摘要:
In one embodiment, a human body communication apparatus includes a first human body communication terminal carried by a person, a second human body communication terminal and an authentication unit included in the first or second human body communication terminal. The first human body communication terminal includes a first detection unit to detect first living body physiological information of the carrying person. The second human body communication terminal includes a human body contact sensor and a second detection unit to detect second living body physiological information of the person who touches the human body contact sensor. The authentication unit acquires the first and second living body physiological information and determines a correlation between the first and second living body physiological information to permit communication between the first and second human body communication terminals in accordance with the correlation.
摘要:
In one embodiment, a human body communication apparatus includes a first human body communication terminal carried by a person, a second human body communication terminal and an authentication unit included in the first or second human body communication terminal. The first human body communication terminal includes a first detection unit to detect first living body physiological information of the carrying person. The second human body communication terminal includes a human body contact sensor and a second detection unit to detect second living body physiological information of the person who touches the human body contact sensor. The authentication unit acquires the first and second living body physiological information and determines a correlation between the first and second living body physiological information to permit communication between the first and second human body communication terminals in accordance with the correlation.
摘要:
A system for receiving an OFDM signal. An AD converter samples a received signal at a first sampling rate. A low pass filter removes noise from a signal outputted from the AD converter. A rate converter extracts data from a signal outputted from the low pass filter at a second sampling rate. An OFDM signal decoding circuit converts and decodes a signal outputted from the rate converter from a time domain to a frequency domain. An error correction circuit corrects errors of a signal outputted from the OFDM signal decoding circuit. The low pass filter varies its frequency characteristic in response to said first sampling rate.
摘要:
In respective leaf tables (LT(1) to LT(m)) of a coupling management table (20), there are provided delete operation identifiers (D(1) to D(m)) indicating that leaf queues (LQ) respectively next to them toward the upstream direction are under delete operation. When one of the leaf queues (LQ(n)) should be deleted, if the leaf queue (LQ(n)) to be deleted stores any element, the delete operation identifier (D(n+1)) is set to 1. Thereby, the leaf table (LT(n−1)) can acknowledge that the leaf queue (LQ(n)) is currently under delete operation. Therefore, the coupled packet queue after deletion of the leaf queue and the coupling management table can be maintained consistent.
摘要:
An input cell processing portion 11 and an output cell processing portion 12 in a line interface 10 execute a normal ATM process and an insertion/divergence process etc with respect to an input cell flow and an output cell flow. A cell buffer 40 is constructed on an external memory device to accumulate a template (format) of ATM cells to be processed. The input cell processing portion 11 or the output cell processing unit 12 in the line interface 10 judges whether a necessity for inserting the network management cell might arise or not when processing the input cell flow. Upon detecting herein that the insertion necessity arises, the management cell template previously held on the cell buffer 40 is read, and, after a necessary data replacing process has been executed thereon, the management cell is inserted into the input cell flow or the output cell flow.
摘要:
A storage means control apparatus of this invention includes a first processing unit for performing write processing in a first storage unit, a second processing unit for performing write processing in a second storage unit, a tag data control unit for managing tag data representing storage areas where the first processing unit has performed write processing in the first storage unit (101), another tag data control unit for managing another tag data representing storage areas where the second processing unit has performed write processing in the second storage unit, a priority data control unit for managing priority data representing a priority of each of the first and second processing units in units of storage areas of the second storage unit, a prevention data control unit for managing prevention data for preventing write processing in each storage area of the second storage unit using the priority data and the tag data, and a processing data updating unit for writing the data written in the first storage unit (101) in the second storage unit on the basis of the prevention data. With this arrangement, when each write control unit in a plurality of processing units performs write processing in the storage unit of the self processing unit, matching of stored contents among the units can be ensured.
摘要:
A storage means control apparatus of this invention includes a first processing unit for performing write processing in a first storage unit, a second processing unit for performing write processing in a second storage unit, a revealing data control unit for managing revealing data representing storage areas where the first processing unit has performed write processing in the first storage unit (101), another revealing data control unit for managing another revealing data representing storage areas where the second processing unit has performed write processing in the second storage unit, a priority data control unit for managing priority data representing a priority of each of the first and second processing units in units of storage areas of the second storage unit, a inhibition data control unit for managing inhibition data for inhibiting write processing in each storage area of the second storage unit using the priority data and the revealing data, and a processing data reflection unit for writing the data written in the first storage unit (101) in the second storage unit on the basis of the inhibition data. With this arrangement, when each write control unit in a plurality of processing units performs write processing in the storage unit of the self processing unit, matching of stored contents among the units can be ensured.
摘要:
A communication control device has a physical interface for physical interfacing with a network, a processor for processing high rank communication protocol of a frame from the network, a receiving controller for processing low rank communication protocol of the frame, and a communication buffer for storing the frame in a sequence order received. In the device, at least one of the receiving controller has a controller setting each of the receiving controller into one of a communication processing state, a communication standby state, and a halt state, setting one of the receiving controller under the halt state into the communication standby state, and selecting a data structure and giving the selected data structure to the receiving controller under the communication standby state to process the following frame transferred from the network. The receiving controller under the communication standby state transits into the communication processing state in order to receive the frame and transits into the halt state after receiving completion.
摘要:
A phase-locked loop circuit, which is used in order to extract a clock signal out of a received signal obtained from a token ring network or various LANs, has a phase comparator, a charge pump, and a voltage controlled oscillator. Said phase comparator has a window signal generating means, an edge extracting means, and a control means. This edge extracting means finds the edge existence in a received signal during the open period of said window signal. Therefore, if the center edge of the signal has a phase jitter within the open period, the extracting means can find the center edge. When the extracting means finds no edge, said control means shifts the window position by a certain bit time, so as to restart the new extracting of center edge. Thus, this circuit can recover to the synchronous state without causing a bit slip even when a center edge is lost.
摘要:
A semiconductor device capable of communicating with a host apparatus includes a symbol generation unit, a coding unit, and a transmission unit. The symbol generation unit includes a random number generation circuit and generates a symbol according to a random number generated by the random number generation circuit. The coding unit performs 8b/10b coding for the symbol. The transmission unit transmits the symbol coded by the 8b/10b coding unit to the host apparatus.