Misplaced Pages

Online (disambiguation)

Article snapshot taken from Wikipedia with creative commons attribution-sharealike license. Give it a read and then ask your questions in the chat. We can research this topic together.

MIDI time code ( MTC ) embeds the same timing information as standard SMPTE timecode as a series of small 'quarter-frame' MIDI messages. There is no provision for the user bits in the standard MIDI time code messages, and SysEx messages are used to carry this information instead. The quarter-frame messages are transmitted in a sequence of eight messages, thus a complete timecode value is specified every two frames. If the MIDI data stream is running close to capacity, the MTC data may arrive a little behind schedule which has the effect of introducing a small amount of jitter. In order to avoid this it is ideal to use a completely separate MIDI port for MTC data. Larger full-frame messages, which encapsulate a frame worth of timecode in a single message, are used to locate to a time while timecode is not running.

#849150

29-419: In computer technology and telecommunications, the term online refers to a state of having connectivity. Online may also refer to: Online In computer technology and telecommunications , online indicates a state of connectivity, and offline indicates a disconnected state. In modern terminology, this usually refers to an Internet connection , but (especially when expressed as "on line" or "on

58-414: A global broadcast. The following ID of 01 identifies this is a time code type message, and the second 01 indicates it is a full-time code message. The 4 bytes of time code follow. Although MIDI is generally little-endian, the 4 time code bytes follow in big-endian order, followed by a F7 "end of exclusive" byte. After a jump, the time clock stops until the first following quarter-frame message

87-423: A problem with the circuit as being on line , as opposed to the power source or end-point equipment. Since at least 1950, in computing , the terms on-line and off-line have been used to refer to whether machines, including computers and peripheral devices , are connected or not. Here is an excerpt from the 1950 book High-Speed Computing Devices : One example of a common use of these concepts with email

116-445: A purely online sexual relationship. He also conjectures that an online/offline distinction may be seen by people as "rather quaint and not quite comprehensible" within 10 years. This distinction between online and offline is sometimes inverted, with online concepts being used to define and to explain offline activities, rather than (as per the conventions of the desktop metaphor with its desktops, trash cans, folders, and so forth)

145-452: A server), but the user may not wish for Outlook to trigger that call whenever it is configured to check for mail. Another example of the use of these concepts is digital audio technology. A tape recorder , digital audio editor , or other device that is online is one whose clock is under the control of the clock of a synchronization master device. When the sync master commences playback, the online device automatically synchronizes itself to

174-467: A single 7-bit data value: 3 bits to identify the piece, and 4 bits of partial time code. When time is running forward, the piece numbers increment from 0–7; with the time that piece 0 is transmitted is the coded instant, and the remaining pieces are transmitted later. If the MIDI data stream is being rewound, the piece numbers count backward. Again, piece 0 is transmitted at the coded moment. The time code

203-413: A tape machine that is striped with SMPTE. For this to happen a SMPTE to MTC converter needs to be employed. It is possible for a tape machine to synchronise to an MTC signal (if converted to SMPTE), if the tape machine is able to 'slave' to incoming timecode via motor control, which is a rare feature. The MIDI time code is 32 bits long, of which 24 are used, while 8 bits are unused and always zero. Because

232-474: A two-bit flag value that identifies the rate of the timecode, specifying it as either: MTC distinguishes between film speed and video speed only by the rate at which timecode advances, not by the information contained in the timecode messages; thus, 29.97 frame/s dropframe is represented as 30 frame/s dropframe at 0.1% pulldown. MTC allows the synchronisation of a sequencer or DAW with other devices that can synchronise to MTC or for these devices to 'slave' to

261-458: Is a mail user agent (MUA) that can be instructed to be in either online or offline states. One such MUA is Microsoft Outlook . When online it will attempt to connect to mail servers (to check for new mail at regular intervals, for example), and when offline it will not attempt to make any such connection. The online or offline state of the MUA does not necessarily reflect the connection status between

290-492: Is also given by the prefixes " cyber " and "e", as in words " cyberspace ", " cybercrime ", " email ", and " e-commerce ". In contrast, "offline" can refer to either computing activities performed while disconnected from the Internet, or alternatives to Internet activities (such as shopping in brick-and-mortar stores). The term "offline" is sometimes used interchangeably with the acronym "IRL", meaning "in real life". During

319-434: Is reality (i.e., real life or "meatspace" ). Slater states that this distinction is "obviously far too simple". To support his argument that the distinctions in relationships are more complex than a simple dichotomy of online versus offline, he observes that some people draw no distinction between an online relationship, such as indulging in cybersex , and an offline relationship, such as being pen pals . He argues that even

SECTION 10

#1732794147850

348-409: Is received. When the time is running continuously, the 32-bit time code is broken into 8 4-bit pieces, and one piece is transmitted each quarter frame. I.e. 96—120 times per second, depending on the frame rate. Since it takes eight quarter frames for a complete time code message, the complete SMPTE time is updated every two frames. A quarter-frame messages consists of a status byte of 0xF1, followed by

377-439: Is termed as offline. In the context of file systems, "online" and "offline" are synonymous with "mounted" and "not mounted". For example, in file systems' resizing capabilities , "online grow" and "online shrink" respectively mean the ability to increase or decrease the space allocated to that file system without needing to unmount it. Online and offline distinctions have been generalised from computing and telecommunication into

406-476: The Internet Archive announced an offline server project intended to provide access to material on inexpensive servers that can be updated using USB sticks and SD cards. Likewise, offline storage is computer data storage that has no connection to the other systems until a connection is deliberately made. Additionally, an otherwise online system that is powered down may be considered offline. With

435-503: The telephone can be regarded as an online experience in some circumstances, and that the blurring of the distinctions between the uses of various technologies (such as PDA versus mobile phone, internet television versus internet, and telephone versus Voice over Internet Protocol ) has made it "impossible to use the term online meaningfully in the sense that was employed by the first generation of Internet research". Slater asserts that there are legal and regulatory pressures to reduce

464-403: The 19th century, the term on line was commonly used in both the railroad and telegraph industries. For railroads, a signal box would send messages down the line (track), via a telegraph line (cable), indicating the track's status: Train on line or Line clear . Telegraph linemen would refer to sending current through a line as direct on line or battery on line ; or they may refer to

493-399: The components are encoded in straight binary, not binary-coded decimal . Each component is assigned one byte: When there is a jump in the time code, a single full-time code is sent to synchronize attached equipment. This takes the form of a special global system exclusive message: The manufacturer ID of 7F indicates a real-time universal message, the channel of 7F indicates it is

522-409: The computer on which it is running and the Internet i.e. the computer itself may be online—connected to the Internet via a cable modem or other means—while Outlook is kept offline by the user, so that it makes no attempt to send or to receive messages. Similarly, a computer may be configured to employ a dial-up connection on demand (as when an application such as Outlook attempts to make a connection to

551-581: The distinction between online and offline, with a "general tendency to assimilate online to offline and erase the distinction," stressing, however, that this does not mean that online relationships are being reduced to pre-existing offline relationships. He conjectures that greater legal status may be assigned to online relationships (pointing out that contractual relationships, such as business transactions, online are already seen as just as "real" as their offline counterparts), although he states it to be hard to imagine courts awarding palimony to people who have had

580-435: The field of human interpersonal relationships. The distinction between what is considered online and what is considered offline has become a subject of study in the field of sociology . The distinction between online and offline is conventionally seen as the distinction between computer-mediated communication and face-to-face communication (e.g., face time ), respectively. Online is virtuality or cyberspace , and offline

609-431: The full-time code messages requires that the most significant bits of each byte are zero (valid MIDI data bytes), there are really only 28 available bits and 4 spare bits. Like most audiovisual timecodes such as SMPTE time code , it encodes only time of day, repeating each 24 hours. Time is given in units of hours, minutes, seconds, and frames . There may be 24, 25, or 30 frames per second. Unlike most other timecodes,

SECTION 20

#1732794147850

638-420: The growing communication tools and media, the words offline and online are used very frequently. If a person is active over a messaging tool and is able to accept the messages it is termed as online message and if the person is not available and the message is left to view when the person is back, it is termed as offline message. In the same context, the person's availability is termed as online and non-availability

667-622: The level of direct and indirect links, the maximum amount of local disc space allowed to be consumed, and the schedule on which local copies are checked to see whether they are up-to-date, are configurable for each individual Favourites entry. For communities that lack adequate Internet connectivity—such as developing countries, rural areas, and prisons—offline information stores such as WiderNet's eGranary Digital Library (a collection of approximately thirty million educational resources from more than two thousand web sites and hundreds of CD-ROMs) provide offline access to information. More recently,

696-527: The line") could refer to any piece of equipment or functional unit that is connected to a larger system. Being online means that the equipment or subsystem is connected, or that it is ready for use. "Online" has come to describe activities performed on and data available on the Internet , for example: " online identity ", " online predator ", " online gambling ", " online game ", " online shopping ", " online banking ", and " online learning ". A Similar meaning

725-513: The local copies are up-to-date at regular intervals or by checking that the local copies are up-to-date whenever the browser is switched to the online. One such web browser is Internet Explorer . When pages are added to the Favourites list, they can be marked to be "available for offline browsing". Internet Explorer will download local copies of both the marked page and, optionally, all of the pages that it links to. In Internet Explorer version 6,

754-405: The master and commences playing from the same point in the recording. A device that is offline uses no external clock reference and relies upon its own internal clock. When many devices are connected to a sync master it is often convenient, if one wants to hear just the output of one single device, to take it offline because, if the device is played back online, all synchronized devices have to locate

783-417: The online state. This can be useful when the computer is offline and connection to the Internet is impossible or undesirable. The pages are downloaded either implicitly into the web browser's own cache as a result of prior online browsing by the user or explicitly by a browser configured to keep local copies of certain web pages, which are updated when the browser is in the online state, either by checking that

812-557: The other way around. Several cartoons appearing in The New Yorker have satirized this. One includes Saint Peter asking for a username and a password before admitting a man into Heaven. Another illustrates "the offline store" where "All items are actual size!", shoppers may "Take it home as soon as you pay for it!", and "Merchandise may be handled prior to purchase!" MIDI timecode Unlike standard SMPTE timecode, MIDI timecode's quarter-frame, and full-frame messages carry

841-578: The playback point and wait for each other device to be in synchronization. (For related discussion, see MIDI timecode , Word clock , and recording system synchronization.) A third example of a common use of these concepts is a web browser that can be instructed to be in either online or offline states. The browser attempts to fetch pages from servers while only in the online state. In the offline state, or "offline mode", users can perform offline browsing , where pages can be browsed using local copies of those pages that have previously been downloaded while in

#849150