CRUM CRUM UNIT MOUNTABLE IN CONSUMABLE UNIT OF IMAGE FORMING APPARATUS AND IMAGE FORMING APPARATUS USING THE SAME

Disclosed is a CRUM unit mountable in an image forming apparatus. The CRUM unit capable of reducing the number of connection terminals between image forming apparatuses comprises: a decoding unit converting a first clock signal received from an image forming apparatus into a second clock signal; and...

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Bibliographische Detailangaben
Hauptverfasser: KIM YOUN JAE, KIM JIN BOO, SEO CHANG KEUN
Format: Patent
Sprache:eng ; kor
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Beschreibung
Zusammenfassung:Disclosed is a CRUM unit mountable in an image forming apparatus. The CRUM unit capable of reducing the number of connection terminals between image forming apparatuses comprises: a decoding unit converting a first clock signal received from an image forming apparatus into a second clock signal; and a control unit managing a memory unit based on the second clock signal. The first clock signal is divided into a data interval and an idle interval having different pulse widths. The second clock signal is a clock signal maintained with a high value of a low value in the idle interval. 화상 형성 장치에 장착 가능한 CRUM 유닛이 개시된다. 본 CRUM 유닛은, 화상 형성 장치로부터 입력받은 제1 클럭 신호를 제2 클럭 신호로 변환하는 디코딩부, 및, 제2 클럭 신호에 기초하여 메모리부를 관리하는 제어부를 포함하고, 제1 클럭 신호는 펄스 폭이 다른 데이터 구간 및 아이들 구간으로 구분되고, 제2 클럭 신호는 아이들 구간에서 하이 값 또는 로우 값으로 유지되는 클럭 신호이다.