摘要:
An electronic device is disclosed. The electronic device includes a housing, a circuit board, an antenna, electronic components, and a wiring part. The circuit board is built inside the housing on which an opening is formed. The antenna is facing one surface of the circuit board. Electronic components are disposed at the position facing the antenna through the circuit board, on the other surface of the circuit board, in a state such that the electronic components are not fixed to the circuit board The wiring part passes through the opening of the circuit board, with one end connected to the electronic components on one side of the circuit board and other end connected to the circuit board on the other surface of the circuit board.
摘要:
An electronic device is disclosed. The electronic device includes a housing, a circuit board, an antenna, electronic components, and a wiring part. The circuit board is built inside the housing on which an opening is formed. The antenna is facing one surface of the circuit board. Electronic components are disposed at the position facing the antenna through the circuit board, on the other surface of the circuit board, in a state such that the electronic components are not fixed to the circuit board The wiring part passes through the opening of the circuit board, with one end connected to the electronic components on one side of the circuit board and other end connected to the circuit board on the other surface of the circuit board.
摘要:
An object of the present invention is to provide a mobile terminal device capable of utilizing a conductive portion further more effectively. A cellular telephone device includes: a key switch, of which electrical state changes depending on an operation on an operation unit; a CPU that is connected to the key switch, and detects an operation on the operation unit based on change in the electrical state of the key switch; a power supply unit that is electrically connected to the key switch; and an RF circuit unit that is connected to the power supply unit, and processes a signal resonated by the key switch.
摘要:
An object of the present invention is to provide a mobile terminal device capable of utilizing a conductive portion further more effectively. A cellular telephone device includes: a key switch, of which electrical state changes depending on an operation on an operation unit; a CPU that is connected to the key switch, and detects an operation on the operation unit based on change in the electrical state of the key switch; a power supply unit that is electrically connected to the key switch; and an RF circuit unit that is connected to the power supply unit, and processes a signal resonated by the key switch.
摘要:
The present invention has an object of attaining further miniaturization and reducing the thickness of a portable wireless device with a built-in antenna. The cellular telephone device 1 according to the one embodiment of the present invention includes a case body 60 having a first case portion 62 which is arranged so as to cover the electronic components, along with being electrically conductive to the reference potential pattern, and a nonconductive second case portion 64 arranged to be continuous to the first case portion 62 along with being arranged in the outer periphery of the circuit substrate 70. In the portion that is arranged to be layered in the second case portion 64 in a flexible wiring substrate 50, an antenna element 66 is arranged.
摘要:
A mobile wireless device enables effective use of space in a case while reducing degradation of ah antenna gain and maintaining communication quality even if a plurality of antennas having different frequency bands are arranged close to one another. A magnetic antenna has a first switch unit, a second switch unit, and a concentrated constant circuit which are added to a wiring pattern at the side near to a main antenna, so that a first path and a second path can be selected. Under a predetermined condition, a CPU controls the first switch and the second switch to electrically connect a terminal (A1) to a terminal (B1) and electrically connect terminal (A2) to terminal (B2), thereby forming the first path; and electrically connect terminal (A1) to a terminal (C1) and electrically connect terminal (A2) to a terminal (C2), thereby forming the second path connected via the concentrated constant circuit.
摘要:
A mobile wireless device enables effective use of space in a case while reducing degradation of antenna gain and maintaining communication quality even if a plurality of antennas having different frequency bands are arranged close to one another. A magnetic antenna has a first switch unit, a second switch unit, and a concentrated constant circuit which are added to a wiring pattern at the side near to a main antenna, so that a first path and a second path can be selected. Under a predetermined condition, a CPU controls the first switch and the second switch to electrically connect terminal (A1) to terminal (B1) and electrically connect terminal (A2) to terminal (B2), thereby forming the first path; and electrically connect terminal (A1) to terminal (C1) and electrically connect terminal (A2) to terminal (C2), thereby forming the second path connected via the concentrated constant circuit.
摘要:
A portable electronic device and a magnetic field antenna circuit are provided for making it possible to keep an antenna resonance frequency in a fixed range even if temperature changes. A mobile telephone device (1) is provided with a second communication unit driven by a chargeable battery (43) to execute a predetermined function and an RFID unit (41) accompanied with magnetic communication. The RFID unit (41) includes a magnetic antenna unit (50), which can transmit or receive a wireless signal by a magnetic field, and a capacitor (52), one terminal of which is connected with the magnetic antenna unit (50) to generate a predetermined resonance frequency. The capacitor (52) is characterized in having a temperature-reactance characteristic reverse to an amount of an inductance value that fluctuates as the magnetic antenna unit (50) changes in accordance with temperatures.
摘要:
An electronic apparatus which makes it possible to reduce start-up time for starting the electronic apparatus, without necessitating installment of a plurality of CPUs in the electronic apparatus. A main CPU 45 controls a digital camera implementing the electronic apparatus. A storage medium for storing information can be detachably attached to a connector 97. A medium detection circuit 85 monitors a status of attachment and detachment of the storage medium to and from the digital camera, irrespective of a status of operation of the main CPU 45. The sensed status of attachment and detachment of the storage medium is stored in a register 115 of the medium detection circuit 85.
摘要:
In a method for detecting liquid drops adhering upon a front windshield with superior sensitivity but without obstructing drivers, a light beam emitted from a light emitting element 4 is guided into a light guiding body 7, and after undergoing total internal reflection within light guiding body 7, it is guided into a front windshield G. The light guided into the front windshield G is received by a light receiving element 5 after repeated total internal reflections within the front windshield G. In this instance, when raindrops adhere on the outside surface of the front windshield G and the adhering points are at the total internal reflection points of the light mentioned above, then the light beam guided into the front windshield G passes through and goes out from the windshield G without undergoing total internal reflection therein. As the result of this, the amount of the light beam received by the light receiving element decreases, thereby enabling detection of adhesion of raindrops based thereon, so as to output a signal for driving a wiper equipment or the like.