1)

ARIB (Association of Radio Industries and Businesses):
ARIB is an organization named by the Minister of Public Management, Home Affairs and Telecommunications as a "Center for Promotion of Efficient Use of the Radio Spectrum" specified by the Radio Law. It conducts investigation, research & development and technical studies cooperating with the standardization bodies for the efficient use of radio spectrums in communication and broadcasting areas.
 

2)

ARIB-J (ARIB STD-B23):
ARIB-J is the Japanese digital TV broadcasting standard based on MHP and aiming for the global standard. To be accurate, ARIB-J is based on GEM (Global Executable MHP) standard specified by MUG (MHP Umbrella Group), a group of standard organizations; DVB in Europe, ATSC/CableLabs in the States and ARIB in Japan. Examples of standards similarly based on GEM are OCAP American cable TV standard and BD-J Blu-ray Disc standard.
 

3)

ATSC (Advanced Television Systems Committee):
ATSC is the name of the American standardization committee that specified the method for digital TV broadcasting. It also refers to the method specified by that committee. ATSC utilizes MEPG-2 for the video compression method and AC-3 for the sound compression method.

ATSC, the terrestrial digital broadcasting in the States that began in 1998, though started rather slowly at first, expanded the covering area and now entered into the diffusion phase. It covered approximately 80% of the North America as of 2004. Further, the FCC (Federal Communications Commission) recommendation to mandatory include digital tuner, transition goes smoothly for analog service cease scheduled in December 31, 2008.

On the other hand, digitalization for cable TV is under way in the States with high cable penetration rate. CableLabs, the cable TV industry group established the organization called OpenCable to promote the digital cable TV in the states.

Formerly, cable operators offered set top boxes for each cable TV. However, operators had to bear heavy burden and subscribers couldn't select set top boxes freely in this method. So OpenCable organization formed a new standard. In this standard, any commercial set top box bought at an electronics shop can work as the set top box for each cable operator by inserting the CableCARD PC card provided by the cable operator. This enables subscribers to buy set top boxes of their own choice. TV manufacturers incorporate CableCARD memory into conventional ASTC terrestrial digital TV to produce OpenCable enabled TV and/or set top box.
 

4)

CableCARD:
CableCARD is a PC Car Type II card and is used for the CA(Conditional Access) certification to support multiple different cable operators. CableCARD supporting receivers should pass a very rigorous verification test by CableLabs. Receivers developed by Zentek passed this test.
 

5)

CableLabs:
Officially called Cable Television Laboratories, Inc. It is a non-profit research and development organization established by cable TV businesses in the States for the cable TV business promotion, standard unification and offering technical support
 

6)

DMB-S:
DMB-S stands for "Satellite Digital Multimedia Broadcasting" meaning pay satellite broadcasting.
A dedicated receiver terminals for satellite broadcasting is necessary to watch the satellite DMB broadcasting.
 

7)

EIA-708B:
EIA-708B is the standard specification for Digital Television Closed Captioning (DTVCC) in the States. Compared to former CC (Closed Caption), EIA-708B is easier to read by using outline fonts and supports fonts and display color setting. FCC recommendation specified EIA-708B to be mandatory installed into the digital TV sets sold in the States after July 2002. Zentek's EIA-708B solution is already installed in the STBs for the States and shipped as products.
 

8)

MHP (Multimedia Home Platform):
MHP is the standard for the next generation interactive digital TV broadcasting specified by DVB (Digital Video Broadcasting), a digital TV standardization organization in Europe. MHP realizes the digital TV applications by a Java based common API.
 

9)

OCAP (OpenCable Application Platform):
OCAP is the standard specification specified by CableLabs to realize interactive applications. It is based on GEM standard (DVB-MHP). OCAP is a standard specified by CableLabs, but the terrestrial digital broadcasting in the States (ATSC) took in the OCDAP specification also and formed ACAP(Advanced Common application Platform) .
 

10)

OpenCable:
OpenCable is a project by CableLabs to standardize CATV network interface so that users can buy STBs or receivers from usual electronics shops. Currently, this project name also applies for the specification name. Formerly, a dedicated STB was necessary for each cable operator. But now a single receiver can support multiple operators by inserting a PC card called CableCard.
 

11)

T-DMB
T-DMB stands for "Terrestrial-Digital Media Broadcasting".
Technically, it uses a transfer method based on the "Eureka147" European standard for DAB (Digital Audio Broadcasting). It features narrower per channel bandwidth by using OFDM for communication system and sending the digital data by multi-carrier. Smaller bandwidth used per channel enables lower power consumption for the receiver and is suitable for mobile communication.

T-DMB is the standard selected in Korea and some countries in Europe. It is promoted by an international non-profit organization called "The World DAB Forum". Currently, actual broadcasting starts in Korea from December 2005 and trial broadcasting for terrestrial DMB starts in France from December 2005. In the UK, T-DMB in the Korean style will start trial broadcasting from April 2006.