Abstract:
A bus monitor circuit includes an access info information/write data FIFO and a read data FIFO to produce a bus monitor output signal on a bus transmitting data between a master and a slave. In a write access ascribed to an attribute of the access information stored at a header of the access information/write data FIFO, the bus monitor circuit directly outputs a bus monitor output signal indicating the access information accompanied with the corresponding write data which is transmitted in the same cycle. In a read access ascribed to an attribute of the access information, the bus monitor circuit waits for the read data FIFO storing the corresponding read data, and then outputs a bus monitor output signal indicating the access information paired with the read data in the same cycle. This guarantees the occurrence order of bus access according to a bus interface protocol enabling pipeline transmission.
Abstract:
A printing apparatus includes: a upstream roller pair arranged on the upstream side of a printing head with respect to a direction in which a sheet is conveyed; and a downstream roller pair arranged on the downstream side of the printing head with respect to the direction, wherein each of the upstream roller pair and the downstream roller pair includes a first roller and a second roller configured to hold the sheet therebetween. In both of the upstream roller pair and the downstream roller pair, a rotation shaft of the second roller is provided to be situated on the downstream side of a rotation shaft of the first roller with respect to the direction.
Abstract:
An apparatus includes an adjusting mechanism configured to change a gap between a print head and a continuous sheet, and the adjusting mechanism controls the gap to be larger than that at the time of printing when a splice of the continuous sheet passes the print head. An unprintable area is set on each of the upstream side and the downstream side of the splice, each having at least a width corresponding to a sum of a length of the plurality of print heads in the direction of sheet conveyance and a distance of movement of the continuous sheet in a period required for the adjusting mechanism to change the gap, and the printing is continued while avoiding the unprintable area.
Abstract:
An encoding/decoding processor includes a coprocessor that is dedicated to encoding and decoding processes, where the coprocessor comprises: a parameter register that stores externally given operation modes and the settings of generation polynomials; and a calculation circuit that operates on the basis of the operation modes and the generation polynomials and that performs calculations, which are required for the encoding and decoding processes, by a plurality of bits per cycle in a parallel manner, and the coprocessor further comprises memory controllers, which include: address generator circuits for outputting the addresses of the storage devices; FIFO circuits for temporarily storing data; and data packing circuits for making up predetermined numbers of bits of data for output.
Abstract:
A printing apparatus includes: a upstream roller pair arranged on the upstream side of a printing head with respect to a direction in which a sheet is conveyed; and a downstream roller pair arranged on the downstream side of the printing head with respect to the direction, wherein each of the upstream roller pair and the downstream roller pair includes a first roller and a second roller configured to hold the sheet therebetween. In both of the upstream roller pair and the downstream roller pair, a rotation shaft of the second roller is provided to be situated on the downstream side of a rotation shaft of the first roller with respect to the direction.
Abstract:
In a synchronization processing circuit in a wireless communication system, a correlation operation unit is designed to have a parallel structure which can be restructured to improve flexibility in order to cope with various synchronization processings in a plurality of radio systems.The synchronization processing circuit in the wireless communication system comprises a plurality of correlation operation modules 31 through 3N that execute correlation operation, each of which correlation operation modules includes a plurality of correlators 60, a plurality of shift registers 50 for shifting a correlation code, an interface which transfers a shifted correlation code to an adjacent correlation operation unit for timing correlation processing, and a correlation code selection unit 40 which selects an externally and individually applied correlation code for code correlation processing and a correlation code transferred from an adjacent correlation operation unit as the correlation code.
Abstract:
A both-side recording apparatus that enables both-side recording on continuous paper using a single recording head, without cutting the continuous paper at an intermediate position, is provided. Reduction in size and costs of the apparatus is achieved by eliminating a conveying path dedicated to both-side recording. The apparatus includes a paper-feeder that feeds continuous paper, a recording head that records an image on the continuous paper, a reversing unit that reverses the continuous paper such that a recording surface of the continuous paper facing the recording head is reversed, and a rewinding mechanism that rewinds the fed continuous paper to the paper-feeder. During both-side recording, recording is performed on the back side of the continuous paper by rewinding the continuous paper by the rewinding mechanism, setting the back side of the continuous paper to oppose the recording head by the reversing unit, and feeding the continuous paper from the paper-feeder.
Abstract:
It is possible to improve a radio communication digital baseband processing device including data encryption/decryption so as to prevent processing failure caused by a data rate increase in recent years by increasing the MAC processing speed of data encryption/decryption and realizing the load distribution in a processing device. A data processing device which performs a communication process including data encryption/decryption includes: a control processor which performs calculation of the MAC processing parameter; and MAC processing means which performs MAC data processing including data encryption/decryption. The control processor controls the MAC processing means by a command script continuously describing a combination of a command and parameter accompanying it.
Abstract:
In order to enable to quickly and efficiently execute, by one system, various modulation/demodulation/synchronous processes in a plurality of radio communication methods, a co-processor (22) for complex arithmetic processing, which forms a processor system (100), includes a complex arithmetic circuit (22) that executes for complex data a complex arithmetic operation required for radio communication in accordance with an instruction from a primary processor (10), and a memory controller (20, 21) that operates in parallel with the complex arithmetic circuit and accesses a memory. A trace circuit provided in the complex arithmetic circuit (22) monitors arithmetic result data for first complex data series sequentially read from the memory, and detects a normalization coefficient for normalizing the arithmetic result data.
Abstract:
A recording apparatus includes a recording head, a roller configured to convey a recording medium, an acquisition unit configured to acquire information about a conveyance amount for conveying the recording medium per a predetermined rotation amount of the roller, a recording timing generation unit configured to generate a plurality of timing signals for performing recording for one raster line according to a rotation of the roller during one rotation thereof, and a drive signal generation unit configured to generate a drive reference signal for performing the recording for the one raster line on the recording medium at a predetermined interval based on the conveyance amount information and the timing signal.