due to the early chipsets either being too large for a small enclosure and / or needing too much power to be practical for a battery-operated device. However, in January 2008 at the Consumer Electronics Show (CES) in Las Vegas, iBiquity unveiled a prototype of a new portable receiver, roughly the size of a cigarette pack. Two companies made low-power chipsets for HD receivers: Samsung SiPort At least five companies made portable HD receivers: Coby Electronics Corporation produced the first HD portable – the Coby HDR‑700 portable HD receiver for both AM and FM. Griffin Technology produced an HD receiver designed to plug into the dock connector of an Apple iPod, or iPhone, with tuning functionality provided via software through the device's multi-touch display. This product was discontinued. Best Buy started selling the Insignia NS‑HD01, a house brand portable unit on 12 July 2009. It was the second portable HD receiver to come to the general market and featured FM‑only playback and a non-removable rechargeable battery which charges via mini USB. The Insignia unit sold in 2009 for around US$50 – the least expensive receiver available. Best Buy discontinued the NS‑HD01 model by September 2019. Microsoft released the on 15 September 2009. It included an HD receiver embedded in the media device. The Zune HD was discontinued in November 2011 in favor of Windows Phones. Sangean Electronics produces multiple portable HD radios with AM and FM reception, like the Sangean HDR-14 portable receiver. By 2012, iBiquity was trying to get HDR chipsets into mobile phones. Footnotes References External links — IBOC general information page — Site with standards documents for the NRSC formats of HD Radio — information on an early IBOC installation — editorial discusses marketing challenges for HD Radio — audio samples of actual HD broadcasts Xperi Digital radio Broadcast engineering Articles containing video clips American inventions 2002 introductions 2002 establishments in the United States