Simultaneously viewing multiple camera angles

• US 10,433,002 B1
• Filed: 09/18/2018
• Issued: 10/01/2019
• Est. Priority Date: 12/25/2014
• Status: Active Grant

• Current Assignee: Dish Ukraine LLC (Dish Network Corporation)
• Original Assignee: Dish Ukraine LLC (Dish Network Corporation)
• Inventors: Kuplevakhsky, Andrey
• Primary Examiner(s): Harold, Jefferey F
• Assistant Examiner(s): Rahman, Mustafizur
• Application Number:
  US16/133,720
• Publication Number:
  US 20190327514A1
• Time in Patent Office: 378 Days
• Field of Search: 348515, 348564, 348565, 348521, 348500, 348516, 348513, 348706, 348711, 348718, 348719, 348723, 348725, 348739, 348785, 715203
• CPC Class Codes: H04N 21/21805 enabling multiple viewpoints, e.g. using a plurality of cameras
• CPC Class Codes: H04N 21/266 Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
• CPC Class Codes: H04N 21/43 Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware real-time communication protocols in data switching networks H04L65/00
• CPC Class Codes: H04N 21/4305 Synchronising client clock from received content stream, e.g. locking decoder clock with encoder clock, extraction of the PCR packets arrangements for synchronising receiver with transmitter by comparing receiver clock with transmitter clock H04L7/0012; arrangements for synchronising receiver with transmitter wherein the receiver takes measures against momentary loss of synchronisation H04L7/0083
• CPC Class Codes: H04N 21/43079 of additional data with content streams on multiple devices
• CPC Class Codes: H04N 21/4622 Retrieving content or additional data from different sources, e.g. from a broadcast channel and the Internet web site content organization and management for information retrieval from the Internet G06F16/958; transmission by internet of broadcast information H04H60/82; stock exchange data over packet-switching network H04L12/1804; push services including data channel over packet-switching network H04L12/1859
• CPC Class Codes: H04N 21/631 Multimode Transmission, e.g. transmitting basic layers and enhancement layers of the content over different transmission paths or transmitting with different error corrections, different keys or with different transmission protocols
• CPC Class Codes: H04N 21/8547 involving timestamps for synchronizing content

Abstract

Various devices, systems, products and methods for synchronizing video displayed on multiple display devices are presented. The systems, methods, devices and products described herein optionally utilize one or more techniques for synchronizing two or more displays of video of an event filmed from two or more cameras. Synchronization signals are optionally used to allow the video displays to be matched precisely to account for differences in display time, transmission time, delivery time and processing time.

Claims

1. A method for real-time synchronization of a plurality of different video streams comprising video of a same event, the method comprising:

receiving a first video stream and a second video stream that is different from the first video stream, both the first video stream and the second video stream corresponding to video of a same event, the first video stream including a synchronization signal;

first transmitting the first video stream to a first display device for display thereon;

second transmitting the second video stream to a second display device for display thereon, the second display device being different from the first display device;

detecting the synchronization signal, during display of the first video stream by the first display device, by using a sensor to monitor the first video stream; and

adjusting timing of the second video stream in real-time in response to detecting the synchronization signal, such that adjusting the timing causes display of the second video stream by the second display device to be synchronized with display of the first video stream by the first display device.

2. The method of claim 1, wherein the adjusting timing comprises:

detecting, in accordance with the detecting the synchronization signal, a time difference between the second video stream and the display of the first video stream by the first display device; and

adjusting displaying or transmitting of the second video stream to accommodate for the detected time difference.

3. The method of claim 2, wherein detecting the time difference comprises:

detecting a first timestamp in the first video stream corresponding to the synchronization signal; and

identifying a second timestamp in the second video stream that corresponds to the first time stamp.

4. The method of claim 2, wherein the adjusting timing comprises:

skipping displaying or transmitting of a portion of the second video stream to accommodate for the detected time difference.

5. The method of claim 2, wherein the adjusting timing comprises:

changing a frame rate of a portion of the second video stream to accommodate for the detected time difference.

6. The method of claim 1, wherein:

the second display device is in communication with the sensor; and

the adjusting timing is performed by the second display device.

7. The method of claim 1, wherein:

the second transmitting is performed by a television receiver in communication with the sensor; and

the adjusting timing comprises adjusting timing of the second video stream as second transmitted by the television receiver to the second display device for display thereon.

8. The method of claim 1, wherein:

the first video stream corresponds to video of the same event captured from a first camera angle; and

the second video stream corresponds to video of the same event captured from a second camera angle.

9. The method of claim 1, wherein the adjusting timing is performed during display of the second video stream by the second display device.

10. The method of claim 1, wherein the synchronization signal is imperceptible to a human user.

11. The method of claim 1, wherein the synchronization signal is aperiodic.

12. A television receiver comprising:

one or more processors; and

a memory communicatively coupled with and readable by the one or more processors and having stored therein processor-readable instructions that, when executed by the one or more processors, cause the one or more processors to perform operations including;

receiving a first video stream and a second video stream that is different from the first video stream, both the first video stream and the second video stream corresponding to video of a same event, the first video stream including a synchronization signal;

first transmitting the first video stream to a first display device for display thereon;

second transmitting the second video stream to a second display device for display thereon, the second display device being different from the first display device;

detecting the synchronization signal, during display of the first video stream by the first display device, by using a sensor to monitor the first video stream; and

adjusting timing of the second video stream in real-time in response to detecting the synchronization signal, such that adjusting the timing causes display of the second video stream by the second display device to be synchronized with display of the first video stream by the first display device.

13. The television receiver of claim 12, further comprising:

a first circuit to receive the first video stream from a first network;

a second circuit to receive the second video stream from a second network;

one or more data output connections to transmit the first video stream and the second video stream.

14. The television receiver of claim 12, wherein the one or more processors perform the adjusting timing by:

detecting, in accordance with the detecting the synchronization signal, a time difference between the second video stream and the display of the first video stream by the first display device; and

adjusting displaying or transmitting of the second video stream to accommodate for the detected time difference.

15. The television receiver of claim 14, wherein the one or more processors perform the adjusting timing by:

skipping displaying or transmitting of a portion of the second video stream to accommodate for the detected time difference.

16. The television receiver of claim 14, wherein the one or more processors perform the adjusting timing by:

changing a frame rate of a portion of the second video stream to accommodate for the detected time difference.

17. The television receiver of claim 12, wherein:

the television receiver is in communication with the sensor; and

the one or more processors perform the adjusting timing by adjusting timing of the second video stream as second transmitted by the television receiver to the second display device for display thereon.

18. The television receiver of claim 12, wherein:

the first video stream corresponds to video of the same event captured from a first camera angle; and

the second video stream corresponds to video of the same event captured from a second camera angle.

19. The television receiver of claim 12, wherein the one or more processors perform the adjusting timing during display of the second video stream by the second display device.

20. A non-transitory processor-readable medium for real-time synchronization of a plurality of different video streams comprising video of a same event, the medium comprising processor-readable instructions configured to cause one or more processors to perform operations including:

receiving a first video stream and a second video stream that is different from the first video stream, both the first video stream and the second video stream corresponding to video of a same event, the first video stream including a synchronization signal;

first transmitting the first video stream to a first display device for display thereon;

second transmitting the second video stream to a second display device for display thereon, the second display device being different from the first display device;

detecting the synchronization signal, during display of the first video stream by the first display device, by using a sensor to monitor the first video stream; and

adjusting timing of the second video stream in real-time in response to detecting the synchronization signal, such that adjusting the timing causes display of the second video stream by the second display device to be synchronized with display of the first video stream by the first display device.