History and designiPod came from Apple's digital hub strategy,[1] when the company began creating software for the growing market of digital devices being purchased by consumers. Digital cameras, camcorders and organizers had well-established mainstream markets, but the company found existing digital music players "big and clunky or small and useless" with user interfaces that were "unbelievably awful,"[1] so Apple decided to develop its own. Apple's hardware engineering chief, Jon Rubinstein, ordered by Steve Jobs, assembled a team of engineers to design it, including Tony Fadell, hardware engineer Michael Dhuey, and design engineer Jonathan Ive, with Stan Ng as the marketing manager. The product was developed in less than a year and unveiled on October 23, 2001. CEO Steve Jobs announced it as a Mac-compatible product with a 5 GB hard drive that put "1000 songs in your pocket."
Uncharacteristically, Apple did not develop iPod's software entirely in-house. Apple instead used PortalPlayer's reference platform which was based on 2 ARM cores. The platform had rudimentary software running on a commercial microkernel embedded operating system. PortalPlayer had previously been working on an IBM-branded MP3 player with Bluetooth headphones.[2] Apple contracted another company, Pixo, to help design and implement the user interface, under the direct supervision of Steve Jobs.[1] Once established, Apple continued to refine the software's look and feel. Starting with iPod mini, the Chicago font was replaced with Espy Sans. Later iPods switched fonts again to Podium Sans — a font similar to Apple's corporate font Myriad. iPods with color displays then adopted some Mac OS X themes like Aqua progress bars, and brushed metal in the lock interface. In 2007, Apple modified the iPod interface again with the introduction of the sixth-generation iPod classic and third-generation iPod nano by changing the font to Helvetica, and in most cases, splitting the screen in half by displaying the menus on the left and album artwork, photos, or videos on the right (whichever was appropriate for the selected item).
TrademarkThe name iPod was proposed by Vinnie Chieco, a freelance copywriter, who (with others) was called by Apple to figure out how to introduce the new player to the public. After Chieco saw a prototype, he thought of the movie 2001: A Space Odyssey and the phrase "Open the pod bay door, Hal!", which refers to the white EVA Pods of the Discovery One spaceship.[1] Apple researched the trademark and found that it was already in use. Joseph N. Grasso of New Jersey had originally listed an "ipod" trademark with the U.S. Patent and Trademark Office in July 2000 for Internet kiosks. The first ipod kiosks had been demonstrated to the public in New Jersey in March 1998, and commercial use began in January 2000. The trademark was registered by the USPTO in November 2003, and Grasso assigned it to Apple Computer, Inc. in 2005.[3]

iPod is a brand of portable media players designed and marketed by Apple and launched in October 2001. The line-up currently consists of the original style hard drive-based flagship iPod classic, the iPod touch, the mid-level video-capable iPod nano, and the low-end screenless iPod shuffle. Former products include the compact iPod mini (replaced by the iPod nano) and the high-end spin-off iPod photo (re-integrated into the main iPod classic line). iPod classic models store media on an internal hard drive, while all other models, aside from the Microdrive-based mini, use flash memory to enable their smaller size. As with many other digital music players, iPods can also serve as external data storage devices.
Apple's iTunes software is used to transfer music to the devices. As a jukebox application, iTunes stores a music library on the user's computer and can play, burn, and rip music from a CD. It also transfers photos, videos, games, and calendars to those iPod models that support them. Apple focused its development on the iPod's unique user interface and its ease of use, rather than on technical capability. As of September 2007, the iPod had sold over 110 million units worldwide (stated in "The Beat Goes On" conference) making it the best-selling digital audio player series in history.