CD-i, or Compact Disc Interactive, is the name of an interactive multimedia CD player developed and marketed by Philips Electronics N.V. CD-i also refers to the multimedia Compact Disc standard used by the CD-i console, also known as Green Book, which was co-developed by Philips and Sony in 1986 (not to be confused with MMCD, the pre-DVD format also co-developed by Philips and Sony). The first Philips CD-i player, released in 1991 and initially priced around USD$700, is capable of playing interactive CD-i discs, Audio CDs, CD+G (CD+Graphics), Karaoke CDs, and Video CDs (VCDs), though the latter requires an optional "Digital Video Card" to provide MPEG-1 decoding.
In addition to consumer models, professional and development players were sold by Philips Interactive Media Systems and their VARs. Philips marketed several CD-i player models.
- The CD-i player 200 series, which includes the 205, 210, and 220 models. Models in the 200 series are designed for general consumption, and were available at major home electronics outlets around the world. The Philips CD-i 910 is the American version of the CD-i 205, the most basic model in the series.
- The CD-i player 300 series, which includes the 310, 350, 360, and 370 models. The 300 series consists of portable players designed for the professional market and not available to home consumers. A popular use was multimedia sales presentations such as those used by pharmaceutical companies to provide product information to physicians, as the devices could be easily transported by sales representatives.
- The CD-i player 400 series, which includes the 450, 470, 490 models. The 400 models are slimmed-down units aimed at console and educational markets. The CD-i 450 player, for instance, is a budget model designed to compete with game consoles. In this version an infrared remote controller is not standard but optional.
- The CD-i player 600 series, which includes the 601, 602, 604, 605, 615, 660, and 670 models. The 600 series is designed for professional applications and software development. Units in this line generally include support for floppy disk drives, keyboards and other computer peripherals. Some models can also be connected to an emulator and have software testing and debugging features.
There also exist a number of hard-to-categorize models, such as the FW380i, an integrated mini-stereo and CD-i player; the 21TCDi30, a television with a built-in CD-i device; and the CD-i 180/181/182 modular system, the first CD-i system produced.
Besides Philips, several other manufacturers produced CD-i players, including Magnavox, GoldStar / LG Electronics, Digital Video Systems, Memorex, Grundig, Sony ('Intelligent Discman', a portable CD-i player), Kyocera, NBS, Highscreen, and Bang & Olufsen, who produced a television with a built-in CD-i device.
- 16-bit 68070 CISC Chip (68000 core)
- Clock Speed of 15.5 MHz
- CD-RTOS (based on Microware's OS-9)
- Resolution: 384�280 to 768�560
- Colors: 16.7 million w/ 32,768 on screen
- MPEG 1 Cartridge Plug-In for VideoCD and Digital Video
- Standard PAL and NTSC TV format
- ADPCM eight channel sound
- 16-bit stereo sound