| ReturnTo Theme-Group-Choice | Onelevelup |
| 5D075 | Other method of recording or reproducing (optically and magnetically) (2) | |
| G11B11/00 -13/08 | ||
| G11B11/10,502;11/105,551-11/105,591 | AA | AA00 Recording and reproducing device |
AA01 | AA03 | AA05 | AA08 | AA10 | |||||
| . Tape recording and reproducing device | . Disc recording and reproducing device | . Card or sheet recording and reproducing device | . Read out device using reproducing by transferring to magneto-optical member | . Other recording and reproducing devices | ||||||||
| BB | BB00 Recording signal |
BB01 | BB02 | BB03 | BB04 | BB05 | BB06 | BB07 | BB08 | BB10 | ||
| . Analog signal | . . Analog voice signal | . . Analog video signal | . Digital signal | . . Digital voice signal | . . Digital video signal | . . . Image data (texts, graphics, etc.) | . . Code data | . Other signals | ||||
| CC | CC00 Method, system, whole structure of device, others |
CC01 | CC02 | CC04 | CC05 | CC07 | CC08 | |||||
| . Recording system | . . Overwrite system | . . Magnetic field modulation system | . . Optical modulation system | . . Curie temperature recording type | . . Compensation temperature recording type | |||||||
| CC11 | CC12 | CC13 | CC14 | CC16 | ||||||||
| . Reproducing method | . . Using Kerr effect (reflected light) | . . Using Faraday effect (transmitted light) | . . Using Kerr effect and Faraday effect | . Erasing system | ||||||||
| CC21 | CC22 | CC23 | CC24 | CC26 | CC28 | CC29 | ||||||
| . Signal processing | . . Recording signal processing | . . Reproducing signal processing | . . Detection of information signal from output of photodetector | . Monitor | . Testing, inspection, measuring | . . Testing, inspection or measuring of record carrier | ||||||
| CC31 | CC32 | CC33 | CC35 | CC37 | CC39 | CC40 | ||||||
| . Control of operating function of recording and reproducing device | . . Prevention of miserasing or double recording | . . Discrimination of record carrier | . Driving of record carrier | . Insertion, mounting or ejecting of record carrier | . Reproducing according to means other than optical means | . Others | ||||||
| CD | CD00 Optical head |
CD01 | CD02 | CD03 | CD04 | CD06 | CD07 | CD08 | CD09 | CD10 | ||
| . Whole structure of optical system | . . Recording optical system | . . Reproducing optical system | . . Erasing optical system | . Light beam source | . . Using an a plurality of light beam sources | . . Prevention of return light to light beam source | . Control or adjustment of light beam | . . Control or adjustment of size or shape of light beam | ||||
| CD11 | CD12 | CD13 | CD14 | CD15 | CD16 | CD17 | CD18 | CD19 | CD20 | |||
| . . Control or adjustment of intensity of light beam | . . . Means for modulating intensity of light beam | . . Varying polarization state (example: wave length plate) | . Means for guiding light beam | . . Means for scanning light beam | . . Coupling or splitting of light beam | . . Lens | . . Other optical elements | . Photodetector | . Others | |||
| CE | CE00 Arrangement or mounting of optical head |
CE01 | CE02 | CE03 | CE04 | CE05 | CE06 | CE07 | CE08 | CE09 | ||
| . Positional control of optical head or light beam | . . Control direction | . . . Perpendicular to carrier surface, focusing control | . . . Direction transversing track, tracking control | . . . Track direction, tangential control | . . Control system | . . . Error sensing portion | . . . Servo circuit | . . . Means for driving optical head or light beam | ||||
| CE11 | CE12 | CE13 | CE14 | CE15 | CE17 | CE20 | ||||||
| . Moving of optical head or light beam (excluding control) | . . Moving in direction perpendicular to carrier surface | . . Moving in direction transversing track | . . . Track accessing, track changing | . . . Moving mechanism | . Supporting or mounting of optical head | . Others | ||||||
| CF | CF00 Means for applying magnetic field (example: magnetic head) |
CF01 | CF02 | CF03 | CF04 | CF06 | CF07 | CF08 | CF10 | |||
| . Using permanent magnet | . . Application of magnetic field, Polarity reversal of magnetic field | . Using coil or electromagnet | . . Control or adjustment of magnetic field | . Position control for means for applying magnetic field | . Moving of means for applying magnetic field | . Supporting or mounting of means for applying magnetic field | . Others | |||||
| G11B11/10;11/105 | DD | DD00 Information on record carrier |
DD01 | DD03 | DD04 | DD05 | DD06 | DD09 | ||||
| . Arrangement of information on record carrier | . Pertaining to information signal | . Pertaining to tracking control signal | . Pertaining to address signal | . Pertaining to synchronization signal | . Pertaining to other signals | |||||||
| G11B11/10,500;11/105,501-11/105,546 | EE | EE00 Whole shape of record carrier |
EE01 | EE03 | EE05 | EE10 | ||||||
| . Tape | . Disk | . Card or sheet | . Other shapes | |||||||||
| FF | FF00 Recording layer |
FF01 | FF02 | FF03 | FF04 | FF06 | FF07 | FF08 | ||||
| . Material of recording layer | . . Metal magnetic material | . . . Amorphous material | . . . . are earth-transition metal group | . . Oxide magnetic material | . . . Ferrite group | . . . Garnet series | ||||||
| FF11 | FF12 | FF13 | FF15 | FF20 | ||||||||
| . Structure of recording layer | . . Recording layer consisting of a plurality of layers | . . . Different layers for recording and for reproducing | . . For multiple recording | . Others | ||||||||
| FG | FG00 Layer or substrate other than recording layer |
FG01 | FG02 | FG03 | FG04 | FG05 | FG06 | FG07 | FG10 | |||
| . Reflection layer | . Layer pertaining to heat absorption, thermal insulation or heat equalization | . Layer with interference effects | . Protective layer | . Adhesive layer | . Layer for forming control signal | . Conductive layer | . Other layers | |||||
| FG11 | FG12 | FG13 | FG14 | FG15 | FG17 | FG18 | ||||||
| . Substrate | . . Substrate material | . . . Ceramics, glass | . . . Metal | . . . Resin | . . Shape or structure of substrate | . . . Providing guide groove on substrate | ||||||
| FH | FH00 Whole structure of record carrier, container, others |
FH01 | FH02 | FH03 | FH04 | FH06 | FH10 | |||||
| . Whole structure of record carrier | . . Combination of layers, laminated construction | . . Providing recording layers on both sides | . . Provided with both photo-electromagnetic recording layer and other recording layer | . Container | . Others | |||||||
| GG | GG00 Manufacturing of record carrier |
GG01 | GG02 | GG03 | GG04 | GG06 | GG07 | |||||
| . Type of layer (membrane) | . . Vapor deposition | . . Sputtering | . . Application | . Shaping or processing of substrate | . . Compression molding, injection molding | |||||||
| GG11 | GG12 | GG13 | GG14 | GG16 | GG20 | |||||||
| . Manufacturing equipment | . . Device for forming membrane | . . Device for shaping substrate | . . . Die, stamper | . Manufacturing method | . Others |