Method and system for resizing the subtitles of a video

• US 5,805,153 A
• Filed: 11/28/1995
• Issued: 09/08/1998
• Est. Priority Date: 11/28/1995
• Status: Expired due to Term

• Current Assignee: Oracle America, Inc. (Oracle Corporation)
• Original Assignee: Sun Microsystems Incorporated (Oracle Corporation)
• Inventors: Nielsen, Jakob
• Primary Examiner(s): Flynn, Nathan J.
• Application Number:
  US08/565,179
• Time in Patent Office: 1,015 Days
• Field of Search: 348/7, 348/467, 348/468, 348/6, 348/8, 348/9, 348/10, 348/12, 348/13, 348/14, 348/16, 348/17, 348/460, 348/461, 348/463, 348/465, 348/473, 348/474, 348/476, 348/475, 348/477, 348/478 , 348/479, 348/552, 348/553, 348/554, 348/561, 348/562, 348/563, 348/564, 348/565-570, 348/588
• US Class Current: 725/37
• CPC Class Codes: H04N 21/232 Content retrieval operation locally within server, e.g. reading video streams from disk arrays storage management G06F3/0604; details of querying and searching of video data from a database G06F16/739
• CPC Class Codes: H04N 21/2343 involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements video transcoding H04N19/40; media packet handling at the source H04L65/762
• CPC Class Codes: H04N 21/235 Processing of additional data, e.g. scrambling of additional data or processing content descriptors
• CPC Class Codes: H04N 21/4143 embedded in a Personal Computer [PC]
• CPC Class Codes: H04N 21/4356 by altering the spatial resolution, e.g. to reformat additional data on a handheld device, attached to the STB
• CPC Class Codes: H04N 21/47 End-user applications
• CPC Class Codes: H04N 21/4858 for modifying screen layout parameters, e.g. fonts, size of the windows
• CPC Class Codes: H04N 21/4884 for displaying subtitles
• CPC Class Codes: H04N 21/6581 Reference data, e.g. a movie identifier for ordering a movie or a product identifier in a home shopping application

Abstract

The preferred embodiment of the present invention provides a method and system for resizing subtitles of a video without resizing the video image itself. The preferred embodiment is typically user initiated. First, a user requests a video from a server. The server transmits two data streams, a video/audio (hereinafter referred to as "video") data stream and a text data stream, over the network to the client computer. The client receives and sends both data streams to a viewer program (e.g., a browser). The browser combines the two data streams into a single window as seen by the user.

Since the video and subtitles are sent as two separate streams of information, upon user request the browser is able to resize the subtitles and the subtitle viewing area independently from resizing the video image. The browser resizes the subtitles by rendering the subtitles in a user selected font size. In this way, the problems associated with the prior art technique of proportional resizing are avoided while the benefits of limited data transmission over the network are maintained.

Claims

1. A method, executable in a computer system, for displaying subtitle data associated with a video, the computer system including a client computer and a server computer, the server computer storing at least one set of video data and at least one set of subtitle data associated with the video data, the method comprising the steps of:

selecting a video to be displayed on the client computer;

sending a request, from the client computer to the server computer, requesting the server to download the selected video and its associated subtitle data;

receiving the request at the server computer;

in response to receiving the request, retrieving the requested video data and retrieving subtitle data associated with the video data;

sending the retrieved video data at reduced resolution and the retrieved subtitle data from the server computer to the client computer as two separate streams of data;

receiving the two streams of data at the client computer;

displaying the received video data in a first area;

retrieving information stored on the client computer on a preferred font size in which to render the subtitle data to at least partially compensated for the reduced resolution; and

displaying the subtitle data in the preferred font size in a second area, whereby the subtitle data in said second area is resized separately from the video data displayed in the first area.

2. The method of claim 1 wherein the request includes a list of languages in which to display the subtitle data, wherein the list is ordered from a most preferred language in which to display the subtitle data to a least preferred language in which to display the subtitle data.

3. The method of claim 2 further comprising the steps of:

determining whether the subtitle data for the requested video is stored in one of the languages on the list;

when the determination indicates that the subtitle data for the requested video is available in one of the languages on the list, retrieving the subtitle data in the most preferred available language; and

when the determination indicates that the subtitle data for the requested video is not available in one of the languages on the list, then retrieving the subtitle data in a default language.

4. The method of claim 1 wherein the step of sending the retrieved subtitle data includes the step of encoding the subtitle data in one of an ASCII encoding and a unicode encoding.

5. The method of claim 1 in which the video data is organized into a plurality of frames with each frame of video having an associated frame number and in which the subtitle data is organized into a plurality of subtitle strings with each subtitle string having an associated frame number corresponding to the frame of video with which the subtitle string is displayed, and wherein the step of displaying the subtitle data further includes the steps of:

retrieving the frame number associated with the next frame of video to be displayed; and

retrieving the subtitle string whose frame number corresponds to the retrieved frame number associated with the next frame of video to be displayed.

6. The method of claim 1 wherein the step of displaying the subtitle data further includes the steps of:

retrieving a preferred font size in which to display the subtitle data; and

using the retrieved font size to render the subtitle data in a subtitle data area independently from a video data area located on the display screen.

7. The method of claim 1 further comprising the steps of:

receiving a request to change the preferred font size to a new font size;

changing the preferred font size to the new font size; and

displaying the subtitle data in the new font size, whereby the size of the displayed video data remains unchanged.

8. A computer system for displaying subtitle data associated with a video, the computer system including a client computer and a server computer, the server computer storing at least one set of video data and at least one set of subtitle data associated with the video data, the system comprising:

a module configured to select a video to be displayed on the client computer;

a module configured to send a request, from the client computer to the server computer, requesting the server to download the selected video and its associated subtitle data;

a module configured to receive the request at the server computer;

a module configured to retrieve the requested video data and retrieving subtitle data associated with the video data, in response to receiving the request;

a module configured to send the retrieved video data at reduced resolution and the retrieved subtitle data from the server computer to the client computer as two separate streams of data;

a module configured to receive the two streams of data at the client computer;

a module configured to display the received video data in a first area;

a module configured to retrieve information stored on the client computer on a preferred font size in which to render the subtitle data to at least partially compensate for the reduced resolution; and

a module configured to display the subtitle data in the preferred font size in a second area, whereby the subtitle data in said second area is resized separately from the video data displayed in the first area.

9. The system of claim 8 wherein the request includes a list of languages in which to display the subtitle data, wherein the list is ordered from a most preferred language in which to display the subtitle data to a least preferred language in which to display the subtitle data.

10. The system of claim 9 further comprising:

a module configured to determine whether the subtitle data for the requested video is stored in one of the languages on the list;

a module configured to retrieve the subtitle data in the most preferred available language, actuated when the determination indicates that the subtitle data for the requested video is available in one of the languages on the list; and

a module configured to retrieve the subtitle data in a default language, actuated when the determination indicates that the subtitle data for the requested video is not available in one of the languages on the list.

11. The system of claim 8 wherein the module configured to send the retrieved subtitle data includes a module configured to encode the subtitle data in one of an ASCII encoding and a unicode encoding.

12. The system of claim 8 in which the video data is organized into a plurality of frames with each frame of video having an associated frame number and in which the subtitle data is organized into a plurality of subtitle strings with each subtitle string having an associated frame number corresponding to the frame of video with which the subtitle string is displayed, and wherein the module configured to display the subtitle data further includes modules configured to:

retrieve the frame number associated with the next frame of video to be displayed; and

retrieve the subtitle string whose frame number corresponds to the retrieved frame number associated with the next frame of video to be displayed.

13. The system of claim 8 wherein the module configured to display the subtitle data further includes modules configured to:

retrieve a preferred font size in which to display the subtitle data; and

render the subtitle data in the retrieved font size.

14. The system of claim 8 further comprising modules configured to:

receive a request to change the preferred font size to a new font size;

change the preferred font size to the new font size; and

display the subtitle data in the new font size, whereby the size of the displayed video data remains unchanged.

15. A computer program for displaying subtitle data associated with a video, the program comprising:

code that selects a video to be displayed on a client computer;

code that sends a request, from the client computer to a server computer, requesting the server to download the selected video and its associated subtitle data;

code the receives the request at the server computer;

code that retrieves the requested video data and retrieving subtitle data associated with the video data, in response to receiving the request;

code that sends the retrieved video data at reduced resolution and the retrieved subtitle data from the server computer to the client computer as two separate streams of data;

code that receives the two streams of data at the client computer;

code that displays the received video data in a first area;

code that retrieves information from the client computer on a preferred font size in which to render the subtitle data to at least partially compensate for the reduced resolution; and

code that displays the subtitle data in the preferred font size in a second area, whereby the subtitle data in said second area is resized separately from the video data displayed in the first area,

wherein the code resides on a tangible medium.

16. The program of claim 15 wherein the request includes a list of languages in which to display the subtitle data, wherein the list is ordered from a most preferred language in which to display the subtitle data to a least preferred language in which to display the subtitle data.

17. The program of claim 16 further comprising:

code that determines whether the subtitle data for the requested video is stored in one of the languages on the list;

code that retrieves the subtitle data in the most preferred available language, actuated when the determination indicates that the subtitle data for the requested video is available in one of the languages on the list; and

code that retrieves the subtitle data in a default language, actuated when the determination indicates that the subtitle data for the requested video is not available in one of the languages on the list,

wherein the code resides on a tangible medium.

18. The program of claim 15 wherein the code that sends the retrieved subtitle data includes code that encodes the subtitle data in one of an ASCII encoding and a unicode encoding.

19. The program of claim 15 in which the video data is organized into a plurality of frames with each frame of video having an associated frame number and in which the subtitle data is organized into a plurality of subtitle strings with each subtitle string having an associated frame number corresponding to the frame of video with which the subtitle string is displayed, and wherein the code that displays the subtitle data further includes code that:

retrieves the frame number associated with the next frame of video to be displayed; and

retrieves the subtitle string whose frame number corresponds to the retrieved frame number associated with the next frame of video to be displayed.

20. The program of claim 15 wherein the code that displays the subtitle data further includes code that:

retrieves a preferred font size in which to display the subtitle data; and

renders the subtitle data in the retrieved font size.

21. The program of claim 15 further comprising code that:

receives a request to change the preferred font size to a new font size;

changes the preferred font size to the new font size; and

displays the subtitle data in the new font size, whereby the size of the displayed video data remains unchanged.