detailed description about camera , camera resolution , audio and video formats along with camera features present in mobile devices

1. PRIYANKA SHARMA

2. MULTIMEDIA
 A file or content that is a combination of two or
more media is referred to as multimedia.
 Multimedia devices are electronic media devices
used to store and experience multimedia content.

3. CAMERA
AUDIO PLAYER/FORMATS
VIDEO PLAYER/FORMATS
IMAGE VIEWER
FM

4. CAMERA OBSCURA

5. Working of a camera

6. Working of a camera
 LENS :A camera lens collects the available light and focuses it on the
sensor.
 APPERATURE :The aperture is the size of the opening in the camera.
It's located behind the lens
 SHUTTER :The amount of time that light is allowed to pass through
the aperture.
• CHARGED COUPLED DEVICE(CCD) :The CCD is a collection of
tiny light-sensitive diodes, which convert photons (light) into electrons
(electrical charge). These diodes are called photosites. In a nutshell,
each photosite is sensitive to light -- the brighter the light that hits a
single photosite, the greater the electrical charge that will accumulate at
that site.

7. WORKING OF CAMERA
• ANLOG TO DIGITAL CONVERTER : IT converts the
electrically received information into digital(binary
format).
• MICROPROCESSOR : Interpolation is handled
by a microprocessor after the data has been
digitized.
• DISPLAY :Once the image leaves the CCD sensor , it is
ready to be viewed on the DISPLAY.

8. TYPES OF DISPLAYS IN MOBILES
 LCD
 TFT
 IPS
 OLED
 AMOLED
 SUPER AMOLED
 RETINA DISPLAY

9. HDR
Panorama
Gps location
Exposure
Colour effect
Scene mode
White balance
Image properties
Self timer
Capture number
Picture size
Preview size
ISO

10. •Microphone
•Audio quality
•Time lapse interval
•Video quality

11. The display resolution of a digital system is the number of
pixels in each dimension that can be displayed.
It is usually quoted as width × height, with the units in
pixels: for example, "1024 × 768" means the width is 1024
pixels and the height is 768 pixels.

12. RESOLUTION FORMATS
RESOLUTION LABELS DIMMENSIONS
 Qcif
 Qvga
 Hvga
 Vga
 Svga
 Hd (720p)
 Full hd(1080p)
 176*144
 320*240
 480*320
 640*480
 800*600
 1280*720
 1920*1080

14. CODECS AND CONTAINERS
CODECS CONTAINERS
 Short for encoder/decoder
 Chief determiner of quality.
 Eg MPEG
 WMV
 QUICKTIME 6
 Container describes the
structure of a file. where the
various pieces are stored and
which codec is used by which
piece.
 It contains the audio/video
codec and metadata.
 .MP4/AVI
 .ASF
 .MOV

15. •FM broadcasting is a broadcasting technology pioneered by
Edwin Howard Armstrong .
•The term "FM band" describes the frequency band in a given
country which is dedicated to FM broadcasting

16. FREQUENCY MODULATION
• Frequency modulation is a form of modulation which conveys
information over a carrier wave by varying its frequency.

17. Frequency modulation
RADIO
ANTENNA
RADIO TUNNER
RESONATOR
CAPACITOR INDUCTOR

18. Radio frequency channels
 A communication channel, or channels, refers either
to a physical transmission medium such as a wire, or to
a logical connection over a multiplexed medium such
as a radio channel.
 A channel is used to convey an information signal.
 A channel has a certain capacity for transmitting
information, often measured by its bandwidth in Hz
or its data rate in bits per second.

19. Features in mobile fm
 Auto search
 Speaker
 Record fm
 Manual search
 Automated search

20. Thank you !!!