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| Number | Title | Issue Date |
| 6527904 | Method of producing an optical video disc The method of producing a two-disc laminated optical video disc, includes first forming, on a first substrate, a first reflecting film capable of partially reflecting and partially transmitting a laser beam. Next on a second substrate, a second reflecting... | 03/04/2003 |
| 6464485 | Ultrasonic injection mold for an optical disk An ultrasonic injection mold for an optical disk includes a movable die and a fixed die; a disk molding cavity formed between the movable die and the fixed die; a stamper positioned at the bottom of the cavity for forming a pit on a surface of the disk; a... | 10/15/2002 |
| 6404729 | Optical disc An optical disc comprises; a substrate; grooves concentrically or helically formed on the substrate in each of which data is recorded; lands defined between the adjacent grooves; and prepits formed on the lands, wherein each of the prepits is disposed to ... | 06/11/2002 |
| 6330129 | Cartridge case for a disk-shaped recording medium and a disk cartridge A cartridge consists of a case and a disk housed therein. The case has a case body in which a head access window and a drive spindle access window are formed. The case has a shutter to open and close the head access window and the drive spindle access win... | 12/11/2001 |
| 6330037 | Picture signal processing method for processing a picture signal containing information including main picture portion and non-picture portions A picture signal processing method is provided for processing a picture signal containing information including main picture portion and non-picture portions. This method comprises: detecting boundary portions existing between the main picture portion and... | 12/11/2001 |
| 6312547 | Method for manufacturing optical disks A method is disclosed for manufacturing an optical disk with multiple layers efficiently with improved reliability. An optically transparent sheet is laminated on a first information recording surface, and an ultraviolet light hardened resin is formed the... | 11/06/2001 |
| 6266110 | Semiconductor device reeventing light from entering its substrate transistor and the same for driving reflection type liquid crystal An uppermost metal wiring layer is formed of titan Ti and titan nitride TiN formed thereon, on which tungsten W for filling a via hole can be deposited. The via hole is filled with W. The surface of a metal wiring layer below the uppermost metal wiring la... | 07/24/2001 |
| 6212038 | Shutter mechanism for disk cartridge A slide mechanism for a shutter, installed on a cartridge case of a disk cartridge, which is slidable in both right and left directions relative to the cartridge case from a neutral position at which a head access opening is closed by the shutter, and whi... | 04/03/2001 |
| 6157517 | Shutter mechanism for disk cartridge A slide mechanism for a shutter, installed on a cartridge case of a disk cartridge, which is slidable in both right and left directions relative to the cartridge case from a neutral position at which a head access opening is closed by the shutter, and whi... | 12/05/2000 |
| 6136133 | Method of producing optical disc of bonded type A method of producing an optical disc of bonded type includes the processes of: (A) forming a first reflection film, which is half transparent for partially reflecting and partially transmitting an incident light, on a first information record surface of ... | 10/24/2000 |
| 6132545 | Method of producing an optical video disc A method of making a two-disc laminated optical disc, comprises: continuously producing two synthetic resin discs in one injection molding machine using one stamper; forming a reflecting film and a protection film on each synthetic resin disc; and bonding... | 10/17/2000 |
| 6128271 | Optical recording medium An optical recording medium comprises a substrate layer formed with a plurality of grooves having a pitch of 0.7-0.9 μm, further with a plurality of prepits located between the grooves and separated from each other at a predetermined interval; a recordin... | 10/03/2000 |
| 6075761 | Optical recording medium having pits that are formed with respect to a wobbled groove at substantially constant positions in each cycle of the groove having a pit An optical recording medium for accurately deriving the address information or the disc rotation control information despite narrow track pitch and for recording signals to a high density, and a method and apparatus for recording and/or reproducing such o... | 06/13/2000 |
| 6052340 | Turntable for optical recording disc recording apparatus An optical mother disc recording apparatus is disclosed, which can effectively solve problems including a decrease in film thickness and the like and can be miniaturized. The optical mother disc recording apparatus comprises a turntable for supporting an ... | 04/18/2000 |
| 6049132 | Multiple metallization structure for a reflection type liquid crystal display In a semiconductor chip for Si chip based liquid crystal having insulating films and interconnection layers formed on a semiconductor substrate, a thin interconnection layer made of TiN/Ti having strong erosion resistance is formed on an uppermost interla... | 04/11/2000 |
| 6025893 | Liquid crystal display device of reflection type A liquid crystal display device of reflection type has a liquid crystal display panel and a fixture substrate for fixing the liquid crystal display panel. The liquid crystal display panel is provided with: a semiconductor substrate; a transparent substrat... | 02/15/2000 |
| 5990988 | Reflection liquid crystal display and a semiconductor device for the display A liquid crystal display device has a semiconductor substrate. A plurality of switching elements are arranged on the substrate in matrix, and a plurality of pixel electrodes are provided above the switching elements, arranged in matrix corresponding to th... | 11/23/1999 |
| 5926453 | Optical disk having first and second recording areas with wobble frequencies that do not interfere with EFM signal A recordable optical disc on which information is recorded by applying a light beam on the surface thereof, includes: a first recording area on which information is recorded and reproduced while the disc is rotated at a first linear velocity; and a second... | 07/20/1999 |
| 5901123 | Method and apparatus for recording information, including control information, onto an information record medium By the control information recording method, control information to control at least one of recording and reproducing operations of record information on an information record medium is recorded onto a guide track of the information record medium. The con... | 05/04/1999 |
| 5894299 | Drive system for a flat type display device The number of vertical scanning in one field of a video signal is detected, and the number of scanning lines pulses at each row electrode of a liquid crystal display is determined in accordance with the difference between the determined number of vertical... | 04/13/1999 |
| 5888900 | Method for manufacturing semiconductor device and reticle for wiring A method for manufacturing semiconductor device is provided, this method comprises the steps of: depositing a metal film for forming wirings on a substrate; forming a wiring layer, wherein dummy wiring is inserted between wiring space where the dummy wiri... | 03/30/1999 |
| 5883879 | High density optical disc configuration An optical disc includes two transparent substrate layers each having a recording surface with a plurality of pits arranged concentrically or spirally. The plurality of pits represents information stored on the recording surface. Each transparent substrat... | 03/16/1999 |
| 5859730 | Optical apparatus having a luminous flux shaping filter An optical apparatus including a luminous flux shaping filter for converting a shape of an incident beam without bending an optical path of the incident beam. A light beam emitted from a focusing laser source comprising a semiconductor laser is converted ... | 01/12/1999 |
| 5827593 | Disc substrate used for an optical disc and a molding die for molding the same A disc substrate inject-molded comprises; a first circular surface having an inner non-data region formed around a center hole thereof and an outer data region formed around the non-data region; a second circular flat surface opposite and parallel to the ... | 10/27/1998 |
| 5824385 | Optical disc and method for manufacturing the same An optical disc has a pair of light-transmissible circular substrates each having an inner non-data region disposed around a center hole thereof, a data region disposed around the inter non-data region for bearing signals corresponding to information to b... | 10/20/1998 |
| 5820961 | Laminated optical discs In order to provide a laminated optical disc having a sufficient display portion and a reliable print display, a pair of disc substrates are bonded together to form an optical disc, in which one disc substrate is colored and contents of recorded matters a... | 10/13/1998 |
| 5822775 | Efficient data processing method for coefficient data in a digital dignal, processor A coefficient data transfer processing method for a digital signal processor which has a coefficient address pointer independent of a program counter, whereby a processing program and coefficient data are transferred and supplied from a microcomputer dete... | 10/13/1998 |
| 5805343 | Optical element and a method for forming the same An optical element includes a light-transmittable substrate and a light-transmittable dry-light-curing-film layered on the substrate and having an undulant pattern on a surface thereof, characterized by the dry-light-curing-film has a specific range visco... | 09/08/1998 |
| 5787224 | Device for and method of editing information A device for editing information includes: a device for encoding a plurality of unit information each having a predetermined length and outputting the coded unit information consecutively at a first rate; a device for generating additional information to ... | 07/28/1998 |
| 5754874 | Digital signal processor with selective sound operation A digital signal processor (DSP) comprises a condition flag register directly accessible by the control microcomputer. Referring to a condition flag of the condition flag register every sampling period of the DSP, the DSP can change the content of a proce... | 05/19/1998 |
| 5751690 | Optical disk having pattern displayed thereon and apparatus for manufacturing same An optical disk in which a pattern such as a character that can be recognized is displayed in an information recording area by display pits or grooves formed between recording tracks constructed by pit trains indicative of information signals. An apparatu... | 05/12/1998 |
| 5748607 | Optical disc having large display patterns and its manufacturing apparatus An optical disk having both recording surfaces on which are formed pits trains. A recognizable display pattern is formed by a group of dummy pits formed on one of the recording surfaces. An apparatus for manufacturing the optical disk in which a light bea... | 05/05/1998 |
| 5742567 | Master optical disk recording apparatus A master optical disk recording apparatus forms a train of pits on a recording layer of a master optical disk by a laser beam which is emitted from the laser light source and is modulated by an acousto-optic modulator. An objective lens in the recording a... | 04/21/1998 |
| 5675570 | Optical disc having indication portion An optical disc is provided with: a disc substrate of light transmissive type having an information record surface including an information recorded region, where pits or grooves carrying an information signal are coaxially or spirally formed, and an info... | 10/07/1997 |
| 5673251 | Two substrates bonding type optical disk and method of producing the same This optical disk is two-substrates bonding type. In the optical disk, from the first transparent substrate side toward the second substrate side, at least following layers are laminated in that order; (1) the first transparent substrate, (2) the first op... | 09/30/1997 |
| 5673359 | Recording disk and recorded information reproducing apparatus A recording disk carrying a compressed video signal at a high recording density and a recorded information reproducing apparatus for reproducing the information recorded on the particular recording disk. A linear velocity of the reading of information is ... | 09/30/1997 |
| 5666460 | Compressed picture information recording apparatus performing in real time A compressed picture information recording apparatus which sequentially stores modulated compressed video signals in a memory, and reads information from the memory in such a way as to reduce the information reading speed when the remaining memory space b... | 09/09/1997 |
| 5606426 | Digital time base corrector for reproducing video signals A digital time base corrector in which a memory for correction of a time base is commonly used as a memory for correction of a drop-out and a signal process to a video signal which is replaced by a drop-out compensation is made unnecessary. The corrector ... | 02/25/1997 |
| 5579121 | Real-time image compression processor A real-time image compression processor records on a CD or other recording media a compressed video signal which is compressively processed in a high recording efficiency at real-time as being reproduced by a VTR while preventing the image quality from be... | 11/26/1996 |
| 5572500 | Optical filter with light transmittance dependency on incident angle An optical reproducing system has a first optical path from a light source to an optical disc, and a second optical path from the optical disc to a photodetector. An objective lens is provided in the first optical path for forming an a non-collimated beam... | 11/05/1996 |
