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The Sony CDP-101 was the world's first commercially released compact disc player.〔(Home Audio Product & Technology Milestones )〕 The system was launched in Japan on October 1, 1982 at a list price of 168,000 yen (approx $730).〔(Sony History: A Great Invention 100 Years On )〕 The Japan-only launch was partially because Philips, Sony's partner in the development of the CD format, was unable to meet the original agreed launch date. Rather than agree a full postponement, Sony agreed to delay the launch of the format outside Japan by six months.〔(Shannon, Beethoven, and the Compact Disc by Kees A. Schouhamer Immink )〕 The Philips CD100 launched in November 1982, 〔(Kretschmer, Tobias and Muehlfeld , Katrin, Co-opetition in Standard-Setting: The Case of the Compact Disc (October 2004). NET Institute Working Paper No. 04-14. )〕 although early Philips players contained some Sony components.〔(Shannon, Beethoven, and the Compact Disc by Kees A. Schouhamer Immink )〕 In line with the agreement, the system was launched worldwide in March 1983.〔(Sony CDP-101 Compact Disc Player )〕 ==Design== Demonstration CD players from Sony had the disc placed vertically in the machine allowing the CD face to be visible through a transparent front whilst playing. The CDP-101 instead opted for a horizontal tray-loading system. The case and front panel of the system were manufactured from plastic. The front of the unit featured a vacuum fluorescent display panel to provide information such as track number and playing time, an infrared receiver to allow the use of a remote control and buttons to control playback, open and close the tray and toggle the display between showing elapsed and remaining playing time. The only dial on the machine allowed for the headphone volume level to be adjusted; a 1/4" headphone jack was also located on the front of the unit. At the back of the unit there are two on/off switches, one labeled Auto Pause and the other Anti Shock. There are two RCA jacks to carry left and right channels of audio; a 26-pin accessory connector is included, presumably for future developments that did not materialize. A heatsink is located at the back of the unit.〔(Sony CDP-101 )〕 The included remote control unit, RM-101, features the majority of the same button controls as on the main system. It omits the open/close button and display toggle, but has numbered buttons not present on the main unit that allow a particular track number to be selected. The model name CDP-101 was chosen by Nobuyuki Idei, who headed Sony's Audio Division. "101" represents the number 5 in binary notation and was chosen because Idei considered the model to be of "medium class".〔(Sony History: A Great Invention 100 Years On )〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Sony CDP-101」の詳細全文を読む スポンサード リンク
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