Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval
Patent
1994-06-02
1997-07-08
Hindi, Nabil
Dynamic information storage or retrieval
Condition indicating, monitoring, or testing
Including radiation storage or retrieval
369116, 369 54, 3692751, G11B 700
Patent
active
056469241
ABSTRACT:
An intensity of light reflected on a phase-changing type of information recording medium is changed since unrecorded and recorded portions of the recording medium have different phase states so that reflectivities of the unrecorded and recorded portions are different from each other. Such an intensity change takes place in a very short time immediately after a recording pulse is irradiated onto the phase-changing type of information recording medium. In a recording and simultaneous verifying method of the phase-changing type of information recording medium, the change in intensity of light reflected on the phase-changing type of information recording medium is detected by using this light reflected simultaneously with a recording pulse irradiated onto the phase-changing type of information recording medium. It is confirmed if the information is correctly recorded by detecting the reflected light. Thus, this information can be recorded to the information recording medium and can be simultaneously verified.
REFERENCES:
patent: 4599717 (1986-07-01), Bracht et al.
patent: 4694447 (1987-09-01), Cohen et al.
patent: 4816385 (1989-03-01), Gravesteijn et al.
patent: 4831611 (1989-05-01), Sasaki et al.
patent: 4847132 (1989-07-01), Takao et al.
patent: 4889746 (1989-12-01), Utsumi et al.
patent: 4904577 (1990-02-01), Tyan et al.
patent: 4947372 (1990-08-01), Koshino et al.
patent: 4954379 (1990-09-01), Nishida et al.
patent: 5011723 (1991-04-01), Harigaya et al.
patent: 5015548 (1991-05-01), Pan et al.
patent: 5063097 (1991-11-01), Hirota et al.
patent: 5080947 (1992-01-01), Yamada et al.
patent: 5095479 (1992-03-01), Harigaya et al.
patent: 5124232 (1992-06-01), Nakanishi et al.
patent: 5156693 (1992-10-01), Ide et al.
patent: 5208792 (1993-05-01), Imanaka
patent: 5298305 (1994-03-01), Shinozuka et al.
patent: 5341359 (1994-08-01), Birukawa et al.
patent: 5404348 (1995-04-01), Terao et al.
patent: 5428586 (1995-06-01), Kobayashi et al.
Patent Abstracts of Japan, Publication No. JP3197173, Publication date Aug. 28, 1991.
Patent Abstracts of Japan, Publication No. JP4094965, Publication date Mar. 27, 1992.
Derwent Patent Abstract, Publication No. JP3240590, Publication dated Oct. 25, 1991.
Derwent Patent Abstract, Publication No. JP4078031, Publication dated Mar. 12, 1992.
Derwent Patent Abstract, Publication No. JP4232779, Publication dated Aug. 21, 1992.
Patent Abstract of Japan, Publication No. JP1251332, Publication dated Jun. 10, 1989.
Patent Abstracts of Japan, Publication No. JP1112538, Publication dated Jan. 5, 1989.
Deguchi Hiroshi
Harigaya Makoto
Ide Yukio
Iwasaki Hiroko
Kageyama Yoshiyuki
Hindi Nabil
Ricoh & Company, Ltd.
LandOfFree
Recording and simultaneous verifying method of phase-changing ty does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Recording and simultaneous verifying method of phase-changing ty, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Recording and simultaneous verifying method of phase-changing ty will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2412926