发明名称 |
FEEDBACK CONTROL CIRCUIT FOR PHOTOSENSORS IN MAGNETIC TAPE DRIVES |
摘要 |
<p>STC-129 A magnetic tape recording and reproducing system in which a light reflective marker is on each reel of tape and has a feedback circuit connected between the light sensor and the source of light for controlling the intensity of the source to maintain the output substantially constant, notwithstanding changes of reflectivity of the tape or gradual changes of efficiency of the source of light. The feedback circuit provides improved detection of the passage of the reflective marker past the sensor.</p> |
申请公布号 |
CA1174761(A) |
申请公布日期 |
1984.09.18 |
申请号 |
CA19820403750 |
申请日期 |
1982.05.26 |
申请人 |
STORAGE TECHNOLOGY CORPORATION |
发明人 |
DUNLAP, ROBERT E. |
分类号 |
G11B15/08;G11B15/58;G11B27/24;(IPC1-7):G11B15/18 |
主分类号 |
G11B15/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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