HYBRID LASER DIODE DRIVERS
Inventors: Theodore D. Rees, Mountain VieW, CA
(US); Akihiro Asada, Chigasaki (JP); D.
Stuart Smith, San Jose, CA (US)
Assignee: Intersil Americas Inc., Milpitas, CA
(US)
Notice: Subject to any disclaimer, the term of this
patent is extended or adjusted under 35 U.S.C. 154(b) by 260 days.
This patent is subject to a terminal disclaimer.
Filed: Nov. 25, 2008
Prior Publication Data
US 2009/0073829 A1 Mar. 19, 2009
Related U.S. Application Data
Continuation-in-part of application No. 11/749,636, filed on May 16, 2007, noW Pat. No. 7,813,247, and a continuation-in-part of application No. 11/749,703, filed on May 16, 2007, noW Pat. No. 7,808,872.
Provisional application No. 61/097,511, filed on Sep. 16, 2008, provisional application No. 61/060,086, filed on Jun. 9, 2008.
Int. Cl.
G11B 7/004 (2006.01)
U.S. Cl. ............. .. 369/59.11; 369/59.15; 369/59.22; 369/59.24; 369/116
Field of Classification Search ...................... .. None
See application file for complete search history.
(56) References Cited U.S. PATENT DOCUMENTS 5,136,152 A 8/1992 Lee 5,216,659 A 6/1993 Call et al. 5,309,424 A 5/1994 Ogawa 5,418,770 A 5/1995 Ide et al. 5,438,582 A 8/1995 Hoshino et al. 5,463,600 A 10/1995 Kirino et al. 5,495,463 A 2/1996 Akagi et al. 5,579,294 A 11/1996 Ohta et al. 5,680,384 A 10/1997 Seki et al. (Continued) FOREIGN PATENT DOCUMENTS EP 1 067529 A2 1/2001 (Continued) OTHER PUBLICATIONS
International Search Report and Written Opinion for PCT/US2009/ 046381 .
Primary Examiner * Wayne Young Assistant Examiner * Brian Butcher (74) Attorney, Agent, or Firm * Fliesler Meyer LLP
A hybrid LDD includes a read channel to selectively output a read current, a plurality of Write channels, each to selectively output a different Write current, and an oscillator channel to selectively output an oscillator current. Additionally, the hybrid LDD includes programmable LDD controller that receives the plurality of enable signals from the external controller, and based on the enable signals, controls timing of the currents output by at least the Write channels. The programmable LDD controller can also control timing of the currents output by the read and oscillator channels, based on the enable signals. Further and alternative embodiments are also provided.
27 Claims, 33 Drawing Sheets
![[graphic]](http://www.google.ca/patents?id=-LfvAQAAEBAJ&ie=ISO-8859-1&output=text&pg=PA2&img=1&zoom=3&hl=en&q=&cds=1&sig=ACfU3U2cVvY6uGmq6E4UJ6lhLjnRH1yNsQ&edge=0&edge=stretch&ci=127,127,733,4)
Page 2 U.S. PATENT DOCUMENTS FOREIGN PATENT DOCUMENTS 5,719,835 A 2/1998 Ishika JP 11-213426 6/1999 5,745,451 A 4/1998 Mukawa et al. KR 2008-0030917 * 4/2008 5,777,964 A 7/1998 Furuta etal. W0 WO 02/29793 A2 4/2002 5,790,491 A 8/ 1998 Jaquette et al. OTHER PUBLICATIONS 5,974,021 A 10/1999 Toda et al. _ 6 154 433 A U/2000 Hoshino et al‘ Sony CX News, vol. 30, “CXA2640ER, 3-Channel LD Driver for 632693059 B1 7/2001 Kumda et a1‘ Optica1Disc Drive, Pre1iminary,”#PE02223-PS, 13 pp.,Late2002 or 6,359,847 B1 3/2002 Shimizu Ear1y2003~ 6,400,735 B1 6/2002 Percey Sony CX News, vol. 32, “CXA2680ER,” #J02Y22, 19 pp., May 6,414,932 B1 7/2002 Kaku etal. 2003 _ 6,442,115 B1 8/2002 Shimoda et a1‘ Sony CX News, vol. 32, “CXA2674ElVUCXA2673EM, Optrcal 6,442,118 B1 8/2002 Hoshino et al‘ Pickup Chipset with Photodetector PDIC for Blue-Violet Laser 6,483,791 B1 11/2002 Asada et al. D1°deS5’2 PPu May 2003 _ 6 487 154 B1 U/2002 Kmebayashi et al‘ Sony CXNews, “CXA2610AN, LaserDr1ver,”#E00145A17, 10 pp., 6 552 987 B1 4/2003 A da 1. NO Dam 6’558’987 B2 5/2003 L2: eta Mitsubishi, “M61880FP,” 14 pp., No Date. 6,636,472 B2 10/2003 Kmebayashi et al Mitsubishi (Digital ASSP), “M66510P/FP Laser-Diode Driver,” 10 ’ ’ ' pp., No Date. gggj%g 5; $5882 ijfiaeitaii Mitsubishi (Digital ASSP), “M66512P/FP, Laser-Diode Driver,” 10 ’ ’ ' pp., No Date. 233%; E; 5588: lsgifijzflél Mitsubishi (Digital ASSP), “M66515FP, Laser-Diode Dr1Ver/COn’ ’ . ' troller,” 7 pp., No Date. 5; 3/588: g:1i1;1:t1aafta1' Mitsubishi (Digital ASSP), “M66516FP, Laser-Diode Dr1Ver/COn’ ’ ' troller,” 10 pp., No Date. 6,738,339 B2 * 5/2004 GYO Office Action issued oct. 27, 2009 in U.S. Appl. No. 11/749,636. gellget alt‘ 1 Notice of Allowance issued May 28, 2010 in U.S. Appl. No. ’ ’ OS _m0 e_ a‘ 11/749,636. 20027/b1l4296’égA9‘ ;Sal11(1;l}:t1S:i1eta1' 369/53 26 No/tice of Allowance issued Aug. 11, 2010 in U.S. Appl. No. _ ' """""""" " ' 11 749,636. 2003/0007438 A1 1/2003 Km 8‘ a1~ Office Action issued oct. 16, 2009 in U.S. Appl. No. 11/749,703. %[(:1§:Iln‘;t:tl'al 369/116 Notice of Allowance issued Aug. 12, 2009 in U.S. Appl. No. ' """"""" " 11/749,703. 1 Notice of Allowance issued Jun. 2, 2010 in U.S. Appl. No. eese a~ 11/749,703. §88g;8g?§ggg ii * 15882 I1\‘I‘?e;_et 31 t 1 Office Action issued Apr. 28, 2011 in U.S. Appl. No. 12/897,571. 1S 1mura e 3. . 2010/0054102 A1 3/2010 Kurihara et al. * cited by examiner
s M A ww W-3 M 6 W W W wmwwwmwu vmowo S M . mwamm, W” M Q¢S.E..S.B 03 6 re emm “mm M mwzmo mamas w m,-EB. mzm * M m “ gm? . W mwemm. W 3 M meme Awe 4% eye W W . W mmamm W ullJ M M memes 6 w ewe? me M , W M ~25. N mwémn M pitta W W New? 0 w ~&iiL Q: N M W V M < %>&m _ 3 2mm 2 M aim i.6é\% xmra,.mt§, mg W W mined wfi at aim , W .,Ezo_,§w>zoo mi ezw Ml M L 69
QQD ZOF2wa..2OO mmi UZMEE‘
. w A M
H W W 6 6 ..wB,Qm
. A A . m H, m M A
w _ “ n w a Q n u
w n ~ M H. M Q U
w ~ A W n -
m w A w . a Q
m “ 4 W. . ~ . a W m , _
A , ANN W. A A . _ H W W A A .
a 4 _ ~ . . a, M A a M .
w . . . . . .. A . n M M W M
.WL.~.~...Q..I..I.L A N. _ . U. M . M W . A
w . . . . . . . . . . . . . . . . . . . . .. T A . A W W .. »
L E ~ ~ A F L M W m " Wgg
A. .. a 2 A W W . . A
. W 6 -
w m “ m U » m * D W m . E
E 6 _ u
5. w J . . m
G N » mwwwmnfi
M »
|
