Number | Date | Country | Kind |
---|---|---|---|
57-120329 | Jul 1982 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3015690 | Mason et al. | Jan 1962 | |
4305093 | Nasu | Dec 1981 | |
4305094 | Yamada | Dec 1981 | |
4315280 | Tsuda | Feb 1982 | |
4472736 | Ushio | Sep 1984 |
Entry |
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Newman, William M., "Principles of Interactive Computer Graphics", Second Edition, 1979, pp. 367-370, 386, 387, 388. |