Ricoh Company, Ltd.

Mikiko Abe

Hiroshi Deguchi

Eiko Hibino

Hiroshi Miura

Hajime Yuzurihara

Kazunori Ito

Yoshinaga Kato

Masaki Kato

Katsuyuki Yamada

Hiroyoshi Sekiguchi

Michiharu Abe

Hiroko Ohkura

Taro Okuyama

Shinya Narumi

Tsuyoshi Shigemasa

Masahiro Ujiie

Makoto Harigaya

Satoshi Taniguchi

Takeshi Kibe

Masaomi Sasaki

Shigeyuki Harada

Masaru Shinkai

Yoshiyuki Kageyama

Takahiro Hiramatsu

Masanori Ishigami

Miku Mizutani

Hiroko Okura

A computer program product includes a non-transitory computer-usable medium having computer-readable program codes embodied in the medium. The program codes when executed cause a computer to execute: detecting a connection status of an externally connected second display different from a built-in first display; writing status information indicating the detected connection status in a storage, changing over a display destination between the first display and the second display based on the detected connection status, and controlling a display screen according to screen specifications of the first display or the second display, which corresponds to the display destination after changeover; and reading the connection status written in the storage and scaling a display image at a magnification based on the read connection status.

Computer program product, information processing method, and information processing apparatus

A terminal is connected to a terminal management device and an update management device. The terminal includes: a determination request unit configured to request the terminal management device to determine whether or not an update of a program is executable; an acquisition unit configured to, when the determination request unit receives information indicating that the terminal is able to execute an update of a program, acquire an update program used for executing an update of the program from the update management device; and an updating unit configured to execute the update program received from the update management device.

Terminal, terminal system, and non-transitory computer-readable medium for updating a terminal using multiple management devices

An image processing device includes an image control unit that controls an operation of imaging a picture image; a detection control unit that controls an operation of detecting whether a direction of imaging the picture image is changed or not; and a display control unit that controls an operation of displaying a display image which is generated based on the imaged picture image, and displays an image for setting when the detection control unit detects that the direction of imaging is changed.

Image processing device, display terminal, image display system, image processing method, control method of display terminal, control method of image display system, and program thereof

A light emitting device is configured to include a substrate and a luminous layer provided overlying the substrate, which includes a semiconductor nanocrystal to which a carbazole derivative is coordination-bonded or attached, the carbazole derivative having aromatic rings of a compound represented by the chemical structure 1, which is substituted by one to three substitution groups: The one to three substitution groups are represented by the chemical structure 2:-X-Y-Z&#x2003;&#x2003;Chemical Structure 2.X represents a methylene group, a carbonyloxy group, an oxycarbonyl group, a carbonyl group, an oxygen atom, and a sulfur atom, Y represents a substituted or non-substituted alkylene group, and Z represents a carboxyl group, a hydroxyl group, and a thiol group.

Light emitting device and display unit

To provide a method of recording information to an optical recording medium comprising recording a mark of time length nT (n: natural number of 3 or more, T: clock cycle) in an optical recording medium capable of supporting different recording speeds and having constant information line density, and irradiating the optical recording medium, the optical recording medium irradiated with light of alternating mheating pulses of power Pw and mcooling pulses of power Pc (where mis a natural number smaller than n) provided v&#x3c;v(where v is a scanning speed and vis a scanning speed unique to each optical recording medium), the optical recording medium irradiated with light of alternating mheating pulses of power Pw and mcooling pulses of power Pc (where mis a natural number smaller than n) provided v&#x2267;v, wherein the condition n/m&#x2267;n/mis satisfied.

Optical recording medium and method of recording to the same

The phase-change optical recording medium having a substrate, and at least a first protective layer, a recording layer composed of a phase-change material, a second protective layer and a reflective layer disposed on the substrate in this sequence has a maximum recording linear velocity Vof 20 m/s to 60 m/s, a range of linear velocity recordable even when the recording linear velocity is continuously changed of 0.3Vto 1.0V, and no occurrence of crystals causing a reproduction error in recorded marks.

Phase-change optical recording medium and recording and reproducing method thereof

An optical disc having a transition linear velocity of 8-11 m/s when irradiating continuous light with 11&#xb1;1 mW and a wavelength of 660&#xb1;10 nm using a pickup head with a numerical aperture (NA) of 0.65, and satisfying the following condition:&#x394;|&#x2266;3%where Rb is a reflectance of an unrecorded area, and Ra is a reflectance of the top of an eye pattern after ten cycles of recording. In one recording mode therefor, the disc is rotated at a constant angular velocity so as to have a linear velocity of 3-4 m/s on an innermost track and a linear velocity of 8-9 m/s on an outermost track. In another mode, the disc is rotated at a constant angular velocity so as to have a linear velocity of 5-6 m/s on an innermost track and a linear velocity of 13-14 m/s on an outermost track.

Optical recording medium

The object is to provide an optical recording method improving the recording characteristics and uniformity in a CAV recording on a phase-change optical recording medium, particularly a high-speed rewritable DVD medium, and a phase-change optical recording medium and an optical recording apparatus used by the method. Regarding a recording method for recording on the phase-change optical recording medium where a recording light comprises a pulse string of heating and cooling pulses, and a light for erasing, an irradiation power is controlled by peak power (Pp), bottom power (Pb) and erase power (Pe), at least any one of Pe/Pp, Pp, Pb and Pe is variable from the minimum to maximum recording linear velocities allowed for the medium, and further the irradiation time of each pulse is varied proportionally with clock T corresponding to a recording linear velocity, the present invention provides an optical recording method which performs a recording by varying at least Pe/Pp from a specific recording linear velocity lower than a peculiar recording linear velocity at which the recording linear velocity degrades abruptly showing a local maximum value, and an optical recording medium and an optical recording apparatus used by the method.

Optical recording method of a phase-change optical recording medium having improved recording characteristics and uniformity and optical recording medium and optical recorder used by the method

It is an object of the present invention to provide a phase-change information recording medium, and the like, which is easy to perform initial crystallization, exhibits good recording sensitivity at a linear velocity as high as 10 double speeds or more with as much capacity as DVD-ROM, is capable of overwrite recording and has good storage reliability. For this purpose, the phase-change information recording medium comprises a substrate and at least a first protective layer, a phase-change recording layer, a second protective layer, and a reflective layer disposed on the substrate in one of this sequence and reverse sequence wherein the phase-change recording layer comprises a composition expressed by SnSbGaGeTe&#x2212;X(In this regard, X represents at lease one element selected from Ag, Zn, In and Cu. &#x3b1;, &#x3b2;, &#x3b3;, &#x3b4;, &#x3b5; and &#x3b6; represent composition ratio (atomic percent) of each element and are expressed as 5&#x2266;&#x3b1;&#x2266;25, 40&#x2266;&#x3b2;&#x2266;91, 2&#x2266;&#x3b3;&#x2266;20, 2&#x2266;&#x3b4;&#x2266;20, 0&#x2266;&#x3b5;&#x2266;10, 0&#x2266;&#x3b6;&#x2266;10 and &#x3b1;+&#x3b2;+&#x3b3;+&#x3b4;+&#x3b5;+&#x3b6;=100).

Phase-change information recording medium, manufacturing method for the same, sputtering target, method for using the phase-change information recording medium and optical recording apparatus

An optical recording method of recording information to a phase change optical recording medium with alternate application of peak power and bias power in a pulse manner and with changing a pulse application. interval continuously from an inner part through an outer part of the recording medium with an interval proportional to a window width Tw and a fixed interval, comprising the step of starting a top peak power application interval with a delay from a data input pulse signal starting time for a target mark length nTw, where n denotes an integer in a range between 3 and 14, with changing the delay in proportion to the window width Tw with changing a proportionality factor discretely with respect each linear velocity.

Optical recording method

An optical recording method of recording information to a phase change optical recording medium with alternate application of peak power and bias power in a pulse manner and with changing a pulse application interval continuously from an inner part through an outer part of the recording medium with an interval proportional to a window width Tw and a fixed interval, comprising the step of starting a top peak power application interval with a delay from a data input pulse signal starting time for a target mark length nTw, where n denotes an integer in a range between 3 and 14, with changing the delay in proportion to the window width Tw with changing a proportionality factor discretely with respect each linear velocity.

The present invention provides a recording method for a phase-change optical recording medium. The recording method of the present invention contains the step of irradiating an electromagnetic wave having a multipulse pattern so as to perform recording on a phase-change optical recording medium containing a phase-change recording layer. This method is characterised in that a starting time of a front pulse of the multipulse pattern delays 0.5T to 1.25T from a starting point of the first reference clock relative to the recording mark, where T is a reference clock of the multipulse pattern.

Recording method for a phase-change optical recording medium

An optical disc having a transition linear velocity of 8-11 m/s when irradiating continuous light with 11&#xb1;1 mW and a wavelength of 660&#xb1;10 nm using a pickup head with a numerical aperture (NA) of 0.65, and satisfying the following condition:&#x394;R=|Rb&#x2014;Ra|&#x2266;3%where Rb is a reflectance of an unrecorded area, and Ra is a reflectance of the top of an eye pattern after ten cycles of recording. In one recording mode therefor, the disc is rotated at a constant angular velocity so as to have a linear velocity of 3&#x2013;4 m/s on an innermost track and a linear velocity of 8&#x2013;9 m/s on an outermost track. In another mode, the disc is rotated at a constant angular velocity so as to have a linear velocity of 5&#x2013;6 m/s on an innermost track and a linear velocity of 13&#x2013;14 m/s on an outermost track.

A phase change optical recording medium having a wide recording power margin and excellent durability to repetitive recording is disclosed. The medium includes a first protective layer, a recording layer, an interface layer, a second protective layer, and a reflective layer, the layers disposed on a transparent substrate, wherein the interface layer includes a mixture of ZrO. Preferably, the medium further includes a second interface layer including the mixture of ZrObetween the first protective layer and the recording layer. In another preferable aspect, the mixture of ZrOis represented by the following formula:[(ZrO)(X)](Z)(ZnS) wherein 'X' represents an oxide selected from MgO, CaO, ScO, YO, and CeO; 'Z' represents an oxide selected from TiO, SiO, AlO, MgO, TaO, and ZnO; &#x201c;&#x3b1;&#x201d; is 2-15 mol %; &#x201c;&#x3b2;&#x201d; is 40-100 mol %; &#x201c;&#x3b3;&#x201d; is 0-60 mol %; &#x201c;&#x3b4;&#x201d; is 0-60 mol %; and &#x3b2;+&#x3b3;+&#x3b4;=100 mol %.

Phase change optical recording medium

An optical recording medium comprising a recording layer which comprises a phase-change recording material causing a reversible phase change between a crystalline phase and an amorphous phase by irradiation with an electromagnetic wave, wherein the phase-change recording material mainly comprises materials expressed by the composition formula X&agr;Ge&bgr;Mn&ggr;Sb&dgr;Te&egr; with each of the components respectively fulfills 0&lE;&agr;&lE;5, 1&lE;&bgr;&lE;5, 1&lE;&ggr;&lE;10, 65 &lE;&dgr;<80, 15&lE;&egr;&lE;25, and &agr;&lE;&ggr; (where X expresses at least one of Ga and Sn, &agr;, &bgr;, &ggr;, &dgr;, and &egr; expresses atomic percentage, and fulfills &agr;&plus;&bgr;&plus;&ggr;&plus;&dgr;&plus;&egr;&equals;100).

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Kanagawa, Japan

Mikiko Abe