CN103957369A - Self-adaptive projection screen side control circuit - Google Patents
Self-adaptive projection screen side control circuit Download PDFInfo
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- CN103957369A CN103957369A CN201310756986.0A CN201310756986A CN103957369A CN 103957369 A CN103957369 A CN 103957369A CN 201310756986 A CN201310756986 A CN 201310756986A CN 103957369 A CN103957369 A CN 103957369A
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- control circuit
- projection screen
- circuit
- self
- side control
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Abstract
The invention discloses a self-adaptive projection screen side control circuit which includes a real-time IV conversion circuit, a signal low-pass filter, a multi-channel synchronous AD acquisition device and an ARM kernel data processing circuit. The self-adaptive-projection-screen-side control circuit overcomes defects of the prior art and is capable of controlling and automatically identifying new coordinates of a projection target object and accurately re-projecting pictures on the target object.
Description
Technical field
Invention relates to controlling projection regulation technology field, specifically belongs to a kind of self adaptation projection screen end control circuit.
Background technology
Movement when projection target occurrence positions; for example projection screen departs from original position; the convenience of the equipment such as projection or photography is used, operated to prior art; conventionally can adopt suspention adjusting device to hang, regulate; although this device is conducive to save the space of placing those equipment, those current suspention adjusting device structures are more complicated, not compact, and when regulating, the adjusting in each orientation can produce phase mutual interference; cause and need to repeatedly repeatedly regulate, regulate efficiency low.
Summary of the invention
The object of invention has been to provide a kind of self adaptation projection screen end control circuit, has overcome the deficiencies in the prior art, can control, and automatically identifies the new coordinate of projection target thing, and picture is projected on target object again accurately.
The technical scheme that invention adopts is as follows:
A self adaptation projection screen end control circuit, this described control circuit, is comprised of real-time IV change-over circuit, low pass signal filtering, Multi-path synchronous AD collection, ARM kernel data treatment circuit.
Described real-time IV change-over circuit, photoelectric current is converted to voltage signal, pass through low-pass filter circuit, signal is processed, Multi-path synchronous AD gathers port and adopts the collection of DMA memory-type, and each road signal data carries out cycle calculations by ARM kernel, obtains afterwards as calculated the optical information of corresponding pixel points, for obtaining fast the arm processor of multiple signals, by host computer communication port, form and communicate by letter with host computer, send inversion result and parameter information.
Compared with the prior art, the beneficial effect of the invention is as follows:
Invention can be controlled, and automatically identifies the new coordinate of projection target thing, and picture is projected on target object again accurately.
Accompanying drawing explanation
Fig. 1 is invention circuit diagram;
Fig. 2 is inventive principle figure.
Embodiment
Referring to accompanying drawing, a kind of self adaptation projection screen end control circuit, this described control circuit, by real-time IV change-over circuit, low pass signal filtering, Multi-path synchronous AD gathers, ARM kernel data treatment circuit forms, described real-time IV change-over circuit, photoelectric current is converted to voltage signal, pass through low-pass filter circuit, signal is processed, Multi-path synchronous AD gathers port and adopts the collection of DMA memory-type, each road signal data carries out cycle calculations by ARM kernel, obtain afterwards as calculated the optical information of corresponding pixel points, for obtaining fast the arm processor of multiple signals, by host computer communication port, form and communicate by letter with host computer, send inversion result and parameter information.
Claims (2)
1. a self adaptation projection screen end control circuit, is characterized in that: this described control circuit, is comprised of real-time IV change-over circuit, low pass signal filtering, Multi-path synchronous AD collection, ARM kernel data treatment circuit.
2. a kind of self adaptation projection screen end control circuit according to claim 1, it is characterized in that: described real-time IV change-over circuit, photoelectric current is converted to voltage signal, pass through low-pass filter circuit, signal is processed, Multi-path synchronous AD gathers port and adopts the collection of DMA memory-type, and each road signal data carries out cycle calculations by ARM kernel, obtains afterwards as calculated the optical information of corresponding pixel points.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310756986.0A CN103957369A (en) | 2013-12-27 | 2013-12-27 | Self-adaptive projection screen side control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310756986.0A CN103957369A (en) | 2013-12-27 | 2013-12-27 | Self-adaptive projection screen side control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103957369A true CN103957369A (en) | 2014-07-30 |
Family
ID=51334584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310756986.0A Pending CN103957369A (en) | 2013-12-27 | 2013-12-27 | Self-adaptive projection screen side control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103957369A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1313985A (en) * | 1999-06-10 | 2001-09-19 | 索尼株式会社 | Recording medium drive device and tilt detection method |
| CN1564587A (en) * | 2004-03-30 | 2005-01-12 | 四川长虹电器股份有限公司 | Multi-media visual projecting system |
| CN100382592C (en) * | 2003-08-06 | 2008-04-16 | 三菱电机株式会社 | Method and system for determining correspondence between locations on display surface having arbitrary shape and pixels in output image of projector |
| CN201369800Y (en) * | 2009-03-27 | 2009-12-23 | 四川华控图形科技有限公司 | Smart screen system |
| CN101697056A (en) * | 2009-10-27 | 2010-04-21 | 苏州巨像科技有限公司 | Intelligent shooting projection system with frame self-adaptive function and projection method thereof |
| CN201926858U (en) * | 2010-12-31 | 2011-08-10 | 深圳展景世纪科技有限公司 | Projector |
| CN103338342A (en) * | 2013-03-19 | 2013-10-02 | 卿婷 | Self-adaption projector |
-
2013
- 2013-12-27 CN CN201310756986.0A patent/CN103957369A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1313985A (en) * | 1999-06-10 | 2001-09-19 | 索尼株式会社 | Recording medium drive device and tilt detection method |
| CN100382592C (en) * | 2003-08-06 | 2008-04-16 | 三菱电机株式会社 | Method and system for determining correspondence between locations on display surface having arbitrary shape and pixels in output image of projector |
| CN1564587A (en) * | 2004-03-30 | 2005-01-12 | 四川长虹电器股份有限公司 | Multi-media visual projecting system |
| CN201369800Y (en) * | 2009-03-27 | 2009-12-23 | 四川华控图形科技有限公司 | Smart screen system |
| CN101697056A (en) * | 2009-10-27 | 2010-04-21 | 苏州巨像科技有限公司 | Intelligent shooting projection system with frame self-adaptive function and projection method thereof |
| CN201926858U (en) * | 2010-12-31 | 2011-08-10 | 深圳展景世纪科技有限公司 | Projector |
| CN103338342A (en) * | 2013-03-19 | 2013-10-02 | 卿婷 | Self-adaption projector |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140730 |
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| RJ01 | Rejection of invention patent application after publication |