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    • 52. 发明授权
    • Bipolar random access memory
    • 双极随机存取存储器
    • US5083292A
    • 1992-01-21
    • US490920
    • 1990-03-09
    • Katsuyuki YamadaTeruaki MaedaYoshichika Nakaya
    • Katsuyuki YamadaTeruaki MaedaYoshichika Nakaya
    • G11C11/414G11C11/411G11C11/416
    • G11C11/416G11C11/4116
    • A bipolar random access memory comprises a plurality of memory cells arranged in row and column formation, a plurality of word lines provided in correspondence to respective rows of the memory cells, a plurality of bit lines provided in correspondence to respective columns of the memory cells, a row addressing part connected to each of the plurality of word lines, a column addressing part connected to each pair of the adjacent bit lines, a read/write controller supplied with a cell information to be written into an addressed memory cell and further with a read/write control signal indicating whether the random access memory is to be operated in a reading mode or in a writing mode and acting as a current source in the reading and writing modes, a first current control part provided in each column of the memory cells so as to be connected to one of the bit lines in a column selected by the column addressing part at the first side of each of the memory cells, a second current control part provided in each column of the memory cells so as to be connected to the other of the bit lines in the selected colunmn, and a third current control part connected to the first and second current control parts for controlling the first and second current control parts such that the write current in the bit lines connected to the side each of the memory cells to which an information is to be written is increased and such that the write current in the bit lines connected to the side of each of the memory cell to which the information is not written is decreased in the writing mode.
    • 57. 发明申请
    • Phase-change optical recording medium, optical recording method, and optical recording apparatus
    • 相变光记录介质,光记录方法和光记录装置
    • US20060187789A1
    • 2006-08-24
    • US11353000
    • 2006-02-14
    • Hajime YuzuriharaHiroshi DeguchiKatsuyuki YamadaShinya NarumiMikiko AbeEiko HibinoHiroshi Miura
    • Hajime YuzuriharaHiroshi DeguchiKatsuyuki YamadaShinya NarumiMikiko AbeEiko HibinoHiroshi Miura
    • G11B5/09G11B7/00
    • G11B7/0062G11B7/243G11B2007/24308G11B2007/2431G11B2007/24312G11B2007/24314G11B2007/24316
    • The object is to provide an optical recording method improving the recording characteristics and uniformity in a CAV recording on a phase-change optical recording medium, particularly a high-speed rewritable DVD medium, and a phase-change optical recording medium and an optical recording apparatus used by the method. Regarding a recording method for recording on the phase-change optical recording medium where a recording light comprises a pulse string of heating and cooling pulses, and a light for erasing, an irradiation power is controlled by peak power (Pp), bottom power (Pb) and erase power (Pe), at least any one of Pe/Pp, Pp, Pb and Pe is variable from the minimum to maximum recording linear velocities allowed for the medium, and further the irradiation time of each pulse is varied proportionally with clock T corresponding to a recording linear velocity, the present invention provides an optical recording method which performs a recording by varying at least Pe/Pp from a specific recording linear velocity lower than a peculiar recording linear velocity at which the recording linear velocity degrades abruptly showing a local maximum value, and an optical recording medium and an optical recording apparatus used by the method.
    • 本发明的目的是提供一种改善相变光学记录介质,特别是高速可重写DVD介质上的CAV记录的记录特性和均匀性的光记录方法,以及相变光记录介质和光记录装置 由方法使用。 关于在相变光记录介质上进行记录的方法,其中记录光包括加热和冷却脉冲的脉冲串和用于擦除的光,照射功率由峰值功率(Pp),底部功率(Pb) )和擦除功率(Pe),Pe / Pp,Pp,Pb和Pe中的至少任一个可以从介质允许的最小到最大记录线速度变化,并且每个脉冲的照射时间与时钟成比例地变化 T相当于记录线速度,本发明提供了一种光记录方法,该方法通过从特定记录线速度改变至少Pe / Pp来执行记录,该特定记录线速度低于记录线速度突然显示为 局部最大值,以及通过该方法使用的光学记录介质和光学记录装置。