4.7-GB DVD-Ram

Miyamoto, Masahiko; Ando, K.; Anzai, Yumiko; Hirotsune, Akemi; Ushiyama, Junko; Toda, Tatsuki; Kando, Hidehiko; Terao, Motoyasu; Nishida, T.; Maeda, Tatsuya

doi:10.1364/ods.1998.wb.1

Cited by 2 publications

(3 citation statements)

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“…The residual capacity enhancement factors are an efficient error correction code (ECC) and an enhanced recording area. 3) A high-SNR writeonce disk, which is a phase-change disk with an anti crystallization layer, 2) was used for high-density recording. To achieve a high data transfer rate of 100 Mbps, three-beam CTC with ORE was developed.…”

Section: Concept Of 50 Gb and 100 Mbpsmentioning

confidence: 99%

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Read/Write Technology for 50 GB/layer at 100 Mbps

Hirotsune¹,

Ushiyama²,

Minemura³

et al. 2005

Jpn. J. Appl. Phys.

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We developed read/write technology for high-density optical data storage of 50 GB/layer at a data transfer rate of 108 Mbps. We demonstrated the writing and reading capabilities of a 50 GB/layer optical disk recording system at 36 Mbps with a sufficient power margin, using a three-beam crosstalk canceller with optical response equalizers, using a phase-change write-once disk. Bit error rates were below 1×10-4 at 108 Mbps. Experimental results showed that the technology realizes writing and reading densities two times higher and data transfer rates three times higher than those of Blu-ray with a simple optical component such as Blu-ray.

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Section: Concept Of 50 Gb and 100 Mbpsmentioning

confidence: 99%

“…For high-density recording, narrow track and short bit pitches are required. To increase bit density, adaptive partial response maximum likelihood (PRML) signal processing with pattern compensation, 1) high signal to noise ratio (SNR) write-once disk 2) and highly efficient format 3) were investigated.…”

Section: Introductionmentioning

confidence: 99%

Read/Write Technology for 50 GB/layer at 100 Mbps

Hirotsune¹,

Ushiyama²,

Minemura³

et al. 2005

Jpn. J. Appl. Phys.

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“…The Blu-ray Disc (BD), which was introduced to the market in March 2003, has a storage capacity of 23.3 GB/layer and is capable of recording 2-h HD-TV stream. We have been developing write/read technologies for post-BDs with a capacity of 50 GB/layer [1][2][3] that will enable a longer recording. In this report, the authors propose a crosstalk cancellation method for 50-GB-per-layer highdensity recording.…”

Section: Introductionmentioning

confidence: 99%

Crosstalk Cancellation for 50-GB/Layer Optical Recording

Kudo

Minemura

Miyamoto

et al. 2005

Jpn. J. Appl. Phys.

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The Mario Schenberg gravitational wave detector has been constructed at its site in the Physics Institute of the University of São Paulo as programmed by the Brazilian Graviton Project, under the full support of FAPESP (the São Paulo State Foundation for Research Support). We are preparing it for a first commissioning run of the spherical antenna at 4.2 K with three parametric transducers and an initial target sensitivity of h ∼ 2 × 10 −21 Hz −1/2 in a 60 Hz bandwidth around 3.2 kHz. Here we present the status of this project.PACS numbers: 04.80.Nn, 95.55.Ym

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4.7-GB DVD-Ram

Cited by 2 publications

References 0 publications

Read/Write Technology for 50 GB/layer at 100 Mbps

Read/Write Technology for 50 GB/layer at 100 Mbps

Crosstalk Cancellation for 50-GB/Layer Optical Recording

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