Yamaha Corporation

Fujifilm Corporation

Nippon Gakki Seizo Kabushiki Kaisha

Tatsuo Fushiki

Hisanori Itoga

Seiya Yamada

Hiroshi Kubo

Michihiro Shibata

Takuya Tamaru

Kazuya Mushikabe

Katsuichi Osakabe

Yusuke Konagai

Kazuhiko Honda

Akira Usui

Sadayuki Narusawa

Kentaro Nomoto

Masaki Dojun

Jun Asami

Before a host computer transmits image forming data to a CD-R drive, the CD-R drive transmits information of an image forming condition preset in the CD-R drive to the computer. The host computer generates, based on stored original image data, image forming data adapted to the image forming condition on the basis of the information of the image forming condition and transmits the generated image forming data to the CD-R drive. The CD-R drive forms a visual image according to the preset image forming condition on the basis of the transmitted image forming data.

Optical disk image forming method, optical disk image forming apparatus, and computer readable recording medium storing optical disk image forming program

The invention provides an optical disk system having at least: an optical disk including, on a substrate having pre-pits, an image-recording layer capable of drawing an image by irradiating a laser light; and a reading device which reads information included in the pre-pits by a return light of the laser light when the laser light having a wavelength of in a range of 630 to 680 nm is irradiated to the pre-pit of the optical disk. The pre-pits have a shortest pit length in a range from 0.6 to 0.9 &#x3bc;m being formed on the substrate. The invention further provides an optical disk recording apparatus, an image drawing method and an optical disk which utilize the optical disk system.

Apparatus and method for forming image data on an optical disk

When an optical disk image forming device forms an image on an optical disk, the image forming device reads information of kinds of coloring matters used in an image forming area from information described in an information area of the optical disk. Then, the optical disk image forming device reads from a table laser power strength information corresponding to the information of the kinds of the coloring matters and a maximum linear velocity (Nx) at the time of forming the image and applies a laser beam having this laser power strength to form the image on the image forming area of the optical disk. Thus, since the discoloration of the coloring matter in the image forming area is always saturated, the image having a constant contrast can be formed on the image forming area of the optical disk.

Optical disk image forming device and optical disk image forming method

The present invention provides an optical disc on which a visible image can be formed by irradiation of laser light, which comprises a logo area on which visible information is indicated, a pre-pit signal area, and an image forming area on which a visible image can be formed by irradiation of laser light; and an image forming method of forming a visible image by irradiation of laser light on an optical disc, the method including detecting a pre-pit signal from a pre-pit signal area formed on the optical disc, and forming the visible image based on the result of the detection, wherein the optical disc is the optical disc of an aspect of the invention.

Optical disc and method for image forming thereon

An optical disk is equipped with a predetermined mark. A frequency generator outputs an FG pulse of frequency corresponding to the rotational speed of a spindle motor used for rotationally driving the optical disk. The edge of the FG pulse detected by an edge detection section is counted by an FG counter. An angle counter measures the duration of a time from appearance of an edge of the FG pulse until a point in time when the mark affixed to the optical diskis detected. A count value of the FG counter, which has been acquired at the point in time when the mark is detected, and a count value of the angle counter are saved. In a case where a visible image is rendered, encoding of a visible image to be rendered is started when the count value of the FG counter and the count value of the angle counter have become equal to the respective saved values.

Optical disk recording apparatus and method of forming visible image on optical disk

A system control unit writes image data received from a host apparatus into a first storage regions. Next, the system control unit produces duplication data from the image data written in the first storage region, and then, writes these produced duplication data into a second storage regions. Furthermore, the system control unit furthermore produces duplication data from the image data written in the second storage region, and writes these produced duplication data into a third storage region. As a result, 1 piece of the image data and 2 pieces of the duplication data can be prepared on a buffer memory. The optical disk drawing apparatus draws an image on a drawing layer of an optical disk by employing these image data and duplication data.

Optical disk drawing apparatus

In the optical disk drawing apparatus of the present invention, an automatic adjusting area where the drawing operation is not carried out is provided in the optical disk, laser light is irradiated onto the formed automatic adjusting area so as to control the focus servo gain, so that a stable focus servo control can be carried out.

Optical disk drawing apparatus, optical disk drawing system and optical disk drawing method

When an image is formed on an optical disk, an optical disk image forming device reads information written in an information area of the optical disk. When a reflection preventing process is applied to an image forming area of the optical disk, the optical disk image forming device corrects at least one of a laser power or a focus gain in accordance with information about the image forming area written in the information area. Thus, the optical disk image forming device can form the image with a clear brightness and a good visibility on the image forming area of the optical disk without allowing a rainbow-color to appear or a face or a background to be reflected due to the interference of light.

Optical disk image forming device, optical disk image forming method and optical disk

An optical pickup is opposed to an inner-radius portion of an optical disc that is set, and pits (a modulation signal) are read by applying laser light for a DVD to the inner-radius portion. The read-out modulation signal is decoded by inputting it to a CD decoder. If decoded disc information includes particular verification data, the optical disc is judged to be a legitimate optical disc of a particular type and formation of a visible image on the label surface is permitted.

Optical disk processing apparatus

An optical disk image drawing method includes: rotating the optical disk by a spindle motor; reading a predetermined information recorded on a track of a data recording layer; detecting a predetermined position on the track based on the read predetermined information; measuring a position of the spindle motor in a rotating direction using the detected predetermined position as a reference position; changing a focus position of the laser beam to the image drawing layer; starting forming the visible image on the image drawing layer from a predetermined position of the spindle motor in the rotating direction relative to the reference position based on the measured position of the spindle motor in the rotating direction; and sequentially moving an optical pick-up in the radial direction synchronously with the rotation of the spindle motor to proceed to form the visible image.

Optical disk image drawing method

An optical disk image forming apparatus that forms an image on an optical disk, comprises: an optical disk drive that includes a rotating unit for rotating an optical disk and a laser light irradiating unit being movable in a radial direction of the optical disk; and a control unit that sets a plurality of pixel areas on the optical disk, allocates predetermined writing densities to the plurality of pixel areas, respectively, and controls the optical disk drive to irradiate the laser light onto each pixel area according to the allocated writing densities. When the allocated writing density is a halftone writing density, the control unit corrects the halftone writing density so as to be lighter darker than the allocated writing density.

Optical disk image forming apparatus and optical disk image forming method

When 'buffer under run' (BUR) occurs during recording of a visible image on an optical disk, recording operation is interrupted. As in the case of type A, when BURoccurs after data have been transferred through an integral multiple of one revolution, data are recorded continuously from a reference angle position without host device discarding data. As in the case of type B, when BURoccurs after data have been transferred in a value which is other than the integral multiple of one revolution, data corresponding to a duration from the position where BUR occurs to the start of the next revolution are discarded, data are continuously recorded from the reference angle position. Thereby, rendering can be spliced in a visually-smooth manner. Further, as in the case of type C, when the volume of data remaining in a buffer has become equal to or less than a 'buffer under run' threshold value, subsequent transfer of data from the host device may be interrupted, and rendering may be resumed without the host device discarding data.

Optical disk recording system for recording visible images capable of handling 'buffer under run' errors

A pertinent amount of Image data of an image to be drawn on a surface of an optical disc is intermittently transmitted from a computer to an optical disc image drawing apparatus. The optical disc image drawing apparatus stores the transmitted image in a buffer memory and successively reads the stored image data in a constant speed to performing the drawing operation on the surface of the optical disc. The computer counts the total amount of image data of transmission is completed and calculates a drawing radial position, which corresponds to the counted total amount with a currently drawing radial position. The computer displays a picture of the drawing image on a display so that the currently drawing radial position calculated above can be visually recognized.

Optical disc image drawing method, optical disc image drawing program, and optical disc image drawing system

An optical disk has inner and outer information areas respectively in inner and outer portions thereof in each of which a groove is formed at a predetermined width. A planar mirror surface is provided without forming a groove, in an area lying between the areas. When a laser beam is applied to the area to form a visible image, visible-image information, capable of representing the position, shape and size of an area occupied by the visible image, is formed and recorded in the area. When additionally forming a visible image, the image area information is read from the area to display on an edit screen an optical disk and an area of a visible image already formed on the surface of the disk. The user is allowed to determine a newly-recording visible image and its position by use of the edit screen.

Method and apparatus for forming visible image on optical disk

An optical disk recording apparatus operates on an optical disk having circular tracks which are provisionally written with an index signal used for securing a constant linear velocity of the optical disk from an innermost circular track to an outermost circular track, and records data along the circular tracks at different linear densities on different annular zones of the optical disk. In the apparatus, a disk drive section rotates the optical disk while synchronizing the index signal successively read from the rotated optical disk with a predetermined reference clock signal to thereby maintain the constant linear velocity of the circular tracks. A clock generating section multiples or divides the reference clock signal by different rates to generate different writing clock signals in correspondence to the different annular zones of the optical disk. A data recording section operates in synchronization to the different writing clock signals for recording data along the circular tracks at the different linear densities on the different annular zones.

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Hamamatsu, Japan

Tatsuo Fushiki