System and method for reading multifunctional electronic books on portable readers
A platform agnostic digital publication format that supports rendered and resizable text, illustrations and graphics, “read to me” features and interactive functionality. The format takes advantage of the alternate renditions feature of the OCF of the EPUB® specification and includes both a ShockWave Flash (SWF) based rendition and a HyperText Markup Language (HTML), Java Script (JS), Cascading Style Sheets (CSS) based implementation. In order to avoid duplicating large components (graphics, audio, etc.), files containing those components are not embedded in the SWF files, but are rather externally referenced by both the SWF and the HTML files. A strict and consistent folder structure and file-naming convention improves efficiency and reduces the potential for error.
1. A method for displaying an electronic publication comprising:
opening a root level folder in the electronic publication, wherein the root level folder is an Open eBook Publication Structure, OEBPS, folder;
retrieving an architecture file from the root level folder;
retrieving a data file in the electronic publication, wherein the data file contains JavaScript Object Notation, JSON, data
rendering a page of the electronic publication in accordance with instructions contained in the architecture file and the data file;
accessing an image folder in the electronic publication in accordance with instructions contained in the architecture file;
retrieving an image from the image folder;
displaying the image on the page in accordance with instructions contained in the architecture file and the data file;
accessing an audio folder in the electronic publication in accordance with instructions contained in the architecture file;
retrieving an audio file from the audio folder; and
playing the audio file in connection with the page in accordance with instructions contained in the architecture file and the data file.
2. The method according to claim 1 , further comprising opening a second root level folder, the second root level folder being a META-INF folder.
3. The method according to claim 1 , further comprising opening a JavaScript folder, the JavaScript folder containing JavaScript files.
4. The method according to claim 3 , further comprising executing interactivity functions in association with the page according to instructions contained in the JavaScript files.
5. The method according to claim 1 , further comprising:
opening a Cascading Style Sheet folder; and
applying styles to the page in accordance with Cascading Style Sheet files contained in the Cascading Style Sheet folder.
6. The method according to claim 1 , wherein the file is a SWF file, the method further comprising loading and executing page level SWF files for rendering the page, wherein links to the image and audio and image files are contained in the page level SWF files.
7. The method according to claim 1 , wherein the file is a HTML/JS file, the method further comprising rendering the page according to instructions contained in the HTML/JS file.
8. The method according to claim 1 , further comprises:
retrieving thumbnail images of pages of the electronic publication from a thumbnail folder; and
displaying the thumbnail images.
9. A reader for displaying an electronic publication comprising:
a display;
an audio subsystem capable of playing audio files;
a memory, the memory storing the electronic publication; and
control circuitry coupled to the display and coupled to the memory, the control circuitry operable to:
open a root level folder in the electronic publication, wherein the root level folder is an Open eBook Publication Structure, OEBPS, folder;
retrieve an architecture file from the root level folder;
retrieve a data file in the electronic publication, wherein the data file contains JavaScript Object Notation, JSON, data
render a page of the electronic publication on the display in accordance with instructions contained in the architecture file and the data file;
access an image folder in the electronic publication in accordance with instructions contained in the architecture file;
retrieve an image from the image folder;
display the image on the page displayed on the display in accordance with instructions contained in the architecture file and the data file;
access an audio folder in the electronic publication in accordance with instructions contained in the architecture file;
retrieve an audio file from the audio folder; and
play the audio file using the audio subsystem in accordance with instructions contained in the architecture file and the data file.
10. The reader according to claim 9 , wherein the control circuitry is further operable to open a second root level folder, the second root level folder being a META-INF folder.
11. The reader according to claim 9 , wherein the control circuitry is further operable to open a JavaScript folder, the JavaScript folder containing JavaScript files.
12. The reader according to claim 11 , wherein the control circuitry is further operable to execute interactivity functions in association with the page according to instructions contained in the JavaScript files.
13. The reader according to claim 9 , wherein the control circuitry is further operable to:
open a Cascading Style Sheet folder; and
apply styles to the page in accordance with Cascading Style Sheet files contained in the Cascading Style Sheet folder.
14. The reader according to claim 9 , wherein the file is a SWF file, wherein the control circuitry is further operable to load and execute page level SWF files for rendering the page, wherein links to the image and audio and image files are contained in the page level SWF files.
15. The reader according to claim 9 , wherein the file is a HTML/JS file, wherein the control circuitry is further operable to render the page according to instructions contained in the HTML/JS file.
16. The reader according to claim 9 , wherein the control circuitry is further operable to:
retrieve thumbnail images of pages of the electronic publication from a thumbnail folder; and
display the thumbnail images on the display.