Optical Mouse (Download Seminar Report)

[ismail]

Optical mouse
An optical mouse uses a light-emitting diode and photodiodes to detect movement relative to the underlying surface, rather than internal moving parts as does a mechanical mouse. the optical mouse actually uses a tiny camera to take 1,500 pictures every second. A small red red light-emitting diode (LED) is present in the mouse that emits the light which after reflection , falls onto a complimentary metal-oxide semiconductor (CMOS) sensor. This sensor sends this signal to a digital signal processor (DSP). The DSP is able to detect patterns in the images and see how those patterns have moved since the previous image. It thus determines determines how far the mouse has moved from the previous and thus determines the new co-ordinates. The smooth motion is achieved by doing this millions of times a second.

benefits
less wear and a lower chance of failure as there are less moving parts
-tracking sensors are present inside and as a result, does not get affected by dirt
-smoother response can be achieved by increased tracking resolution
-mouse pad is not required.

optical mouse sensor
used to implement a non- mechanical tracking engine for computer mice. It measures changes in position by optically acquiring sequential surface images and determining teh direction of movement mathematically.

for more details, see;
http://computer.howstuffworksquestion6311.htm
http://en.wikipediawiki/Mouse_%28computi...tical_mice
http://scribddoc/25351872/Optical-Mouse-Sensor

[arun88]

Every day of our computing life, we reach out for our mouse whenever we want to move our cursor or activate something. Our mouse senses our motion and our clicks and sends them to the computer so that it can respond appropriately. It is amazing how simple and effective a mouse is, and it is also amazing how long it took Mice to become a part of everyday life. Given that people naturally point at things usually before they speak it is surprising that it took so long for a good pointing device to develop. Although originally conceived in the 1960s, it took quite some time for mice to become mainstream. In the beginning there was no need to point because computers used crude interfaces like teletype machines or punch cards for data entry. The early text terminals did nothing more than emulate a teletype (using the screen to replace paper), so it was many years (well into the 1960s and early 1970s) before arrow keys were found on most terminals. Full screen editors were the first things to take real advantage of the cursor keys, and they offered humans the first crude way to point.

http://pptpdf.net/subcategory.php?categ=...-MOUSE.pdf

[im.vibgyor]

[attachment=6674]
Optical Mouse

With advances it mouse technology, it appears that the venerable wheeled mouse is in danger of extinction. The now-preferred device for pointing and clicking is the optical mouse.

Able to work on almost any surface, the mouse has a small, red light-emitting diode (LED) that bounces light off that surface onto a complimentary metal-oxide semiconductor (CMOS) sensor. The CMOS sensor sends each image to a digital signal processor (DSP) for analysis. The DSP, operating at 18 MIPS (million instructions per second), is able to detect patterns in the images and see how those patterns have moved since the previous image. Based on the change in patterns over a sequence of images, the DSP determines how far the mouse has moved and sends the corresponding coordinates to the computer. The computer moves the cursor on the screen based on the coordinates received from the mouse. This happens hundreds of times each second, making the cursor appear to move very smoothly.

[naveenbansal]

4g seminar are here. please go through the following threads.

http://seminarsprojects.net/Thread-4g-te...ars-report
http://seminarsprojects.net/Thread-4g-wi...t-download

[mintu]

Please send me full seminar report on "optical mouse".[/size][/font]

---

Please send me full seminar report on Optical Mouse .

[ankush gawande]

If yo want to download, the above post containing a number of attachments on the topic. please download it. Just click on it

[jaswalsaurabh]

thanks u for your valuable report keep posting

---

thanks thanks u for your valuable report keep posting

[bipul143]

sir
i need the report on optical mosue. i hope that you will send this as soon as possible.

[patnaiknaresh]

this thread itself containing the full report. why didn't you visit the previous pages?

[ranilkc]

RE: Optical Mouse (Download Seminar Report)

---

full document..