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DIGITAL RADIO GUIDE TERRESTRIAL TRANSMISSION SYSTEMS - ISDB-TSB
42
• To define a specification for transmission signals on experimental radio waves
• To operate experimental radio waves and to publicize operation schedules
(2) Trial receivers
At present, no receivers are sold in the commercial market.
Thus, different types of trial receivers were developed for the use of experimental
hearing.
Trial receivers include PC-card receivers that have an antenna on the top of a
PCMCIA card, portable receivers (1-segment only) for the DRP, and PDA
(Personal Digital Assistant) receivers where a digital radio adapter is mounted.
(3) Receivers expected
In addition to the above mentioned trial receiver types, the following types of
receivers can be expected:
• cell phone type receivers
• ordinary and smaller palmtop type receivers
• car stereo type receivers for mobiles, and so on
4.3.5 Overview of Services
Among the current services being broadcast, the following types of contents are unique
to digital radio broadcasting.
(1) Multiple voice broadcasting
Listeners can choose a news item, foreign language course, cooking program, etc.,
in addition to multiple-language concurrent broadcasting of weather forecast and
stories.
(2) 5.1 surround broadcasting
5.1 surround broadcast is being provided which includes still images and textual
information linked to its programs, for example, photos during performances in a
live concert.