Robinson was the CEO of Scientific Atlanta for 20 years, and chairman of the board for an additional eight years, until he retired from the company in 1979. Scientific Atlanta grew dramatically; it earned $3.1 million in revenue in 1962 and approximately $200 million when Robinson left. Sidney Topol served as its president from 1971–83, CEO from 1975–87, and chairman of the board from 1978-90. During his tenure, the company grew in sales to more than $600 million. During the 1970s the company developed the concept of cable/satellite connection, which, in working with HBO and transportable earth stations developed by TelePrompTer Corporation and manufactured by Scientific Atlanta, established satellite-delivered television for the cable industry. In 2000, the company sold its satellite ground station and satellite networking businesses to Viasat. In August 2002, the company laid off 6 percent of the company's total. In February 2003, Scientific-Atlanta introduced their first Explorer HD set-top box, which is capable of displaying HDTV programming, at Best Buy stores in the Phoenix metropolitan area. It was later rolled out nationwide. In March 2004, Scientific-Atlanta launched the Explorer 8000HD, their first set-top box with both DVR and HD. In the set-top arena, Scientific-Atlanta once enjoyed 100% market share with Time Warner Cable, Cablevision and AT&T U-verse; all three companies have since started to transition to other boxes, Cablevision using Samsung, while TWC and U-verse are split between SA/Cisco and competitor Arris (formerly Motorola). Comcast also has a split account with the two companies. Other companies that have split accounts with SA and Arris are Suddenlink Communications, Charter Communications and Cox; the two vendors also had split accounts for Adelphia before that company went under in 2006. Pace plc, who mainly competes in foreign markets, serves as a domestic rival, but on a limited scale. On November 18, 2005, Scientific Atlanta announced that it would be purchased by Cisco Systems in a US$6.9 billion cash deal. On February 25, 2006, Cisco Systems announced that it had completed acquisition of Scientific Atlanta in a cash deal that paid $43 per share. The total cash value of the deal was roughly US$7 billion, or US$5.1 billion net of Scientific Atlanta's cash balance, and also about US$5.1 billion over their 2005 shareholders' equity. In its fiscal year 2005, Scientific Atlanta earned $1.36 per common share (diluted). On November 21, 2015, Cisco completed sale of its Connected Devices Business Unit (CDBU)