定价： 570元 / 折扣价： 485 元 加购物车

This standard specifies a media-level, point-to-point, 12-channel, full-duplex, electrical/optical interface, with each channel operating at 500 Mbit/s or 1 Gbit/s. Multimode (MM) fiber cables, and single-mode (SM) fiber cables, are used for distances up to1 km when carrying the HIPPI-6400-PH protocol. Differential signals are used on the electrical side.

定价： 570元 / 折扣价： 485 元 加购物车

Specifies test methods for media characteristics of optical disks used for information processing systems and for information storage.

定价： 570元 / 折扣价： 485 元 加购物车

Describes X.25 Data Transfer Phase (DTP), which facilitates: (a) interworking with X.25/X.31 subnetworks; and (b) provision of the data-transfer aspects of the OSI CONS in the frame relay end points (terminals).

定价： 570元 / 折扣价： 485 元 加购物车

This standard provides the information necessary to enable mechanical and magnetic interchangeability for reels of 1/2-inch-wide unrecorded magnetic tape between information processing systems, communication systems, and associated equipment utilizing American National Standard for Information systems - Coded character sets - 7-bit american national standard code for information interchange (7-bit ASCII), ANSI X3.4-1986, and amendments thereto. This standard deals solely with magnetic tape for digital recording and supports and complements American National Standards on recorded magnetic tape for information interchange.

定价： 570元 / 折扣价： 485 元 加购物车

Specifies definitions of essential concepts, the environment in which the characteristics shall be tested, the environments in which the cartridge shall be operated and stored, the mechanical, physical and dimensional characteristics of the case and of the optical disk, the optical characteristics and the recording characteristics for recording the information once and for reading it many times, so as to provide physical interchangeability between data processing systems, the format for the physical disposition of the tracks and sectors, the error correction codes, the modulation methods used for recording and the quality of the recorded signals.

定价： 1500元 / 折扣价： 1275 元 加购物车

Specifies the physical and magnetic characteristics of an 8 mm wide magnetic tape cartridge to enable interchangeability of such cartridges. It also provides a format and recording method, thus allowing, together with ISO 1001 for Magnetic Tape Labelling, full data interchange by means of such magnetic tape cartridges

定价： 1358元 / 折扣价： 1155 元 加购物车

Defines a bit-preserving (lossless) compression method for coding image bit-planes and is particularly suitable for bi-level (two-tone, including black-white) images. Specifies requirements and test methods and gives datastream examples.

定价： 1339元 / 折扣价： 1139 元 加购物车

Specifies the physical and magnetic characteristics of an 8 mm wide magnetic tape cartridge to enable interchangeability of such cartridges. Also specifies the quality of the recorded signals, the format and the recording method.

定价： 1358元 / 折扣价： 1155 元 加购物车

Specifies the physical and magnetic characteristics of a 3,81 mm wide magnetic tape cartridge to enable interchangeability of such cartridges. Also specifies the quality of the recorded signals, the recorded format and the recording method.

定价： 1500元 / 折扣价： 1275 元 加购物车

This International Standard specifies the conditions for conformance testing; the environments in which the cartridges are to be operated and stored; the mechanical, physical and dimensional characteristics of the case and of the cartridges, so as to provide mechanical interchangeability between the data processing systems; the format of the information on the disk, both embossed and user-written, including the physical disposition of the tracks and sectors, the error correction codes, and the modulation method used; the characteristics ofthe embossed information on the disk; the magneto-optical characteristics of the disk, enabling processing systems to write onto the di.

定价： 1500元 / 折扣价： 1275 元 加购物车

Specifies a general framework for testing conformance to a computer graphics standard. The general framework described in this standard addresses the following six components: (a) conformance in the standard itself; (b) test requirements document, defining what shall be tested for a computer graphics standard; (c) test specifications document, addressing the test technique and the content of each test; (d) test method, defining the implementation of the test specification document, including the test software; (e) test procedures, defining the application the test software, which consists of the procedures to be used in conformance testing; and (f) the establishment of test services.

定价： 902元 / 折扣价： 767 元 加购物车

Defines a bit-preserving (lossless) compression method for coding image bit-planes and is particularly suitable for bi-level (two-tone, including black-white) images. Specifies requirements and test methods and gives datastream examples.

定价： 1187元 / 折扣价： 1009 元 加购物车

定价： 1500元 / 折扣价： 1275 元 加购物车

Specifies the system layer of the coding. Was developed principally to support the combination of the video and audio coding methods defined in ISO/IEC 11172-2 and ISO/IEC 11172-3. The system layer supports the following basic functions: the synchronization of multiple compressed streams on playback, the interleaving of multiple compressed streams into a single stream, the initializiation of buffering for playback start up, continuous buffer management, and time identification.

定价： 1339元 / 折扣价： 1139 元 加购物车