Fujitsu V01 manual 127

Appendixes

which has a fixed length of 188 bytes. The TS method is used for transmission in an environment such as ATM communication or digital broadcasting where errors can occur.

TSC (Transport Scrambling Control)

A field in MPEG-2 TS header information, which indicates the scrambling mode of a stream. The TSC of a stream that is encrypted with the BISS method is defined as 2.

TTL (Time To Live)

Abbreviation of Time To Live, which indicates the survival time of a packet on a network. If a packet sent to a network happens to enter a loop because of a setting error on a router, it will not survive forever, but will be discarded when the specified survival time is reached.

TTS (Time stamped Transport Stream) 192byte packet consist of basic 188byte MPEG TS and 4byte-timestamp counted by 27MHz clock.

UDP (User Datagram Protocol)

Abbreviation of User Datagram Protocol. UDP is a TCP/IP transaction protocol used for specific applications such as remote network management and naming service access.

Unicast

Communication with a station at a single address (that is, most general one-to-one communication.)

USB (Universal Serial Bus)

One of the serial bus standards for connecting peripheral devices to a PC. The first USB1.0 was developed in 1996. Today, USB2.0 provides greater enhancement in transfer speed and load reduction, which made it spread rapidly and became the most commonly used standard for PC environment.

UTP Cable

UTP is an abbreviation of unshielded twisted pair. A UTP cable is an unshielded pair of wires

twisted together, and is used for Ethernet cabling and other purposes.

UTC (Coordinated Universal Time) International standard time. The UTC is calculated based on the time measured by an atomic clock, which uses the second in the SI unit system as a reference value, making adjustments that insert leap seconds to compensate for the time difference from Greenwich Mean Time (GMT.)

Video User Data

Data area standardized by H.264 video encoding method that user can use arbitrarily for data transmission.

VITC (Vertical Interval Time Code)

Time code signal embedded in the vertical blanking area of video sync signal.

10BASE-T

LAN that uses unshielded twisted-pair (UTP) cables and complies with the IEEE 802.3 standard. 10Base-T connection is made simple by using a concentrator called a hub without any special cabling work required. For this reason, 10Base-T is the most widely used form. The maximum cable length is 100 meters.

100BASE-TX

One of the 100Base LAN standards (also called Fast Ethernet.) 100Base-TX supports transfer rates of 100 megabits per second. Other 100Base standards are 100Base-T4 and 100Base-FX. 100Base-TX differs from the other 100Base standards in the type of cable used (UTP cable.) It also uses RJ-45 connectors, which are similar to the modular jacks used for telephones.

1000BASE-T

One of the Gigabit Ethernet standards which have the maximum 1Gps speed. It was standardized as IEEE802.3ab in 1999. This is the standard that uses the UTP cable of the category 5 (CAT5) or the enhanced category 5

IP-900 Series

127