Simultaneously viewing multiple camera angles

• US 10,110,946 B2
• Filed: 12/25/2014
• Issued: 10/23/2018
• Est. Priority Date: 12/25/2014
• Status: Active Grant

• Current Assignee: Dish Ukraine LLC (Dish Network Corporation)
• Original Assignee: EchoStar Ukraine LLC (Echostar Corporation)
• Inventors: Kuplevakhsky, Andrey
• Primary Examiner(s): Lonsberry, Hunter B
• Application Number:
  US15/538,438
• Publication Number:
  US 20170359612A1
• Time in Patent Office: 1,398 Days
• 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 video of an event from multiple cameras, the method comprising:

receiving a first video stream corresponding to video of the event from a first camera angle, the first video stream including a synchronization signal;

receiving a second video stream corresponding to video of the event from a second camera angle;

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

receiving a request to display the second video stream on a second display device different from the first display device;

transmitting the second video stream to the second display device; and

adjusting display of the second video stream in real-time to synchronize displays of the first video stream and the second video stream by;

monitoring a display of the first video signal using a sensor associated with the second display device; and

beginning displaying the second video stream upon detecting the synchronization signal in the first video stream by said sensor.

2. The method of claim 1, wherein adjusting display of the second video stream includes:

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

identifying a second timestamp in the second video stream;

determining a time difference between the first timestamp and the second timestamp; and

changing a timing of transmitting or displaying the second video stream to accommodate the time difference.

3. The method of claim 1, wherein the synchronization signal is at least one of a viewable signal in a video portion of the first video stream or an audible signal in an audio portion of the first video stream.

4. The method of claim 1, wherein adjusting display of the second video stream includes:

identifying a delay associated with displaying the second video stream; and

changing a timing of transmitting or displaying the second video stream to accommodate the delay.

5. The method of claim 1, wherein the first video stream is transmitted wirelessly to the first display device or the second video stream is transmitted wirelessly to the second display device.

6. The method of claim 1, wherein adjusting display of the second video stream includes:

delaying a transmission or display of a portion of the second video stream;

skipping displaying or transmitting the portion of the second video stream;

or

changing a frame rate of the portion of the second video stream.

7. The method of claim 1, further comprising:

transmitting a display signal to trigger displaying the second video stream on the second display device.

8. The method of claim 1, wherein the first video stream and the second video stream are each independently received via antenna, satellite, cable or data network.

9. 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 corresponding to video of an event from a first camera angle, the first video stream including a synchronization signal;

receiving a second video stream corresponding to video of the event from a second camera angle;

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

receiving a request to display the second video stream on a second display device different from the first display device;

transmitting the second video stream to the second display device;

adjusting display of the second video stream in real-time to synchronize displays of the first video stream and the second video stream by;

monitoring a display of the first video signal using a detector associated with the second display device; and

beginning displaying the second video stream upon detecting the synchronization signal in the first video stream by said detector.

10. The television receiver of claim 9, further comprising:

one or more receiver circuits for receiving at least one of the first video stream and the second video stream;

one or more data output connections for transmitting at least one of the first video stream and the second video stream.

11. The television receiver of claim 9, wherein adjusting display of the second video stream includes:

identifying a first timestamp in the first video stream;

identifying a second timestamp in the second video stream;

determining a time difference between the first timestamp and the second timestamp; and

changing a timing of transmitting or displaying at least one of the first video stream and the second video stream to accommodate the time difference.

12. The television receiver of claim 9, wherein the synchronization signal is at least one of a viewable signal in a video portion of the first video stream or an audible signal in an audio portion of the first video stream.

13. The television receiver of claim 9, wherein adjusting display of the second video stream includes:

identifying a delay associated with displaying at the second video stream; and

changing a timing of transmitting or displaying at the second video stream to accommodate the delay.

14. The television receiver of claim 9, wherein adjusting display of the second video stream includes:

delaying or skipping transmission or display of at least a second portion of the second video stream;

or

changing a frame rate of the portion of the second video stream.

15. The television receiver of claim 9, further comprising:

a synchronization signal sensor for monitoring a display of the synchronization signal by the first display device; and

/or

a synchronization signal generator for creating synchronization signals.

16. A non-transitory processor-readable medium for realtime synchronization of video from multiple cameras, the medium comprising processor-readable instructions configured to cause one or more processors to perform operations including:

receiving a first video stream corresponding to video of an event from a first camera angle, the first video stream including a synchronization signal;

receiving a second video stream corresponding to video of the event from a second camera angle;

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

transmitting the second video stream to the second display device different from the first display device;

adjusting display of the second video stream in real-time to synchronize displays of the first video stream and the second video stream by;

monitoring a display of the first video signal using a sensor associated with the second display device; and

beginning displaying the second video stream upon detecting the synchronization signal in the first video stream by said sensor.

17. The non-transitory processor-readable medium of claim 16, wherein adjusting display of the second video stream includes:

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

identifying a second timestamp in the second video stream;

determining a time difference between the first timestamp and the second timestamp; and

changing a timing of transmitting or displaying at least one of the first video stream and the second video stream to accommodate the time difference.

18. The non-transitory processor-readable medium of claim 16, wherein the synchronization signal is at least one of a viewable signal in a video portion of the first video stream or an audible signal in an audio portion of the first video stream.

19. The non-transitory processor-readable medium of claim 16, wherein adjusting display of the second video stream includes:

identifying a delay associated with displaying the second video stream; and

changing a timing of transmitting or displaying the second video stream to accommodate the delay.

20. The non-transitory processor-readable medium of claim 16, wherein adjusting display of the second video stream includes:

delaying or skipping transmission or display of at least a first portion of the first video stream or a second portion of the second video stream;

or

changing a frame rate of the first portion of the first video stream or the second portion of the second video stream.

21. The non-transitory processor-readable medium of claim 16, further comprising processor-readable instructions that cause the one or more processors to:

receive a request to display the second video stream on a second display device.