Abstract: Configuration, in which images output to a display unit are switched and displayed in accordance with the behavior of a driver, such as movements of the head of the driver, is achieved. Driver information indicating the behavior of the driver of a moving apparatus and images captured by a plurality of cameras that images a situation around the moving apparatus from different viewpoints are input. The images output to the display unit are switched in accordance with the driver information. The plurality of cameras is, for example, a plurality of rear cameras installed in the rear of the moving apparatus. For example, a direction of the face or line-of-sight of the driver is detected. An image in a direction corresponding to the detected direction of the face or line-of-sight of the driver is selected as an output image, and displayed on the display unit. Alternatively, an image in a direction indicated by a gesture of the driver is selected, and displayed on the display unit.

Abstract: It is desired to be able to easily identify a cause of a communication abnormality in an industrial machine. A controller of an industrial machine which communicates with an external device through a network includes: a plurality of communication units which respectively correspond to a plurality of communication protocols; and a diagnosis unit which starts up the communication units in a predetermined order and attempts communication using the communication protocols corresponding to each communication unit that is started up so as to diagnose the conditions of communication step by step.

Abstract: It is desired to be able to easily identify a cause of a communication abnormality in an industrial machine. A controller of an industrial machine which communicates with an external device through a network includes: a plurality of communication units which respectively correspond to a plurality of communication protocols; and a diagnosis unit which starts up the communication units in a predetermined order and attempts communication using the communication protocols corresponding to each communication unit that is started up so as to diagnose the conditions of communication step by step.

Abstract: A communication system includes a first communication device and a second communication device for performing power line communication using a power line as a transmission line with the first communication device, and in the communication system, the first communication device includes a detection mechanism for detecting a zero crossing timing of a commercial power supply and transmitting mechanism for transmitting a transmission signal modulated in OFDM mode at the zero crossing timing, the transmitting mechanism first transmits a header signal having a preamble as the transmission signal when the power line communication is started, and the transmitting mechanism transmits a data signal having no preamble as the transmission signal after the header signal is transmitted, and the second communication device includes a receiving mechanism for performing a demodulation process on the transmission signal which is received, to thereby obtain receiving data.

Abstract: A communication system includes a first communication device and a second communication device that performs power line communication with the first communication device via an electric power line, wherein the first communication device transmits an initial packet signal added with an error detection code in each zero crossing period including zero crossing timing while changing transmission timing within the zero crossing period. The second communication device specifies optimum communication timing out of a plurality of pieces of transmission timing within the zero crossing periods based on a result of error detection on each initial packet signal, and transmits an ACK signal including timing information on the optimum communication timing. Then, the first communication device transmits a data packet signal in the optimum communication timing within the zero crossing period, which is specified based on the timing information.

Abstract: A communication system according to the present invention comprises a first communication device and a second communication device for performing power line communication using a power line as a transmission line with the first communication device, and in the communication system, the first communication device has a detection means for detecting a zero crossing timing of a commercial power supply and a transmitting means for transmitting a transmission signal modulated in OFDM mode at the zero crossing timing, the transmitting means first transmits a header signal (HS) having a preamble as the transmission signal when the power line communication is started, and the transmitting means transmits a data signal (DS) having no preamble as the transmission signal after the header signal (HS) is transmitted, and the second communication device has a receiving means for performing a demodulation process on the transmission signal which is received, to thereby obtain receive data.

Abstract: A communication system includes a first communication device and a second communication device that performs power line communication with the first communication device via an electric power line, wherein the first communication device transmits an initial packet signal added with an error detection code in each zero crossing period including zero crossing timing while changing transmission timing within the zero crossing period. The second communication device specifies optimum communication timing out of a plurality of pieces of transmission timing within the zero crossing periods based on a result of error detection on each initial packet signal, and transmits an ACK signal including timing information on the optimum communication timing. Then, the first communication device transmits a data packet signal in the optimum communication timing within the zero crossing period, which is specified based on the timing information.

Abstract: A separation signal generation unit generates a plurality of separation signals which are independent from one another from the mixed signals for one frame which are converted into those in a frequency region. A mask processing unit judges a noise condition of a first separation signal for each frequency bin on the basis of the first separation signal and second separation signals. The mask processing unit further removes a first noise component obtained on the basis of a judgment result on the noise condition from the first separation signal. A noise amount measuring unit measures the amount of noise in the first separation signal. A noise signal selection unit selects a noise signal for each frequency bin on the basis of the amount of noise measured by the noise amount measuring unit. A noise removing unit removes a second noise component from a noise removal signal inputted from the mask processing unit.

Abstract: A separation signal generation unit generates a plurality of separation signals which are independent from one another from the mixed signals for one frame which are converted into those in a frequency region. A mask processing unit judges a noise condition of a first separation signal for each frequency bin on the basis of the first separation signal and second separation signals. The mask processing unit further removes a first noise component obtained on the basis of a judgment result on the noise condition from the first separation signal. A noise amount measuring unit measures the amount of noise in the first separation signal. A noise signal selection unit selects a noise signal for each frequency bin on the basis of the amount of noise measured by the noise amount measuring unit. A noise removing unit removes a second noise component from a noise removal signal inputted from the mask processing unit.

Abstract: A processor includes a central processing unit (CPU), a local memory and a local memory access device which are coupled to an internal bus, and an input/output (I/O) interface adapted to couple the internal bus to a system bus. The CPU generates a request signal for access to an external device coupled to the system bus and receives an acknowledgment signal for designating grant of usage of the system bus. The CPU releases the internal bus during the period of time from generation of the request signal until reception of the acknowledgment signal. Thus, the local memory access device can access the local memory during the period.

Abstract: A data processing apparatus employing a DMA system has a newly added circuit having a register in addition to the normal combination of a host processor, a memory and a DMA controller. The added circuit is provided between the host processor and the DMA controller. The host processor produces a setting signal by itself for setting a bus request signal into the register of the added circuit. The added circuit applies the bus request signal set in the register to the host processor without an access from the DMA controller. The host processor receives the bus request signal and sends a bus usage grant signal to the added circuit when the host processor does not need to use a bus or after a processing using the bus has been completed, and electrically cuts off itself from the bus. The DMA controller requests a bus usage to the added circuit when a DMA transmission is required.