CD-R CD-R CD-R (Compact Disc-Recordable) is a digital optical disc storage format. A CD-R disc is a compact disc that can be written once and read arbitrarily many times. CD-R discs (CD-Rs) are readable by most plain CD readers, i.e., CD readers manufactured prior to the introduction of CD-R. This is an advantage over CD-RW, which can be re-written but cannot be played on many plain CD readers. Originally named CD Write-Once (WO), the CD-R specification was first published in 1988 by Philips and Sony in the 'Orange Book'. The Orange Book consists of several parts, furnishing details of the CD-WO,
Philips known in medical systems for diagnosis and therapy, lighting technologies, shavers, and consumer electronics. The Canadian headquarters are located in Markham, Ontario. For several years, Philips manufactured lighting products in two Canadian factories. The London, Ontario, plant opened in 1971. It produced A19 lamps (including the "Royale" long life bulbs), PAR38 lamps and T19 lamps (originally a Westinghouse lamp shape). Philips closed the factory in May 2003. The Trois-Rivières, Quebec plant was a Westinghouse facility which Philips continued to run it after buying Westinghouse's lamp division in 1983. Philips closed this factory a few years later, in the late 1980s.