VIDEO-PREVIEWING METHODS AND SYSTEMS FOR PROVIDING PREVIEW OF A VIDEO AND MACHINE-READABLE STORAGE MEDIUMS THEREOF

• US 20140029915A1
• Filed: 07/11/2013
• Published: 01/30/2014
• Est. Priority Date: 07/27/2012
• Status: Active Grant

• Current Assignee: Wistron Corporation
• Original Assignee: Wistron Corporation
• Inventors: Lin, Zhao-Yuan
• Granted Patent: US 9,270,928 B2
• Time in Patent Office: Days
• US Class Current: 386/241
• CPC Class Codes: G06F 16/00 Information retrieval; Database structures therefor; File system structures therefor
• CPC Class Codes: G06F 16/745 the internal structure of a single video sequence
• CPC Class Codes: G11B 27/00 Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
• CPC Class Codes: H04N 21/41407 embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop constructional details of equipment or arrangements specially adapted for portable computer application G06F1/1626; arrangements specially adapted for mobile receivers in broadcast systems H04H20/57
• CPC Class Codes: H04N 21/42204 User interfaces specially adapted for controlling a client device through a remote control device; Remote control devices therefor constructive details of casings for the remote control device H01H9/0235; user interfaces for controlling a tuning device of a television receiver through a remote control H03J9/00; remote control of peripheral devices connected to a television receiver through the remote control device of the television receiver H04B1/205
• CPC Class Codes: H04N 21/42209 for displaying non-command information, e.g. electronic program guide [EPG], e-mail, messages or a second television channel
• CPC Class Codes: H04N 21/42224 Touch pad or touch panel provided on the remote control
• CPC Class Codes: H04N 21/440281 by altering the temporal resolution, e.g. by frame skipping television signal recording using magnetic recording on tape for reproducing at a rate different from the recording rate H04N5/783
• CPC Class Codes: H04N 21/47 End-user applications
• CPC Class Codes: H04N 21/47217 for controlling playback functions for recorded or on-demand content, e.g. using progress bars, mode or play-point indicators or bookmarks specific graphical features in visual interfaces H04N21/4312
• CPC Class Codes: H04N 5/00 Details of television systems scanning details or combination thereof with generation of supply voltages H04N3/00
• CPC Class Codes: H04N 5/91 Television signal processing therefor

Abstract

Video previewing methods for electronic devices with a touch-sensitive display unit for providing preview of a video to be played are provided. First, a resolution of the touch-sensitive display unit of the electronic device is detected. Thereafter, a preview screen is generated on the touch-sensitive display unit according to the resolution of the touch-sensitive display unit, wherein the preview screen includes M level frame bars and each of the M level frame bars displays N video frames, and N for each of the M level frame bars is determined based on the resolution of the touch-sensitive display unit, where M≧1 and N≧1.

Claims

1. A video-previewing method for providing preview of a video to be played for an electronic device with a touch-sensitive display unit, the method comprising:

detecting a resolution of the touch-sensitive display unit of the electronic device; and

generating a preview screen corresponding to the video on the touch-sensitive display unit according to the resolution of the touch-sensitive display unit, wherein the preview screen includes M level frame bars and each of the M level frame bars displays N video frames,

wherein the value of the frame number N of video frames for each of the M level frame bars is determined based on the resolution of the touch-sensitive display unit, where M≧

1 and N≧

1.

2. The video-previewing method of claim 1, further comprising:

detecting a video length of the video; and

determining the value of the level number M of levels according to the video length of the video.

3. The video-previewing method of claim 2, further comprising:

providing first, second and third parameters;

determining a maximum value of the N according to the resolution of the touch-sensitive display unit and the first parameter; and

determining the value of the level number M according to the video length of the video, the second parameter and the third parameter,

wherein the first parameter represents an expected resolution, the second parameter represents a minimum expected gap between each two of the N video frames and the third parameter represents a maximum expected gap between each two of the N video frames.

4. The video-previewing method of claim 3, wherein the step of determining the value of the level number M according to the video length of the video, the second parameter and the third parameters further comprises:

obtaining a first count value according to the video length of the video and the second parameter and determining whether the first count value has exceeded the maximum value of the frame number N;

when the first count value has not exceeded the maximum value of the frame number N, determining the value of the level number M is set to be 1 and setting the value of the frame number N to the first count value;

when the first count value has exceeded the maximum value of the frame number N, obtaining a second count value according to the video length of the video and the third parameter and determining whether the second count value has exceeded the maximum value of the frame number N; and

when the second count value has not exceeded the maximum value of the frame number N, determining the value of the level number M is set to be 1 and setting the value of the frame number N to the second count value.

5. The video-previewing of claim 4, further comprising:

when the second count value has exceeded the maximum value of the frame number N, determining the value of the level number M is set to be at least 2 and setting the value of the frame number N for a first level frame bar among the M level frame bars to the maximum value of the frame number N.

6. The video-previewing method of claim 5, wherein the maximum value of the level number M is set to be 3.

7. The video-previewing method of claim 5, further comprising:

dividing the video into the N video frames based on the video length of the video; and

obtaining a third count value according to a frame length of each of the N frames and the second parameter and determining whether the third count value has exceeded the maximum value of the frame number N;

when the third count value has not exceeded the maximum value of the frame number N, determining the value of the level number M is set to be 2 and setting the value of the frame number N for a second level frame bar among the M level frame bars to the third count value;

when the third count value has exceeded the maximum value of the frame number N, obtaining a fourth count value according to the video length of the video and the third parameter and determining whether the fourth count value has exceeded the maximum value of the frame number N; and

when the fourth count value has not exceeded the maximum value of the frame number N, determining the value of the level number M is set to be 2 and setting the value of the frame number N for the second level frame bar among the M level frame bars N to the fourth count value.

8. The video-previewing method of claim 7, further comprising:

when the fourth count value has exceeded the maximum value of the frame number N, determining the value of the level number M is set to be 3 and setting the value of the frame number N for the second level frame bar among the M level frame bars to the maximum value of the frame number N.

9. The video-previewing method of claim 8, further comprising:

dividing the video frame into N sub-frames based on the video length of the video; and

obtaining a fifth count value according to a sub-frame length of each of the N sub-frames and the second parameter and determining whether the fifth count value has exceeded the maximum value of the frame number N;

when the fifth count value has not exceeded the maximum value of the frame number N, determining the value of the level number M is set to be 3 and setting the value of the frame number N for a third level frame bar among the M level frame bars to the fifth count value;

when the fifth count value has exceeded the maximum value of the frame number N, obtaining a sixth count value according to the sub-frame length and the sixth parameter and determining whether the sixth count value has exceeded the maximum value of the frame number N; and

when the sixth count value has not exceeded the maximum value of the frame number N, determining the value of the level number M is set to be 3 and setting the third level frame bar among the M level frame bars to the sixth count value.

10. The video-previewing method of claim 9, further comprising:

when determining that the value of the level number M is set to be 3, determining the third level frame bar among the M level frame bars according to an unconditional cutting or an unconditional rounding-up method.

11. A video-previewing system for providing preview of a video to be played, the system comprising:

a touch-sensitive display unit, having a resolution;

a parameter generation unit, detecting the resolution of the touch-sensitive display unit; and

a preview screen generation unit coupled to the parameter generation unit and the touch-sensitive display unit, generating a preview screen corresponding to the video on the touch-sensitive display unit according to the resolution of the touch-sensitive display unit detected by the parameter generation unit, wherein the preview screen includes M level frame bars and each of the M level frame bars displays N video frames,

wherein the value of the frame number N of video frames for each of the M level frame bars is determined based on the resolution of the touch-sensitive display unit, where M≧

1 and N≧

1.

12. The video-previewing system of claim 11, wherein the parameter generation unit further detects a video length of the video and the preview screen generation unit further determines the value of the level number M of levels according to the video length of the video.

13. The video-previewing system of claim 12, wherein the parameter generation unit further provides first, second and third parameters and the preview screen generation unit further determines a maximum value of the N according to the resolution of the touch-sensitive display unit and the first parameter;

and determines the value of the level number M according to the video length of the video, the second parameter and the third parameter, wherein the first parameter represents an expected resolution, the second parameter represents a minimum expected gap between each two of the N video frames and the third parameter represents a maximum expected gap between each two of the N video frames.

14. The video-previewing system of claim 13, wherein the preview screen generation unit further obtains a first count value according to the video length of the video and the second parameter and determines whether the first count value has exceeded the maximum value of the frame number N preview screen generation unit, wherein when the first count value has not exceeded the maximum value of the frame number N, the preview screen generation unit determines the value of the level number M is set to be 1 and sets the value of the frame number N to the first count value;

and when the first count value has exceeded the maximum value of the frame number N, the preview screen generation unit further obtains a second count value according to the video length of the video and the third parameter and determines whether the second count value has exceeded the maximum value of the frame number N, and determines the value of the level number M is set to be 1 and setting the value of the frame number N to the second count value when the second count value has not exceeded the maximum value of the frame number N.

15. The video-previewing system of claim 14, wherein the preview screen generation unit further determines the value of the level number M is set to be at least 2 and sets the value of the frame number N for a first level frame bar among the M level frame bars to the maximum value of the frame number N when the second count value has exceeded the maximum value of the frame number N.

16. The video-previewing system of claim 15, wherein the maximum value of the level number M is set to be 3.

17. The video-previewing system of claim 15, wherein the preview screen generation unit further divides the video into the N video frames based on the video length of the video, obtains a third count value according to a frame length of each of the N frames and the second parameter and determines whether the third count value has exceeded the maximum value of the frame number N;

wherein when the third count value has not exceeded the maximum value of the frame number N, the preview screen generation unit determines the value of the level number M is set to be 2 and sets the value of the frame number N for a second level frame bar among the M level frame bars to the third count value; and

when the third count value has exceeded the maximum value of the frame number N, the preview screen generation unit obtains a fourth count value according to the video length of the video and the third parameter and determines whether the fourth count value has exceeded the maximum value of the frame number N; and

when the fourth count value has not exceeded the maximum value of the frame number N, the preview screen generation unit further determines the value of the level number M is set to be 2 and sets the value of the frame number N for the second level frame bar among the M level frame bars to the fourth count value.

18. The video-previewing system of claim 17, wherein the preview screen generation unit further determines the value of the level number M is set to be 3 and sets the value of the frame number N for the second level frame bar among the M level frame bars to the maximum value of the frame number N when the fourth count value has exceeded the maximum value of the frame number N.

19. The video-previewing system of claim 18, wherein the preview screen generation unit further divides the video frame into N sub-frames based on the video length of the video, obtains a fifth count value according to a sub-frame length of each of the N sub-frames and the second parameter and determines whether the fifth count value has exceeded the maximum value of the frame number N;

wherein when the fifth count value has not exceeded the maximum value of the frame number N, the preview screen generation unit determines the value of the level number M is set to be 3 and sets the value of the frame number N for a third level frame bar among the M level frame bars to the fifth count value;

when the fifth count value has exceeded the maximum value of the frame number N, the preview screen generation unit obtains a sixth count value according to the sub-frame length and the sixth parameter and determines whether the sixth count value has exceeded the maximum value of the frame number N; and

when the sixth count value has not exceeded the maximum value of the frame number N, the preview screen generation unit further determines the value of the level number M is set to be 3 and setting the third level frame bar among the M level frame bars to the sixth count value;

wherein the preview screen generation unit further determines the third level frame bar among the M level frame bars according to an unconditional cutting or an unconditional rounding-up method when determining that the value of the level number M is set to be 3.

20. A non-transitory machine-readable storage medium comprising a computer program, which means for driving a device to perform a video-previewing method for providing preview of a video to be played, wherein the device includes a touch-sensitive display unit and the video-previewing method comprises the steps of:

detecting a resolution of the touch-sensitive display unit; and

generating a preview screen corresponding to the video on the touch-sensitive display unit according to the resolution of the touch-sensitive display unit detected by the parameter generation unit,

wherein the preview screen includes M level frame bars and each of the M level frame bars displays N video frames, wherein the value of the frame number N of video frames for each of the M level frame bars is determined based on the resolution of the touch-sensitive display unit, where M≧

1 and N≧

1.