(12) United States Patent ao) Patent No.: us 6,665,020 Bi
Stahl et al. (45) Date of Patent: Dec. 16,2003
(54) DIGITAL TELEVISION APPARATUS FOR
CONTROLLING A PERIPHERAL DEVICE
VIA A DIGITAL BUS
(75) Inventors: Thomas Anthony Stahl, Indianapolis,
IN (US); Steven Charles Rhoads,
Carmel, IN (US); Mike Arthur
Derrenberger, Fishers, IN (US); Izzat
Hekmat Izzat, Carmel, IN (US); Saban
Kurugay, Waukesha, WI (US); Amit
Kumar Chatterjee, North Andover,
MA (US); Sanjeev Nagpal, Longmont,
(73) Assignee: Thomson Licensing S.A., Boulogne
( * ) Notice: Subject to any disclaimer, the term of this patent is extended or adjusted under 35 U.S.C. 154(b) by 0 days.
(21) Appl. No.: 09/508,922
(22) PCT Filed: Sep. 18, 1998 PCT No.: PCT/US98/19631
(56) References Cited
U.S. PATENT DOCUMENTS
5,488,357 A 1/1996 Sato et al.
5,499,018 A 3/1996 Welmer
5,608,730 A 3/1997 Osakabe et al.
5,617,330 A 4/1997 Stirling
5,787,259 A * 7/1998 Haroun et al 348/552
5,794,118 A * 8/1998 Yoshinobu 455/5.1
5,844,623 A * 12/1998 Iwamura 348/553
5,936,667 A * 8/1999 Saib 348/180
6,003,065 A * 12/1999 Yan et al 709/201
6,313,880 Bl * 11/2001 Smyers et al 348/552
6,370,322 B2 * 4/2002 Horiguchi et al 386/95
6,381,697 Bl * 4/2002 Kawamura 213/162
6,421,069 Bl * 7/2002 Ludtke et al 345/762
6,442,630 Bl * 8/2002 Takayama et al 710/105
2001/0012447 Al * 8/2001 Horiguchi 386/125
FOREIGN PATENT DOCUMENTS
EP 0849884 6/1998 H04B/1/20
EP 0873009 10/1998 H04N/5/00
International Search Report dated Dec. 18, 1998.
* cited by examiner
Primary Examiner—-Victor R. Kostak
(74) Attorney, Agent, or Firm—-Joseph S. Tripoli; Paul P.
A minimal level of interoperability for exchanging audio/ video (A/V) content and associated control between common consumer electronic (CE) devices is defined. This interoperability is based on the IEEE 1394 serial bus for the physical and link layers and makes use of AV/C or CAL as the control language. This invention provides for reducing the number of remote controls that the user might need by allowing remote control commands to always be received by a controlling device (e.g., digital television) and then routed to the appropriate peripheral device (e.g. digital VCR) after translation into a universal format.
12 Claims, 5 Drawing Sheets