;

when the web browser does not support color management of images;

associating a color profile to an untagged page element of the page

by converting a color value of the untagged page element of the page according to the color profile, wherein associating the color profile allows for a consistent display of color at the web browser; and

transmitting the page to the client device.

18. The non-transitory computer readable medium of claim 17, wherein the color profile is an International Color Consortium (ICC) sRGB color profile.

19. The non-transitory computer readable medium of claim 17, wherein the color value of the page element is a World Wide Web Consortium (W3C) Cascading Style Sheet (CSS) RGB triple of hexadecimal values.

20. The non-transitory computer readable medium of claim 17, wherein the color profile corresponds to a device specific color profile.

21. The non-transitory computer readable medium of claim 17, wherein the untagged page element does not include an accompanying color profile before the converting of the color value of the untagged page element.

22. The non-transitory computer readable medium of claim 17, wherein the color profile corresponds to a device specific color profile.

23. The non-transitory computer readable medium of claim 17, wherein the color value corresponds to a previous color profile associated with the page element.

24. The non-transitory computer readable medium of claim 17, wherein the steps further include transmitting both original page elements and modified page elements to the client device.