Vibration drive device capable of generating click feeling and image pickup apparatus
US-2016373630-A1 · Dec 22, 2016 · US
Driving device and driving circuit for a vibration actuator
US9054606B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9054606-B2 |
| Application number | US-201313911190-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 6, 2013 |
| Priority date | Jun 15, 2012 |
| Publication date | Jun 9, 2015 |
| Grant date | Jun 9, 2015 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A driving device, including a drive signal generating section configured to variably control a frequency or an amplitude of an application voltage to a vibration member, includes a variable period setting section configured to output a value of a PWM period, the set value being set so that an average value of PWM periods in one target period of the application voltage is one fraction of an integer number of the target period by variably adjusting the PWM periods in an aperiodic manner; a drive waveform information output section; and a variable period PWM signal generating section configured to generate a PWM signal based on the set value of the PWM period output from the variable period setting section and drive waveform information of the application voltage, wherein the drive signal generating section is a digital circuit.
First claim
Opening claim text (preview).
What is claimed is: 1. A driving device for a vibration actuator, comprising an AC voltage applying section comprising a drive signal generating section configured to variably control at least one of a frequency and an amplitude of an application voltage to be applied to a vibration member of the vibration actuator, the drive signal generating section comprising: a variable period setting section configured to output a value of a PWM period, the value being set so that an average…
Assignees
Inventors
Classifications
Patent family
Related publications grouped by family.
External sources
Next steps
Free tools are coming soon. Tell us what you want to track and we'll notify you.
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9054606B2 cover?
- A driving device, including a drive signal generating section configured to variably control a frequency or an amplitude of an application voltage to a vibration member, includes a variable period setting section configured to output a value of a PWM period, the set value being set so that an average value of PWM periods in one target period of the application voltage is one fraction of an inte…
- Who is the assignee on this patent?
- Canon Kk
- What technology area does this patent fall under?
- Primary CPC classification H02N2/142. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jun 09 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).