METHOD, APPARATUS AND SYSTEM FOR DISPLAYING VIDEO DATA

• US 20090136213A1
• Filed: 10/10/2008
• Published: 05/28/2009
• Est. Priority Date: 11/27/2007
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Liu, Xin Yu, Calisa, Rajanish
• Granted Patent: US 8,155,503 B2
• Time in Patent Office: Days
• US Class Current: 386/248
• CPC Class Codes: G06Q 10/06316 Sequencing of tasks or work
• CPC Class Codes: H04N 21/21 Server components or server architectures
• CPC Class Codes: H04N 21/21805 enabling multiple viewpoints, e.g. using a plurality of cameras
• CPC Class Codes: H04N 21/23 Processing of content or additional data; Elementary server operations; Server middleware
• CPC Class Codes: H04N 21/2387 Stream processing in response to a playback request from an end-user, e.g. for trick-play
• CPC Class Codes: H04N 21/26616 for merging a unicast channel into a multicast channel, e.g. in a VOD application, when a client served by unicast channel catches up a multicast channel to save bandwidth data multicast over packet-switching network H04L12/18
• CPC Class Codes: H04N 21/2665 Gathering content from different sources, e.g. Internet and satellite
• CPC Class Codes: H04N 21/2747 Remote storage of video programs received via the downstream path, e.g. from the server
• CPC Class Codes: H04N 21/43072 of multiple content streams on the same device
• CPC Class Codes: H04N 21/4312 involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations
• CPC Class Codes: H04N 21/4314 for fitting data in a restricted space on the screen, e.g. EPG data in a rectangular grid
• CPC Class Codes: H04N 21/4325 by playing back content from the storage medium reproduction of recorded television signals H04N5/76; reproduction of recorded television signals H04N9/79
• CPC Class Codes: H04N 7/17318 Direct or substantially direct transmission and handling of requests
• CPC Class Codes: H04N 7/181 for receiving images from a plurality of remote sources

Abstract

A method (400) of displaying video data using a video recording system (100). The method (400) records a first stream of video data captured by a first camera (e.g., 103) and a first event associated with the first camera (103). The method records a second stream of video data captured by a second camera (e.g., 104) and a second event associated with the second camera (104). A playback speed is determined based at least on a difference between a current play time position and a time position of a nearest one of the first event and the second event. The first stream and the second stream of video data are displayed in a synchronised manner. The first stream of video data and the second stream of video data are displayed at the playback speed.

Claims

1. A method of displaying video data using a video recording system, said method comprising the steps:

recording a first stream of video data captured by a first camera;

recording a first event associated with said first camera;

recording a second stream of video data captured by a second camera;

recording a second event associated with said second camera;

determining a playback speed based at least on a difference between a current play time position and a time position of a nearest one of said first event and said second event; and

displaying said first stream and said second stream of video data in a synchronised manner, wherein said first stream of video data and said second stream of video data are displayed at said playback speed.

2. A method according to claim 1, wherein said first stream of video data is highlighted when the current play time position is near the time position of the first event.

3. A method according to claim 1, wherein said playback speed is a variable speed.

4. A method according to claim 1, wherein said playback speed is proportional to the distance between a next event and the current play time.

5. A method according to claim 4, wherein the playback speed is capped at a pre-determined limit.

6. A method according to claim 1, wherein said playback speed is pre-determined.

7. A method according to claim 1, wherein said playback is a specified fixed rate.

8. An apparatus for displaying video data using a video recording system, said apparatus comprising:

first stream recording means for recording a first stream of video data captured by a first camera;

first event recording means for recording a first event associated with said first camera;

second stream recording means for recording a second stream of video data captured by a second camera;

second event recording means for recording a second event associated with said second camera;

determining means for determining a playback speed based at least on a difference between a current play time position and a time position of a nearest one of said first event and said second event; and

display means for displaying said first stream and said second stream of video data in a synchronised manner, wherein said first stream of video data and said second stream of video data are displayed at said playback speed.

9. A computer readable medium, having a computer program recorded thereon, where the program is configured to make a computer execute a procedure to display video data using a video recording system, said program comprising:

code for recording a first stream of video data captured by a first camera;

code for recording a first event associated with said first camera;

code for recording a second stream of video data captured by a second camera;

code for recording a second event associated with said second camera;

code for determining a playback speed based at least on a difference between a current play time position and a time position of a nearest one of said first event and said second event; and

code for displaying said first stream and said second stream of video data in a synchronised manner, wherein said first stream of video data and said second stream of video data are displayed at said playback speed.