Storage of video stream multiplexed with random access playback after variable time delay

• US 8,463,110 B2
• Filed: 10/27/2009
• Issued: 06/11/2013
• Est. Priority Date: 12/23/1997
• Status: Expired due to Fees

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: O'Connor, Dennis M
• Primary Examiner(s): Chevalier, Robert
• Application Number:
  US12/589,653
• Publication Number:
  US 20100046914A1
• Time in Patent Office: 1,323 Days
• Field of Search: 386/235, 386/248, 386/298, 386/323, 386/326, 386/328, 386/353, 386/355
• US Class Current: 386/298
• CPC Class Codes: G11B 2020/10962 wherein both recording and playback take place simultaneously
• CPC Class Codes: G11B 2220/218 Write-once discs
• CPC Class Codes: G11B 2220/2516 Hard disks
• CPC Class Codes: G11B 2220/2545 CDs
• CPC Class Codes: G11B 2220/2562 DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs
• CPC Class Codes: G11B 2220/455 said record carriers being in one device and being used as primary and secondary/backup media, e.g. HDD-DVD combo device, or as source and target media, e.g. PC and portable player
• CPC Class Codes: G11B 2220/61 wherein solid state memory is used for storing A/V content storing computer data in solid state memories G06F
• CPC Class Codes: G11B 27/034 on discs G11B27/036, G11B27/038 take precedence
• CPC Class Codes: G11B 27/105 of operating discs
• CPC Class Codes: H04N 21/4147 PVR [Personal Video Recorder] H04N5/76 takes precedence ; arrangements for broadcast with accumulation-type receivers H04H20/40
• CPC Class Codes: H04N 5/76 Television signal recording
• CPC Class Codes: H04N 5/781 on disks or drums
• CPC Class Codes: H04N 5/85 on discs or drums
• CPC Class Codes: H04N 5/907 using static stores, e.g. storage tubes or semiconductor memories H04N5/91 takes precedence

Abstract

A method comprising, receiving a live video stream; recording the live video stream as a stored video stream; shifting the stored video stream as a time-delayed video stream; reading the time-delayed video stream; and playing back the time-delayed video stream whenever the time delay is greater than a predetermined threshold or playing back the live video stream whenever the time delay is less than the predetermined threshold.

Claims

1. A method comprising:

receiving a live video stream;

recording the live video stream as a stored video stream;

shifting the stored video stream as a time-delayed video stream;

reading the time-delayed video stream; and

playing back the time-delayed video stream whenever the time delay is greater than a predetermined threshold or playing back the live video stream whenever the time delay is less than the predetermined threshold.

2. The method of claim 1 further comprising multiplexing the recording and the reading.

3. The method of claim 1 wherein a rate of playing back the time-delayed video stream is changed.

4. The method of claim 1 wherein portions of the stored video stream are skipped.

5. The method of claim 1 wherein the live video stream is digitized before recording.

6. The method of claim 1 wherein the live video stream is compressed before recording and the time-delayed video stream is decompressed before reading.

7. The method of claim 1 wherein the live video stream is buffered before recording and the time-delayed video stream is buffered before reading.

8. The method of claim 1 wherein the time delay is variable over time.

9. The method of claim 1 wherein the time delay is specified by a user.

10. The method of claim 1 wherein a rate of playing back the time-delayed video stream is faster than a rate of storing the live video stream.

11. The method of claim 1 wherein a rate of playing back the time-delayed video stream is slower than a rate of storing the live video stream.

12. The method of claim 1 wherein the reading of the time-delayed video stream comprises random access.

13. The method of claim 1 wherein the playing back of the time-delayed video stream comprises random access.

14. The method of claim 1 wherein the predetermined threshold is specified by a user.

15. A method comprising:

receiving a video stream;

alternately storing the received video stream and retrieving the stored video stream;

shifting the stored video stream from the received video stream by a time delay;

playing back the shifted video stream until the time delay is less than a predetermined threshold, and then playing back the received video stream instead.

16. The method of claim 15 wherein the storing and the playing back are multiplexed.