摘要:
A printed circuit board includes a ground layer, a power supply layer divided into a plurality of lands, a dielectric layer disposed so as to cover the plurality of lands of the power supply layer, and a conductor layer disposed so as to cover the dielectric layer. The plurality of divided lands are coupled to each other by electrostatic capacitors formed by each of the lands of the power supply layer and the conductor layer sandwiching the dielectric layer therebetween.
摘要:
An electronic apparatus is adapted to be used with a portable storage medium installed therein. The apparatus includes a mounting portion in which a unit for driving a portable storage medium is mounted. The mounting portion is constituted by a metal plate. When a storage medium is installed, an opening of the metal plate into which said storage medium is inserted is electrically connected between an upper portion and a lower portion thereof, so that the metal plate does not resonate with radio waves generated outside of the apparatus.
摘要:
A display panel module such as a liquid crystal display (LCD) panel module in an electronic apparatus is designed to receive a driving signal of a predetermined frequency. An electrically conductive frame or bezel of the display panel module tends to suffer from the transmission of electromagnetic waves which are related to the wavelength of the driving signal. An electrically conductive member is located behind the display panel and electrically connected to the electrically conductive frame. The electrically conductive member serves to diverge the electromagnetic waves out of the electrically conductive frame. This divergence of the electromagnetic waves serves to suppress the electromagnetic radiation out of the electrically conductive frame.
摘要:
An SG pattern is provided at the circumference of the outermost layer of a printed circuit board and the SG pattern is connected to a frame ground of a case by grounding plates so that the space between connection points is smaller than a distance determined by a signal wavelength. The grounding plates are disposed at three sides other than the side at which a connector mounting plate is disposed to hold the printed circuit board therebetween by leaf spring-like contacts. The mounting plate is connected to the SG pattern to be electrically connected to the grounding plate.
摘要:
A mobile terminal capable of causing the user side to grasp whether or not a credit settlement service stops with a simple operation is provided. In the mobile terminal 10, validation and invalidation of a storage area within an IC chip assigned to an issuer application corresponding to one issuer are switched based on switching instruction information received from an issuer terminal 20 managed by one issuer. Then, when the issuer application starts, there is displayed in a lump whether or not the respective issuer applications are available on a display part 16, based on state information indicating whether or not the respective storage areas are validated. Therefore, in the mobile terminal 10, even if plural issuer applications are stored, it is possible to cause the user side to grasp which kind of the credit settlement service stops, with a simple operation of only starting a management application.
摘要:
A shield structure for an electronic element, includes a ground pattern provided in a board; and a first member having electrical conductivity, covering the electronic element, and connected with the ground pattern.
摘要:
A mobile device (10) has a noncontact IC (11). Three storage areas are preliminarily formed in the noncontact IC (11). When the mobile device (10) receives an application from a content server (20), a storage area (1) is assigned as a data area dedicated to this application. After that, the mobile device (10) rejects access from any application other than the foregoing application to the storage area (1).
摘要:
To provide a technology for making it possible to control enable/disable of an IC card function provided in a mobile device. A mobile device including an IC card unit for executing an IC card function, and a communication unit for carrying out communication through a radio telephone line detects a voltage of a battery unit for supplying an electric power to each of the IC card unit and the communication unit, judges whether or not the IC card function can be used in accordance with the detected voltage value, and issues an enable/disable instruction to the IC card unit in accordance with the Judgment results.
摘要:
The heat sink include a conductive heat dissipation portion for dissipating heat of an electronic component into the air, and a current limitation portion arranged on the heat dissipation surface of the heat dissipation portion and limiting a discharge current flowing between a material object located in proximity to the heat dissipation surface and the heat dissipation portion when discharge phenomenon takes place between the material object and the heat dissipation portion.
摘要:
To provide a technology for making it possible to control enable/disable of an IC card function provided in a mobile device. A mobile device including an IC card unit for executing an IC card function, and a communication unit for carrying out communication through a radio telephone line detects a voltage of a battery unit for supplying an electric power to each of the IC card unit and the communication unit, judges whether or not the IC card function can be used in accordance with the detected voltage value, and issues an enable/disable instruction to the IC card unit in accordance with the Judgment results.