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Device for monitoring contents/period of displayed advertisement

阅读:581发布:2021-07-12

专利汇可以提供Device for monitoring contents/period of displayed advertisement专利检索,专利查询,专利分析的服务。并且PURPOSE: To attract passenger's interest by displaying a message on a display panel in accordance with speaking time from a public telephone and allowing the displayed message to appear/disappear.
CONSTITUTION: A telephone set 2 is installed in a public telephone box 1. A display panel 3 is functionally connected to the set 2. The display period of a message displayed on the panel 3 is changed despondently upon speaking time using the set 2 through a means 4. The set 2 is provided with an insertion port 5 into which a prepaid card 6 can be inserted. Prepaid speaking frequency 7 is stored in the card 6 and advertisement is stored in a memory area 9.
COPYRIGHT: (C)1989,JPO,下面是Device for monitoring contents/period of displayed advertisement专利的具体信息内容。

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