The Criterion Collection, Inc. (or simply Criterion) is an American home-video distribution company that focuses on licensing, restoring and distributing "important classic and contemporary films". Criterion serves film and media scholars, cinephiles and public and academic libraries. Criterion has helped to standardize certain aspects of home-video releases such as film restoration, the letterboxing format for widescreen films and the inclusion of bonus features such as scholarly essays and commentary tracks. Criterion has produced and distributed more than 1,000 special editions of its films in VHS, Betamax, LaserDisc, DVD, Blu-ray and Ultra HD Blu-ray formats and box sets. These films and their special features are also available via The Criterion Channel, an online streaming service that the company operates. The Criterion Collection is considered a leading boutique Blu-ray label. The company was founded in 1984 by Robert Stein, Aleen Stein and Joe Medjuck, who later were joined by Roger Smith. In 1985, the Steins, William Becker and Jonathan B. Turell founded the Voyager Company to publish educational multimedia CD-ROMs (1989–2000), and the Criterion Collection became a subordinate division of the Voyager Company, with Janus Films holding a minority stake in the company, and decided to expand its product on videocassettes and videodiscs. In March 1994, Verlagsgruppe Georg von Holtzbrinck GmbH bought 20% of Voyager for US$6.7 million; the four founders each retained a 20% owner's share. In 1997, the Voyager Company was dissolved (Aleen Stein founded the Organa LLC CD-ROM publishing company), and Holtzbrinck Publishers sold the Voyager brand name, 42 CD-ROM titles, the Voyager web site and associated assets to Learn Technologies Interactive, LLC (LTI). Stein sold 42 Voyager titles to LTI from his Voyager/Criterion company share. The remaining three partners, Aleen Stein, Becker and Turell owned the Criterion Collection company, which has a business partnership with Janus Films and had one with Home Vision Entertainment (HVE) until 2005, when bought HVE.