The presentation discusses the history and workings of remote controls. It begins with an introduction of the group members and topic, which is remote controls. It then provides a brief history, explaining that remote controls were first developed in the early 1900s to control devices like radios and TVs. The main part of the presentation covers how infrared remote controls work by sending infrared light signals to receptors on devices, the circuitry involved, and examples of uses such as for TVs, radios, military applications, and more. It concludes that infrared remote controls have significantly impacted entertainment and industry by making control wireless.

1. Welcome to Our
Presentation
Course Teacher:
Rethwan Faiz

2. Group Members:
Name ID NO
Bari Saimum 13-25196-3
Ahmad Ishtiaq 13-24970-3
Himel,Md Muktadir Jannat 13-24267-2
Islam, Md Ashikul 12-21022-1

3. The name of our
Presentation Topic is………..

4. Remote Control

5. INDEX
Introduction
How they work
How signal is received
Creator/ Inventor
History
Circuit Diagram
Uses
Conclusion
Reference

6. Introduction
Remote controls were first developed in the early
1900’s
Now remotes us IR (Infrared Remote) control
They can control multiple different thing and all at
the same time
They are not only used for entertainment but also
military, industry, and recreation

7. The Basics
Infrared Remote Controls developed in the
late 1970’s
Infrared Remote Controls use infrared light
and photo receptors
Uses different light frequencies for different
functions.

8. How they work
These remotes use invisible light beams
to send signals to electronic devices
Light is received by receptors in devices
Different frequencies do different things
Infrared Remote controls today can
control many different devices at one time

9. How signal is received
Light is sent out by remote control and is received
by phototransistor
If line of sight is not possible IR extenders help out
They receive signals and transmit signals to device
via radio wave

10. Creator/Inventor
Nikola Tesla first to use remote control on toy
boat
Phil co Mystery Control (1939) was first
wireless remote for electronic devices
First Infrared Remote controls developed in
1977-1978

11. History
First remotes connected with wires to devices
First wireless remote used to control a toy boat
Next moved to visible light beams and sound waves
Then Infrared Remote controls introduced
Now radio waves are more common because of
problems with pointing light beam at receptor.

12. Changed to Infrared Remote Control for a
couple of reasons
Problems with early remotes
Early remote controls could be ineffective
Outside sources could also change channels / volume
People wanted to be able to control more functions

13. Circuit Diagram

14. Circuit Description
The remote we use, sends a train of bits (0’s and
1’s) of some fixed length modulated with a 38
KHz infrared signal
The demodulated signal from TSOP sensor is fed to
pin no. 2 of IC PIC12F675
The decoded signal from PIC 12F675 is fed to pin
no. 10 (port 3.0) RXD (serial input port) of
AT89S52

15. Uses
They can control a multiple of different of
things including-
Radios
TV’S
DVD/CD players
Video Games
Toys
Military Uses
Space/NASA

16. TV Uses
TV’s are the most popular use of infrared
remote controls
Used for multiple functions on the TV
Also used for controlling electronics
connected to TV

17. Radio, DVD, CD Players
• Use same basic principles as TV remote
controllers
• Use same types of light beams to control
functions of player
• Now usually all combined into one type of
remote

18. Multi Use Controllers
• Used to control multiple electronic devices
• First invented in the late 1970’s
• Now the most common type of remote

19. Military Uses
• Used in many different applications
• Used in missile control and electric warfare
• Used in IED detonation
• New IED’s are immune to radio detonation
(Arment, 2006, sec 2 par 2-3)

20. Industry Uses
• Used to control
– Sub stations
– Pump Storage Power Stations
– HDVC plants

21. Entertainment Uses
• Infrared remote controls can be used with video
games
• Makes wireless play a lot easier
• All major video game consoles now use Infrared
remote control or radio control

22. • Infrared Remote Control has had a big impact
on today’s world
• Has freed us from wires and has made
entertainment and industry faster and easier
Conclusions

23. Reference
Goh, A., Yong, Y., Chan, C., Then, S., Chu, L., Chau, S.,
et al. (2008). Interactive PTZ Camera Control
System Using Wii Remote and Infrared
Sensor Bar. Proceedings of World Academy of
Science: Engineering & Technology, 36127- 132.
Retrieved from Academic Search Complete database.
Remote control. (2010, April 4). In Wikipedia, The Free
Encyclopedia. Retrieved 17:27, April 13, 2010,
fromhttp://en.wikipedia.org/w/index.php?title=R
emote_control&oldid=35972894

24. Ament, Phil.(2006, December 5). Remote
Control. Retrieved April 5, 2010, from The Great
Idea
Finderwebsite:http://www.ideafinder.com/history/
inventions/remotectl.htm
The History of TV Remote Controls. Retrieved
April 13,
2010, from Electronic Adventures website:
http://www.electronicadventure.us/history.htm

25. Have any Question

26. Thank you