摘要:
A power conversion device including a solar panel, a first DC/DC conversion circuit, a DC/AC conversion circuit connected via a DC bus, a second DC/DC conversion circuit for controlling bus voltage in the case of power outage, a first control section having two kinds of control modes and controlling the first DC/DC conversion circuit, a second control section for controlling the second DC/DC conversion circuit, and a third control section for controlling the DC/AC conversion circuit. The second control section controls bus voltage in the case of power outage, and the first control section switches the control mode based on information of the second control section.
摘要:
Provided are a solar panel (1), a first DC/DC conversion circuit (13), a DC/AC conversion circuit (21) connected via a DC bus (25), a second DC/DC conversion circuit (17) for controlling bus voltage in the case of power outage, a first control section (14) having two kinds of control modes and controlling the first DC/DC conversion circuit (13), a second control section (18) for controlling the second DC/DC conversion circuit (17), and a third control section (22) for controlling the DC/AC conversion circuit (21). The second control section (18) controls bus voltage in the case of power outage, and the first control section (14) switches the control mode based on information of the second control section (18).
摘要:
A management unit (110) which issues a digital certificate to a new transmission unit (410) includes a wireless communication section for performing communication in a network (300) and a wire communication section to which the new transmission unit (410) can be connected; when the new transmission unit (410) is wire-connected to the management unit (110), it is judged in accordance with the received device type information of the new transmission unit (410), whether or not the new transmission unit (410) is a device having a communication means that can communicate in the network (300); and if the new transmission unit is judged as a device having that type of means, the management unit creates a digital certificate by using a device identifier specific to the new transmission unit (410), and sends the digital certificate to the new transmission unit (410).
摘要:
A signal which is to be used in high-speed playback is recorded in a predetermined region of a track. An error correcting check code region for recording an error correcting check code is formed at a position adjacent to the predetermined region. In accordance with the usage, an error correcting check code for high-speed playback, an error correcting check code for normal playback, or predetermined fixed data is recorded in the error correcting check code region. In a digital VTR which records and plays back data at plural kinds of data rates, trick playback data are recorded so that a head scans a subcode area or a VAUX area in high-speed playback at a predetermined tape running speed in each record mode. An area for recording an error correcting check code is used as an area for, in addition to an error correcting check code for normal playback, recording an error correcting check code for trick playback, normal playback data, or trick playback data.
摘要:
A magnetic type recording and reproducing apparatus comprises means for extracting by a first head and a second head a plurality of pilot signal components and means for finding an error for control of tracking with using a proper pilot signal component in accordance with a data rate of signals. The magnetic type recording and reproducing apparatus controls a recording tape speed in accordance with the data rate of signals, controls a playback tape speed in accordance with a high playback speed and the data rate, and arranges high speed playback data in areas which are to be traced by both heads during a playback with a plurality of data rates.
摘要:
To reduce the undetected errors without degradation of the burst error correction capability, in error correction decoding of the digital signal with three-dimensional error correction codes appended thereto. For correcting errors by applying error correction codes in three directions of a recording direction, perpendicular direction, and direction of tracks, whether a burst error has occurred is checked, and an error-correction decoding algorithm is switched between one used when a burst error has occurred, and one used when no burst error has occurred.
摘要:
Data separating means extracts intra-frame or intra-field encoded blocks from an intra-frame or intra-field encoded, and inter-frame or inter-field encoded digital video signal, and a digital audio signal contained in an input bit stream. Error correction code appending means appends error correction codes to the extracted intra-encoded blocks. Recording means records the data having the error correction code appended, in special replay data recording areas predefined on the magnetic recording tape. During fast replay or slow replay, error correction is achieved even for the replay signal with a low output level and a poor symbol rate.
摘要:
In an error-correcting apparatus for correcting errors included in reproduced data which are stored in a RAM, a syndrome generation circuit, a polynomial calculation circuit for calculating an error position polynomial and an error value polynomial, and a position calculation circuit for calculating an error position are operated in parallel. A divider section of the error-correcting apparatus has a divider for performing the division of highest-degree coefficients of two polynomials, a multiplier for multiplying the coefficient of the polynomial set in the divisor side of the divider by the output of the divider, and an adder for adding the output of the multiplier and the coefficient of the polynomial set in the dividend side of the divider. The divider section executes the division over a Galois field while sequentially shifting the contents of registers which store the coefficient data of the dividend polynomial.
摘要:
In a magnetic recording/playback apparatus for recording and playing back a digital video signal on a helical track of a magnetic tape using two or more rotary heads, the playback image at the time of high-speed playback is improved by setting the tape travel speed at the time of high-speed playback at an even multiple of a normal playback speed. Further a tracking phase is offset by one half the track pitch with respect to the tracking during normal speed playback. Alternatively, essential information of the information having been high-efficiency coded is recorded in the central part, and near the ends of the tracks, while high-precision information is recorded in intermediate parts intermediate between the central part and the parts near the ends. Still alternatively, the video data of one of the consecutive fields is recorded in the central part of the tracks and the video data of the other of the consecutive fields is recorded near the ends of the tracks.
摘要:
The present invention relates to a new and distinct horticultural variety of shiitake mushroom, Lentinus edodes (Berk.) Sing. This new variety, named "Hokken 601", was discovered by crossbreeding. It is adaptable to short term cultivation in sawdust beds and is characterized by rapid growth in these beds. "Hokken 601" offers superior yields and firmer flesh than other varieties of shiitake.