Character signal generating device
专利汇可以提供Character signal generating device专利检索，专利查询，专利分析的服务。并且PURPOSE: To ensure generation of the high-quality character signals for the device which generates the character signals by displaying the character patterns of the kana, (Japanese syllabary) symbols and others on the CRT and the like and then picking up them via the pickup tube, by dividing the photoelectric screen of the pickup tube into some blocks and then switching the voltage of the focusing electrode with every block.
CONSTITUTION: In the character signal generating device which picks up plural number of the character pattern via pickup tube 18 to generate the character signals, one or more than one character on the photoelectric screen of tune 18 is defined as one block, and the digital information equivalent to the focusing electrode voltage value at the position of the character read out of CPU13 is applied as the set voltage to the focusing electrode of tube 18 via dynamic focus circuit 20. And the voltage is kept until the end of the character reading of the blocks. Then plural units of voltage dropping diodes are connected to the high voltage power circuit in circuit 20, and the photo transistors are connected to both ends of the diode block producing the fixed voltage drop. Then the light emitting diode connecting to the photo transistors is selected to generate the prescribed focus voltage.
COPYRIGHT: (C)1980,JPO&Japio，下面是Character signal generating device专利的具体信息内容。
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