double buffering


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double buffering

A programming technique that uses two buffers to speed up a computer that can overlap I/O with processing. Data in one buffer are being processed while the next set of data is read into the other one.

In streaming media applications, the data in one buffer is being sent to the sound or graphics card while the other buffer is being filled with more data from the source (Internet, local server, etc.).

When video is displayed on screen, the data in one buffer are being filled while the data in the other are being displayed. Full-motion video is speeded up when the function of moving the data between buffers is implemented in a hardware circuit rather than being performed by software. See video accelerator and buffering.


Double Buffers
Two buffers are commonly used to speed up program execution. Data are processed in one buffer while data are written into or read out of the other.
References in periodicals archive ?
To solve these problems, the CGS structure employs double buffering between a main thread for decoding and a sub-thread for intermediate-format conversion.
This is called double buffering and is a prevalent method of eliminating display flicker created when a single frame buffer is written to at the same time it is being read by the rendering system.
These include support for dual monitors by a single board, double-buffered resolutions up to 1280 x 1024 (with 1900 x 1200 to be announced soon), a 24-bit Z buffer, 24-bit color, double buffering, full stereo support, and local texture storage for up to 16MB.