Exposure apparatus and image-forming apparatus
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Electric device and printing apparatus using the same
US9216601B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9216601-B2 |
| Application number | US-201313910756-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 5, 2013 |
| Priority date | Jun 29, 2012 |
| Publication date | Dec 22, 2015 |
| Grant date | Dec 22, 2015 |
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Abstract
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An embodiment of this invention relates to an electric device capable of controlling a plurality of elements with an inexpensive, simple configuration, and a printing apparatus using the same. In this embodiment, an operation unit of the printing apparatus switches the states of a plurality of general purpose input/output ports between low-level signal output, high-level signal output, and input high impedance for each time set in a timer by an MPU. This allows LED light emission control and switch key press detection. Also, output ports used for LED light emission control, and input ports used for key press detection are shared using general purpose input/output ports to realize LED light emission control and switch key press detection with a configuration simpler than the conventional configuration.
First claim
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What is claimed is: 1. An electric device which performs turn on/off control of a plurality of light emitting elements, and key press detection of a plurality of switches, the device comprising: a plurality of general purpose input/output ports configured to output driving signals to the plurality of light emitting elements, and input signals indicating key press from the plurality of switches; and a control unit configured to time-divisionally perform the turn on/off control of…
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- What does patent US9216601B2 cover?
- An embodiment of this invention relates to an electric device capable of controlling a plurality of elements with an inexpensive, simple configuration, and a printing apparatus using the same. In this embodiment, an operation unit of the printing apparatus switches the states of a plurality of general purpose input/output ports between low-level signal output, high-level signal output, and inpu…
- Who is the assignee on this patent?
- Canon Kk
- What technology area does this patent fall under?
- Primary CPC classification B41J2/45. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Dec 22 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).