The History of Radio(라디오의 역사)
The Early Years (초기)
1877년에, Thomas Edison는 기계 원통에 처음으로 "메리가 어린양을 가졌다"라고 기록하였습니다. 10년후 Heinrich Hertz는 전류가 파동을 가진다는 것을 증명하였습니다.
1895년에, Guglielmo 마르코니는 처음으로 라디오 시그널을 1마일 밖에있는 가족에게 보
Digital Multimedia Broadcasting)?
DMB is a new kind of Convergence Service that is a combination of the characteristics broadcasting to public or private which can be used as a means of strengthen functions of multimedia and entertainment of Cell phone.
There are two types of DMB, Which is the ground wave DMB and satellite DMB. Ground wave DMB is a Digital broadcasting service that is transm
TU media Corp.
Brief History
Jan. 2001. Start to develop satellite
Dec.2003. FoundTU Media Corp
Feb.2004. Establish broadcasting center
Mar.2004. Succeed to launch DMB satellite “Han-Byul”
Dec.2004. Acquire enterprise right for S-DMB
May.2005. Start S-DMB service
Jun.2009. Reach to subscribers of 2 million
Service Channels
19 Video Channels
16 Audio Channels
digital settop boxes.
Digital convergence also refers to the digitalization of traditional media. For example, during the advent of personal computers, text-only documents were the first to be digitized. Increasingly, graphics would be digitized, at first simple illustrations, then eventually photographs. Digital sound evolved from series of single-tone "beeps" to very detailed audio encodings
Audio and output
One of two speakers (left) and the microphone (right) surround the dock connector on the base of the iPhone. If a headset is plugged in, sound is played through it instead.
The 3.5 mm TRRS connector for the headphones is located on the top left corner of the device.[50] The headphone socket on the original iPhone is recessed into the casing, making it incompatible with mos