摘要:
The present invention provides a semiconductor device capable of changing the setting of the internal operation mode without increasing the number of terminals of the semiconductor device. The semiconductor device includes a transmitting cell, a receiving cell, a semiconductor chip including a transmitting antenna and a receiving antenna, and a conductor. The transmitting antenna is connected to the transmitting cell, and the receiving antenna is connected to the receiving cell. The conductor is provided close to the transmitting antenna and the receiving antenna. Close proximity wireless communication is used between the transmitting cell and the receiving cell.
摘要:
The present invention provides a semiconductor device capable of changing the setting of the internal operation mode without increasing the number of terminals of the semiconductor device. The semiconductor device 100a includes a transmitting cell, a receiving cell, a semiconductor chip 120 including a transmitting antenna 121a and a receiving antenna 122a, and a conductor 111a. The transmitting antenna 121a is connected to the transmitting cell, and the receiving antenna 122a is connected to the receiving cell. The conductor 111a is provided close to the transmitting antenna 121a and the receiving antenna 122a. Close proximity wireless communication is used between the transmitting cell and the receiving cell.
摘要:
One array antenna including three induction coils is formed on an application integrated circuit of a fixed housing. Eight array antennas, each of which is arranged in a manner similar to that of the array antennas of the application integrated circuit, are formed at intervals of 45 degrees around a rotation axis on an imaging process integrated circuit of a movable housing. A controller selects one of the eight array antennas of the imaging process integrated circuit so that a magnitude of a difference between a rotation angle of a movable housing and a rotation angle of the movable housing becomes equal to or smaller than 22.5 degrees based on the rotation angle of the movable housing, and controls a stepping motor so that a selected array antenna opposes to the array antenna on the application integrated circuit.
摘要:
One array antenna including three induction coils is formed on an application integrated circuit of a fixed housing. Eight array antennas, each of which is arranged in a manner similar to that of the array antennas of the application integrated circuit, are formed at intervals of 45 degrees around a rotation axis on an imaging process integrated circuit of a movable housing. A controller selects one of the eight array antennas of the imaging process integrated circuit so that a magnitude of a difference between a rotation angle of a movable housing and a rotation angle of the movable housing becomes equal to or smaller than 22.5 degrees based on the rotation angle of the movable housing, and controls a stepping motor so that a selected array antenna opposes to the array antenna on the application integrated circuit.
摘要:
In an external medium communication system including a non-contact card 300, which is an external medium, and a card communication device 400, which is a communication device, the non-contact card 300 includes a conductive unit 320, and the card communication device 400 includes a detection antenna unit 420 including a detection output antenna 421 and a detection input antenna 422. When the external medium 300 is mounted in a predetermined position, the card communication device 400 detects that the non-contact card 300 is in the predetermined position by detecting that the detection output antenna 421 and the detection input antenna 422 are coupled by electromagnetic induction across the conducting unit 320.
摘要:
In an external medium communication system including a non-contact card 300, which is an external medium, and a card communication device 400, which is a communication device, the non-contact card 300 includes a conductive unit 320, and the card communication device 400 includes a detection antenna unit 420 including a detection output antenna 421 and a detection input antenna 422. When the external medium 300 is mounted in a predetermined position, the card communication device 400 detects that the non-contact card 300 is in the predetermined position by detecting that the detection output antenna 421 and the detection input antenna 422 are coupled by electromagnetic induction across the conducting unit 320.
摘要:
Provided is an electronic circuit system that reduces at least one of a constraint on a positional relation between two electronic circuit devices and a constraint on the number and an arrangement of coils included in each device, when close-coupled wireless communication is established. In the electronic circuit system, wireless communication utilizing inductive coupling between antennas is established between first and second electronic circuit devices. The second electronic circuit device includes an electronic circuit, a plurality of antennas, a connection information generation unit and a connection switching unit. The connection information generation unit selects one of the plurality of antennas to be paired with an antenna included in the first electronic circuit device for use in wireless communication, and the connection switching unit switches one or more of the plurality of antennas to be connected to the electronic circuit.
摘要:
Provided is an electronic circuit system that reduces at least one of a constraint on a positional relation between two electronic circuit devices and a constraint on the number and an arrangement of coils included in each device, when close-coupled wireless communication is established. In the electronic circuit system, wireless communication utilizing inductive coupling between antennas is established between first and second electronic circuit devices. The second electronic circuit device includes an electronic circuit, a plurality of antennas, a connection information generation unit and a connection switching unit. The connection information generation unit selects one of the plurality of antennas to be paired with an antenna included in the first electronic circuit device for use in wireless communication, and the connection switching unit switches one or more of the plurality of antennas to be connected to the electronic circuit.
摘要:
A detection signal transmitting unit 123 of a first component 110 transmits a plurality of detection signals having different frequency spectrums to a second component 210. Upon receiving the detection signals, a detection signal returning unit 233 of the second component 210 returns, as return signals, respective signal waveforms of the received detection signals to the first component 110. A detection signal judging unit 126 of the first component 110 judges authenticity of the received return signals based on the transmitted detection signals. When the judging unit judges that the received return signals are not authentic, a tamper-resistance control unit 127 adds a restriction to the communication performed between the first component 110 and the second component 210.
摘要:
Provided is a delay adjustment device for adjusting delay of a strobe signal, which specifies when to read a data signal on a data line, with respect to the data signal in order to perform data transfer with an external memory. A testing unit 150 included in a delay adjustment unit is provided with a memory bandwidth monitoring unit 212 that monitors memory bandwidth in use on the data line used for data transfer with a memory circuit. The testing unit 150 performs delay adjustment when the memory bandwidth in use is lower than a predetermined threshold. Delay adjustment is performed by delaying the strobe signal from the data signal by a variety of predetermined delays and determining whether data transfer is successful at each delay, calculating an optimal delay, and thereafter delaying the strobe signal by the calculated delay.