Directory for multi-page SVG document

• US 7,055,092 B2
• Filed: 12/05/2001
• Issued: 05/30/2006
• Est. Priority Date: 12/05/2001
• Status: Expired due to Fees

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Carcerano, Christopher John, Wood, Loren A., Yardumian, Richard Krikor
• Primary Examiner(s): HUYNH, CONG LAC T
• Application Number:
  US10/004,447
• Publication Number:
  US 20030126557A1
• Time in Patent Office: 1,637 Days
• Field of Search: 715/513, 715/501.1, 715/500, 715/838, 715/530, 715/846, 345/660, 345/838
• US Class Current: 715/234
• CPC Class Codes: G06F 40/114 Pagination
• CPC Class Codes: G06F 40/143 Markup, e.g. Standard Generalized Markup Language [SGML] or Document Type Definition [DTD]

Abstract

An XML-based document which includes text for plural pages also includes directory information which stores location pointers for each of the plural pages. Preferably, the XML-based document is a document that conforms to the scalable vector graphics (SVG) standard. An authoring tool and a viewer are disclosed.

Claims

1. A structured document stored in a computer-readable memory medium, the structured document comprising:

text for plural pages, wherein the text for each page is delimited by plural element types respectively defining at least one of vector graphic shapes of figures and text, and wherein each element type has an opening tag and a corresponding closing tag which collectively conform to a document type definition that defines rules for the plural element types; and

page-information text which is delimited by page-information element types each defining an identifier for a page and a location for the page in the structured document for the text for a corresponding page of the plural pages of the structured document;

wherein the location provides direct access to a page in the structured document independent of parsing of all of the plural pages of the structured document.

2. A structured document according to claim 1, further comprising page-directory text which includes the page-information text, the page-directory text being delimited by page-directory element types which contain at least one page-information element for each of the plural pages.

3. A structured document according to claim 2, further comprising directory-information text which includes the page-directory text, the directory-information text being delimited by directory-information element types that specify the number of the plural pages and which contains the page-directory elements.

4. A structured document according to claim 3, wherein the directory-information text farther includes thumbnail-information text that defines a graphic for each of the plural pages, the thumbnail-information text being delimited by thumbnail-information element types.

5. A structured document according to claim 3, farther comprising document-attribute text delimited by document-attribute element types and tat specify attributes of the document.

6. A structured document according to claim 4, further comprising thumbnail-directory text which includes the thumbnail-information text and which is delimited by thumbnail-directory element types.

7. A structured document according to claim 1, further comprising a directory-table-list element that includes the document-resource text and at least an indirect reference to the page-information text.

8. A structured document according to claim 7, further comprising document-directory-table text delimited by document-directory-table types and that provides location information of the directory-table-list text.

9. A structured document according to claim 1, wherein the page-information text is included in document-directory information stored in the structured document.

10. A structured document according to claim 9, wherein the document-directory information is stored at or near the end of the structured document.

11. A structured document according to claim 10, further comprising a directory-exists element delimited by directory-exists element types, the directory-exists elements directly or indirectly defining the location of the document-directory information, the directory-exists element being located at or near the beginning the structured document.

12. A structured document according to claim 1, wherein the structured document is comprised of an SVG-based document.

13. A structured document according to claim 1, further comprising document-resource text that includes a location pointer in the structured document for resources used by the plural pages in the structured document.

14. A viewer for rendering at least one of vector graphic shapes of figures and text based on a structured document including text for plural pages, wherein the text for each page is delimited by plural element types each having an opening tag and a corresponding closing tag which collectively conform to a document type definition that defines rules for the plural element types, comprising:

a parsing device that detects a current page from plural pages, obtains a location of text in the structured document corresponding to the current page in reference to page-information text in the structured document, wherein the page-information text includes an identifier for the current page and a location for the current page in the structured document, and parses text in the structured document at the location corresponding to the current page; and

an output device that outputs a vector graphic shape which is rendered on the basis of the text parsed by the parsing device.

15. A viewer according to claim 14, wherein said parsing device obtains a location of document-resource text in the structured document for resources used by the plural pages.

16. A method of rendering at least one of vector graphic shapes of figures and text based on a structured document including text for plural pages, wherein the text for each page is delimited by plural element types each having an opening tag and a corresponding closing tag which collectively conform to a document type definition that defines rules for the plural element types, comprising the steps of:

detecting a current page from plural pages,

obtaining a location of page-information text in the structured document, wherein the page-information text includes an identifier for the current page and a location for the current page in the structured document,

parsing text at the location in the structured document corresponding to the current page,

outputting a vector graphic shape which is rendered on the basis of the parsed page description text.

17. A method according to claim 16, farther comprising a step of obtaining a location of document-resource text in the structured document for resources used by the plural pages.

18. Computer readable medium for storing a program which performs a method of rendering at least one of vector graphic shapes of figures and text based on a structured document including text for plural pages, wherein the text for each page is delimited by plural element types each having an opening tag and a corresponding closing tag which collectively conform to a document type definition that defines rules for the plural element types, the method comprising the steps of:

detecting a current page from plural pages,

obtaining a location of page-information text in the structured document, wherein the page information text includes an identifier for the current page and a location for the current page in the structured document,

parsing text at the location in the structured document corresponding to the current page, and

outputting a vector graphic shape which is rendered on the basis of the parsed page description text.

19. Computer readable medium according to claim 18, wherein the method further comprises a step of obtaining a location of document-resource text in the structured document for resources used by the plural pages.