摘要:
A processing apparatus including an internal circuit having a CPU and internal devices and an external circuit including external devices provided externally of the internal circuit, and the like, and is aimed to prevent illicit access and reverse engineering. The internal circuit including a CPU, internal devices and a bus line connecting the CPU to the internal devices and extending externally, and the external circuit including external devices provided externally of an externally extending portion of the bus line. The internal circuit further including a ciphering section 120 provided at an entrance to an external side and ciphering addresses and data on the bus line by ciphering patterns according to a plurality of regions divided from an address space allotted to the entire external devices.
摘要:
A fuel injection device for supplying high-pressure fuel to an internal combustion engine includes a fuel supply pump, a first common rail and a second common rail. High-pressure fuel is directly supplied to the first common rail and then to the second common rail from the first common rail through a connecting passage having an orifice. The high-pressure fuel accumulated in the common rails is supplied to injectors and is injected into cylinders in a controlled manner. To suppress pressure wave propagation from the first common rail to the second common rail while providing an appropriate flow passage size, a passage diameter of the orifice is set to 0.9 mm–1.3 mm. In this manner, a pressure difference between the first common rail and the second common rail is minimized.
摘要:
An RFID transceiver device is capable of high sensitivity reception, by the reduction of noise, irrespective of the distance to the tag. The RFID transceiver device includes a delay circuit between a local oscillation circuit and a demodulation circuit, wherein the amount of delay of the delay circuit is set to a magnitude corresponding to the path difference between the path of leakage, via a duplexer into the demodulation circuit, of transmission signal output from the local oscillation circuit for transmission, and the path of direct input of the local oscillation signal from the local oscillation circuit to the demodulation circuit.
摘要:
An access violation of the program is monitored by the access monitor which is a hardware. The access monitor acquires a signal input from the CPU to a memory. The access monitor includes an access permission table as information of the memory region to be permitted to each program, and detects the access violation of the signal from the CPU by referring thereto. In this manner, the unjust access is monitored by the hardware, thereby preventing the unjust access by rewriting in software.
摘要:
A proximity IC card (PICC) which relates to and provides a carrier synchronization type demodulator, which is able to stably receive a PSK signal from a PICC and is enhanced in noise immunity, and which is realized at a low cost and in such a way as to have a small size. The carrier synchronization type demodulator is adapted to receive and demodulate PSK-modulated subcarrier signals to be synchronized with and superposed onto a sent carrier signal. This demodulator includes a carrier detecting device for detecting the subcarrier signals successively received in a predetermined time, a phase-change-point detecting device for detecting a phase change point of the subcarrier signal after the subcarrier signal is detected, and a data reception control device for controlling the reception of data of a predetermined format by employing a moment, at which the phase change point is detected, as a synchronization start point for receiving data, and by using an internal clock that is synchronized with the sent carrier signal by using the moment as a starting point of synchronization.
摘要:
A numerical data processing apparatus has: at least three loading apertures onto each of which a storage medium is loaded, said storage medium storing numerical data standing for a numerical value to be converted into an amount of money and having an equivalent value to a value of currency of the amount of money corresponding; a transfer path network connected to all of said at least three loading apertures for transferring the numerical data among the storage media loaded onto said at least three loading apertures; and a transfer control unit for providing such a control that a transfer source and a transfer destination of a data transfer by said transfer path network are identified, an amount of money is obtained in accordance with an operation, and numerical data of the obtained amount of money corresponding is transferred from the transfer source to the transfer destination.
摘要:
A circuit, of a simple structure, for detecting the presence or absence of a proximity IC card (PICC) in a proximity coupling device (PCD) which transmits data to and receives data from the PICC. This circuit includes an antenna for receiving a carrier signal outputted to a proximity IC card, a D.C. detecting device for rectifying a carrier signal received from the antenna and for detecting a D.C. component of the received carrier signal, and a level judgment device for determining the level of the D.C. component detected by the D.C. detecting device and for judging, when the level of the direct component is within a predetermined range that a proximity IC card is present in an RF field.
摘要:
An RFID transceiver device is capable of high sensitivity reception, by the reduction of noise, irrespective of the distance to the tag. The RFID transceiver device includes a delay circuit between a local oscillation circuit and a demodulation circuit, wherein the amount of delay of the delay circuit is set to a magnitude corresponding to the path difference between the path of leakage, via a duplexer into the demodulation circuit, of transmission signal output from the local oscillation circuit for transmission, and the path of direct input of the local oscillation signal from the local oscillation circuit to the demodulation circuit.
摘要:
Authentication circuits are provided between a debug I/F circuit and a debug terminal. The authentication circuit transmits a transmission key externally at the time of activation, and authenticates based on a reception signal and the transmission key, and enables access to the debug I/F. Thus, it is possible to prevent a spurious access from the debug I/F by a third person by the authentication circuit.
摘要:
A protocol control integrated circuit configured by integrating, on one chip, hardware and control programs necessary for conducting data interchange through communications with portable type mediums, and used in common among various types of apparatus. Thus, the integrated circuit is constructed by integrating, on one chip, a storage section for storing a control program prepared for protocols for a plurality of digital money different in mode from each other, a processing section for controlling the handling of the plurality of digital money, different in mode, by running the control program stored in the storage section, and an interface circuit connected to an external circuit including at least one of an external processing section and an external storage section for fulfilling an interface function between the external circuit and the processing section. Further this invention is applicable to various types of transaction apparatus capable of handling, for example, digital money and credit transactions.