发明授权
- 专利标题: Child proximity detector
- 专利标题(中): 儿童接近检测器
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申请号: US429142申请日: 1995-04-26
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公开(公告)号: US5646593A公开(公告)日: 1997-07-08
- 发明人: Michael Hughes , Ian Clarke , William E. Hewlett
- 申请人: Michael Hughes , Ian Clarke , William E. Hewlett
- 申请人地址: CA Pasadena
- 专利权人: Hewlett Electronics
- 当前专利权人: Hewlett Electronics
- 当前专利权人地址: CA Pasadena
- 主分类号: G08B21/02
- IPC分类号: G08B21/02 ; G08B23/00
摘要:
A child proximity detection unit includes two transceivers which communicate messages with one another. Only a properly authorized parent can attend a message to the child unit. However, a properly authorized parent can authorize another parent to adopt a child unit.
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