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Trusted timestamping is the process of securely keeping track of the creation and modification time of a document. Security here means that no one—not even the owner of the document—should be able to change it once it has been recorded provided that the timestamper's integrity is never compromised. The administrative aspect involves setting ...
The term "timestamp" derives from rubber stamps used in offices to stamp the current date, and sometimes time, in ink on paper documents, to record when the document was received. Common examples of this type of timestamp are a postmark on a letter or the "in" and "out" times on a time card. With the advent of digital data systems, the term has ...
The Precision Time Protocol (PTP) is a protocol for clock synchronization throughout a computer network with relatively high precision and therefore potentially high accuracy. In a local area network (LAN), accuracy can be sub-microsecond – making it suitable for measurement and control systems. [1] PTP is used to synchronize financial ...
The year 2038 problem (also known as Y2038, [1] Y2K38, Y2K38 superbug or the Epochalypse[2][3]) is a time computing problem that leaves some computer systems unable to represent times after 03:14:07 UTC on 19 January 2038. The problem exists in systems which measure Unix time —the number of seconds elapsed since the Unix epoch (00:00:00 UTC ...
Presentation time stamps (PTS) are embedded in MPEG transport streams to precisely signal when each audio and video segment is to be presented and avoid AV-sync errors. . However, these timestamps are often added after the video undergoes frame synchronization, format conversion and preprocessing, and thus the lip sync errors created by these operations will not be corrected by the addition ...
4.0. 3× optical zoom, 4× digital zoom. Olympus Europe, archived from the original on 3 December 2008, retrieved 11 December 2008. Olympus C-5000 Zoom. 5.0. 3× optical zoom, 4× digital zoom. 2003. Olympus America, archived from the original on 17 October 2007, retrieved 11 December 2008.
Launched in April 2024, the Insta360 X4 is the successor to the Insta360 X3 and other X Series cameras. It's a waterproof 360-degree action camera with 8K resolution at 30fps, 5.7K at 60fps and 4K at 100fps, adding higher resolution and frame rates to 360-degree capture.
Epoch (computing) In computing, an epoch is a fixed date and time used as a reference from which a computer measures system time. Most computer systems determine time as a number representing the seconds removed from a particular arbitrary date and time. For instance, Unix and POSIX measure time as the number of seconds that have passed since ...