Information Technology Reference
In-Depth Information
Table 2
(Cont.)
20
TpSiR
Top side right
21
TpBC
Top back centre
22
BtFC
Bottom front centre
23
BtFL
Bottom front left
24
BtFR
Bottom front right
2.3 Roadmap of SHV
The provisional roadmap for SHV for the future is shown in Figure 3. NHK Science
and Technology Research Laboratories (STRL) started the SHV study in 1995, and in
the following decade made steady progress towards its practical use. We expect to
launch SHV broadcasting by 2025. The plan is to deliver SHV through a cost-effective
network to homes, where it will then be recorded onto a home-use receiver. We antici-
pate that experimental SHV broadcasts will start in 2020 using a 21-GHz-band satel-
lite, which is a potential delivery media for high-bit-rate transmissions. The display for
SHV is another important subject. The widespread use of large, high-resolution flat
panel displays is remarkable. We assume that SHV displays for home use will be ei-
ther a 100-150-inch large screen display or an A3-sized handheld-type paper-thin dis-
play with extremely high resolution. The SHV system has the potential for use in vari-
ous applications in addition to broadcasting, e.g., art, medical use, security, and
monitoring. In-theater presentation of sports events, concerts, etc. will be implemented
before the broadcasting stage. The SHV systems can also be used in non-theater envi-
ronments such as for advertisements, image archive materials and background images
for program production.
Fig. 3
Roadmap toward achieving SHV broadcasting
3 Codec Systems
The data rate of uncompressed SHV signal reaches about 24 Gbps (bits per second).
For achievement of SHV broadcasting services to homes, compression coding is
needed to transmit such a huge amount of information. Video codec systems have
been developed for the efficient transmission and recording of SHV signals. The de-
veloped codec systems consist of a video format converter, video codec, and audio co-
dec. In this section, the video format converter and the video codec are discussed.
