发明名称 Controlled access programmable event timer system
摘要 A control system is disclosed which can be attached to equipment such as appliances or automobiles, or built in as a part thereof. The control system includes an enabling/disabling device such as a relay in a circuit in the equipment. A time setting device is used to program a microprocessor with the times when the relay will open and close-thereby disabling and enabling the equipment. The time setting device can only be used to set the times by a person having an authentic authorization device such as a card or a key. The card is read by a card reader and the information obtained is compared by the microprocessor with the authentic information. In the case where a key is the authorization device, it is used to close a circuit to the microprocessor. A liquid crystal display is provided to display time information, and a rechargeable battery is included to prevent changing the time by unplugging the equipment.
申请公布号 US4769765(A) 申请公布日期 1988.09.06
申请号 US19860928781 申请日期 1986.11.10
申请人 GREEN, DAVID L. 发明人 GREEN, DAVID L.
分类号 G04G15/00;G07C9/00;G07F7/00;(IPC1-7):G06F15/20;G04B47/00 主分类号 G04G15/00
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