摘要:
An amplifying apparatus includes a magneto-resistive device which has a magnetic free layer, a magnetic pinned layer having a magnetic moment larger than that of the magnetic free layer, and an intermediate layer provided in between the magnetic free layer and the magnetic pinned layer. The amplifying apparatus has a first electrode layer provided in a magnetic free layer side of the magneto-resistive device, and a second electrode layer provided in a magnetic pinned layer side of the magneto-resistive device. The amplifying apparatus further includes a direct-current bias power-source for applying a direct-current bias to the magneto-resistive device, and a load resistor. The amplifying apparatus continually causes the change of a magnetization direction of the magnetic free layer to make the magneto-resistive device show negative resistance, and thereby amplifies an input signal.
摘要:
It is an object of the present invention to more strongly protect data to be distributed from being illegally plagiarized, and further, to add an electronic watermark function necessary to protect the copyright to all reproduction means apparatuses. In order to achieve the above-described objects, according to the present invention, data targeted for protection is encrypted, and an encryption key required for decrypting this encrypted data and reproduction control data for protecting the copyright are embedded in encrypted data through the use of the electronic watermark. Thus, when reproducing the data, the electronic watermark is detected, and the encryption key required for decrypting the cryptogram and the reproduction control data for protecting the copyright are restored. Through the use of the restored encryption key, the cryptogram is decrypted. Thus, through the use of the reproduction control data restored, the reproduction of the data targeted for protection is controlled.
摘要:
A data reproduction method and apparatus includes first circuitry to produce an information signal from a storage medium. The information signal includes copy control information. Detection circuitry is provided to detect the copy control information. Control circuitry is provided to operate the first circuitry to selectively output the information signal based on the detection result of the detection circuitry.
摘要:
An ion beam processing system emitting an ion beam at a workpiece to process the workpiece, provided with an electrode for applying an electric field to the workpiece, the potential of the electrode being made 0V or a negative potential, and a cover insulated from the electrode arranged at an ion beam incidence side of the electrode, thereby preventing or suppressing sputtered particles from redepositing on a master pattern and the processed surface to form burrs, and an ion beam processing method used with the same.
摘要:
Provided is an optical disk manufacturable by a conventional recording medium manufacturing method and that is capable of performing recording with an information recording apparatus used to perform recording on conventional recording mediums, and a data recording apparatus for recording contents data. An optical disk 100 has a structure in which a first substrate 110 and a second substrate 120 are bonded together. The first substrate is provided with a recording layer in which contents data is recorded, and the second substrate is provided with a visual information recording layer in which information enabling visual recognition of, for example, the contents of contents data or a title of the contents data is recorded as visual information.
摘要:
A digital watermark information detection method for detecting information inserted as a digital watermark from contents has a step of converting the contents into a predetermined specified format and a step of trying to detect information from the converted contents. When a plurality of specified formats are defined in advance and detection of the information from the converted contents fails, the contents is converted into another specified format and the information detection is retried.
摘要:
Localized temperature increases inside integrated circuits due to heating at operation are prevented or controlled by electronic devices or wirings with CPP (current-perpendicular-to-plane) structure which has a current cooling effect. The CPP structure refers to a structure comprising a columnar electrically conductive portion and an insulator portion surrounding the conductive portion. The columnar portion is formed from the multilayered structure in a direction perpendicular to the plane of the layers, so as to allow a current to flow from an upper layer to a lower layer (or vice versa). The cooling effect is induced by current at the interface (or a plural of interfaces) of appropriately selected different kinds of materials (which are conductive substances in general, such as metals, semiconductors, and alloys thereof) in the columnar portion due to the Peltier effect when a current flows through the column. Temperature in minute range is detected by thermocouple with CPP structure. The thermocouple has two interfaces of different materials with a proper combination. When a temperature difference exists between two interfaces, a voltage which corresponds to product of the temperature difference and the Peltier coefficient at the interface is produced. In the same manner, the intensity of inferred can be also measured.
摘要:
An optical disc apparatus for recording information and/or reproducing on an optical disc which has at least two recording layers including layer 0 and layer 1 reproducible from one side of the disc. The apparatus includes an optical pickup having a laser source, an objective lens, and an actuator. A controller is provided which obtains a present layer information of a sector recording layer from light reflected from the disc, confirms a target layer information of a target recording layer, judges whether the present layer information is the same as the target layer information, and outputs a first control signal to the actuator when it is judged that the present layer information is layer 0 and the target layer information is layer 1, and outputs a second control signal to a slider.
摘要:
An air conditioner has a refrigeration circuit formed by sequentially connecting a compressor 1, a condenser 2, an electronic expansion valve 4 and an evaporator 7 by pipes (6, 10). A compressor bypass pipe 12 is provided to connect an outlet of the evaporator 7 with an inlet of the condenser 2. A first on-off valve 11 is located in the bypass pipe 12. The air conditioner is controlled to switch to either a forced circulation operation or a natural circulation operation. In the forced circulation operation, the first on-off valve 11 is closed, the expansion valve 4 is opened to a first degree to allow refrigerant to pass therethrough, and the compressor 1 is operated in a running state. In the natural circulation operation, the first on-off valve 11 is opened, the expansion valve 4 is opened to a second degree, different from the first degree, to allow refrigerant to pass therethrough, and the compressor 1 is stopped.
摘要:
Recording capacity per layer is detected from a disc and bit allocation of wobble addresses in a conventional optical disc and bit allocation in a high-density optical disc are controlled selectively to detect physical position addresses on the disc. Address detection can be performed for two kinds of discs which are equal in structure of addresses embedded in wobbles but different in bit allocation of addresses.