(19)
(11)EP 2 383 738 A3

(12)EUROPEAN PATENT APPLICATION

(88)Date of publication A3:
13.05.2015 Bulletin 2015/20

(43)Date of publication A2:
02.11.2011 Bulletin 2011/44

(21)Application number: 11163434.1

(22)Date of filing:  21.04.2011
(51)International Patent Classification (IPC): 
G11B 20/10(2006.01)
G11B 7/14(2012.01)
G11B 20/18(2006.01)
(84)Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME

(30)Priority: 28.04.2010 US 769394

(71)Applicant: General Electric Company
Schenectady, NY 12345 (US)

(72)Inventors:
  • Ross, John Anderson Fergus
    Niskayuna, NY 12309 (US)
  • Hershey, John Erik
    Niskayuna, NY 12309 (US)
  • Shi, Xiaolei
    Niskayuna, NY 12309 (US)
  • Wang, Xuefeng
    Niskayuna, NY 12309 (US)

(74)Representative: Bedford, Grant Richard 
GPO Europe GE International Inc. The Ark 201 Talgarth Road Hammersmith
London W6 8BJ
London W6 8BJ (GB)

  


(54)Coding for optical storage systems with multiple reader heads and multiple optical disks


(57) Provided are methods and systems (10, 110, 130, 152, 160, 170, 190) of encoding and decoding techniques in an optical storage system having a multi-head detector (108). In one embodiment, source data (112) may be encoded using error correction coding (e.g., turbo coding) techniques, and the encoded data (120, 126) may be interleaved and distributed to more than one detector head (106) of the multi-head detector (108). Data recorded (120, 126) in an optical disc (12) may be retrieved by the multi-head detector (108), and a read data (132, 140) from more than one detector head (108) may be concurrently decoded to retrieve estimates (138, 144) of the original information in the source data (112). Further, more than one encoder/decoder (116, 122, 136, 144) may be used, and each encoder/decoder (116, 122, 136, 144) may encode or decode data from multiple data heads (106, 108). Some embodiments also include replicating multiple discs (12).







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