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    • 1. 发明授权
    • Spiropyran compound
    • 螺吡喃化合物
    • US5708181A
    • 1998-01-13
    • US532802
    • 1995-11-08
    • Hiroshi HamaShinji Nakano
    • Hiroshi HamaShinji Nakano
    • C07D517/10C09K9/02
    • C07D517/10C09K9/02
    • An object of the present invention is to provide a novel compound which is suitably usable as a photochromic material. The compound of the present invention is a salt of a spiropyran compound and an acidic compound, the spiropyran compound being represented by the formula ##STR1## wherein R.sup.1 means a C.sub.1 to C.sub.20 alkyl group, an aralkyl group, a hydroxyethyl group, an acryloxyethyl group or a methacryloxyethyl group, R.sup.2 to R.sup.7 each mean a hydrogen atom, a C.sub.1 to C.sub.6 alkyl group or the like, R.sup.8 means a hydrogen atom, a vinyl group, a group --CH.sub.2 OR.sup.9 or a group --CH.sub.2 OCOC(R.sup.10).dbd.CH.sub.2 (wherein R.sup.9 means a hydrogen atom or a C.sub.1 to C.sub.4 alkyl group and R.sup.10 means a hydrogen atom or a methyl group), and X means an oxygen atom or a sulfur atom.
    • PCT No.PCT / JP95 / 00396 Sec。 371日期:1995年11月8日 102(e)日期1995年11月8日PCT 1995年3月10日PCT PCT。 公开号WO95 / 24409 日期1995年9月14日本发明的目的是提供适合用作光致变色材料的新型化合物。 本发明化合物是螺吡喃化合物和酸性化合物的盐,螺吡喃化合物由下式表示:其中R1表示C1至C20烷基,芳烷基,羟乙基,丙烯酰氧基乙基 或甲基丙烯酰氧基乙基,R2〜R7各自表示氢原子,C1〜C6烷基等,R8表示氢原子,乙烯基,-CH2OR9基或-CH2OCOC(R10)= CH2(其中 R9表示氢原子或C1〜C4烷基,R10表示氢原子或甲基),X表示氧原子或硫原子。
    • 10. 发明授权
    • Error detection and correction circuit
    • 错误检测和纠正电路
    • US07155659B2
    • 2006-12-26
    • US09816644
    • 2001-03-23
    • Hiroshi Hama
    • Hiroshi Hama
    • H03M13/00
    • H04N19/89H03M13/1515H03M13/1535H03M13/1545H03M13/6516H04H20/74
    • A signal separation circuit (11) normally outputs a main signal, but outputs a TMCC signal when an error detection and correction unit (4) sets a completion flag. Main signals are input via a selection circuit (3) to an execution unit (4), where error correction of the main signals is performed. The error-corrected main signals are supplied via a switching circuit (8) to a first data output circuit (9). Meanwhile, TMCC signals are input via the selection circuit (3) to an execution unit (4), error correction is carried out to the TMCC signals. The error-corrected TMCC signals are supplied via switching circuit (8) to a second data output circuit (10).
    • 信号分离电路(11)通常输出主信号,但是当错误检测和校正单元(4)设置完成标志时,输出TMCC信号。 主信号通过选择电路(3)输入到执行单元(4),执行主信号的纠错。 经错误校正的主信号经由开关电路(8)提供给第一数据输出电路(9)。 同时,TMCC信号通过选择电路(3)输入到执行单元(4),对TMCC信号进行纠错。 错误校正的TMCC信号通过开关电路(8)提供给第二数据输出电路(10)。