data rate


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Related to data rate: Data transfer rate, Double data rate

data rate

[′dad·ə ‚rāt]
(communications)
The number of digital bits per second that are recorded or retrieved from a data storage device during the transfer of a large data block.

data rate

(communications, unit)
(Or "data ransfer rate", "transmission rate") The amount of data transferred per second by a communications channel or a computing or storage device.

Data rate is measured in units of bits per second (written "b/s" or "bps"), bytes per second (Bps), or baud.

When applied to data rate, the multiplier prefixes "kilo-", "mega-", "giga-", etc. (and their abbreviations, "k", "M", "G", etc.) always denote powers of 1000. For example, 64 kbps is 64,000 bits per second. This contrasts with units of storage where they stand for powers of 1024, e.g. 1 KB = 1024 bytes.

data rate

(1) The speed at which data is transferred within the computer or between a peripheral device and the computer, measured in bytes per second. See transfer rate and space/time.

(2) The speed at which audio and video files are encoded (compressed), measured in bits per second (see bit rate).

(3) The transmission speed of a network. For example, 100Base-T Ethernet is rated at 100 Mbps (megabits per second). Also called "bit rate." See space/time.
References in periodicals archive ?
produces good video and audio at normal cable modem and DSL data rates
Data rate change can also be a determining factor of the network bandwidth required to support a real-time disaster recovery solution, and used to determine server load, the number of servers that can be connected to a fiber array without impacting SAN performance, and how many writes a new application is creating on a server.
Automatic network formation, dynamic ingress/egress, automatic hub hand-off, automatic data rate adjustments and dynamically assigned independent data rates (per node) have all been verified through laboratory test.
6 Gbps data rate provides unmatched test quality and a 50 percent cost advantage over competitive solutions, with a performance margin that will allow for testing future GDDR.
Enabling data rates of up to 384kbps in a mobile environment, the PCI3800 is fully compliant with GSM series 4, 5 and 11.
CableLabs(R) has issued a series of specifications that enable cable operators to offer significantly higher data rates to their broadband customers.
This report forecasts the increase in broadband data rates and discusses the applications, especially IP Video, driving the increase.