1080p

The difference between 1080p and 1080i

Display specifications can be complicated, considering there are multiple factors to consider – like resolution, refresh rates, contrast ratio, aspect ratio, display size, and HDR capabilities. When looking at TVs and the source signals they receive, a point of contention is the difference between 1080p and 1080i, and what it means for the average TV owner. Below is a simple explanation of what the differences are and what you need to know about the standards.

Progressive and Interlaced

1080p and 1080i refer to a display resolution of 1,920 x 1,080 pixels, and it is the suffixes attached to the resolution number that you must pay attention to.

The “p” in 1080p stands for “progressive”, while the “i” in 1080i means “interlaced”. These terms refer to the scanning technique used to display, store, and transmit images. Progressive scanning is a common method for displaying video, with entire images displayed a certain amount of times per second.

This depends on the frames per second of the source video and the refresh rate of the TV. Interlaced scanning is different, and involves a technique in which alternating halves of an image are displayed per interlacing “field”. A single frame of interlaced 1080i video consists of two sequential 1920 x 540 images, with the first field consisting of all odd-numbered vertical pixel lines and the second all even-numbered pixel lines.

Both these half-images together create a frame every 30th of a second. This means if a second of 1080i video consists of 30 “1,920 x 1,080” frames, it includes 60 “1,920 x 540 fields”. An important note is that when the source video is 1080i/60, there are in fact no full images – as each of the 60 interlaced fields occupy a different point in time and 30 interlaced frames are displayed per second.

This results in a slight offset or reduction in quality when fast movement is displayed or the video is deinterlaced and viewed on a 1080p panel. Deinterlaced car wheel

Visual Difference

Due to the fidelity and fully-displayed frames, a 1080p video delivers a sharper and more refined image which can provide better quality during scenes with lots of motion. Interlaced video suffers in scenes with lots of motion, as it only displays half an image at a single point in time.

This makes it difficult to display fast movement. Compared to progressive scan, interlaced video has more jagged edges and motion artifacts. Visual quality of 1080i video can also depend on your TV, as some video processors are better at deinterlacing video than others.

Broadcast and Decoding

Currently, DStv broadcasts in 1080i and 720p, and does not offer Full HD quality.

Users who use a 1080p TV to watch DStv are in fact watching deinterlaced 1080i video or a 720p broadcast.

A major reason for 1080i broadcasts is reduced bandwidth requirements and infrastructure limitations.

DStv said[1] in 2016 it would not offer Full HD broadcasts any time soon, as their implementation would require changes to broadcast infrastructure and use more bandwidth than the current broadcast resolutions.

Now read: Most-watched TV shows in South Africa[2]

References

  1. ^ said (mybroadband.co.za)
  2. ^ Most-watched TV shows in South Africa (mybroadband.co.za)

Pumpkin 7 inch Android 5.1 Lollipop Quad Core Car Radio Stereo Bluetooth Double Din In Dash Head Unit for PASSAT GOLF JETTA POLO TRANSPORTER Support GPS Navigation Car DVD CD Player with Multimedia System SWC DVR CAM-IN 1080P OBD2 DAB+

Pumpkin 7 inch Android 5.1 Lollipop Quad Core Car Radio Stereo Bluetooth Double Din In Dash Head Unit for PASSAT GOLF JETTA POLO TRANSPORTER Support GPS Navigation Car DVD CD Player with Multimedia System SWC DVR CAM-IN 1080P OBD2 DAB+

  • OS:Android 5.1, CPU:Rockchip PX3 Cortex A9 Quad Core 1.6GHz, RAM:DDR3 1GB, Nand Memory:16GB, Audio output:4*50W max, Screen Resolution:800*480, Cold Boot time:about 25-30s
  • The following car model and year are for reference, please compare the dimensions, shape and power cable of this unit with the central console, harness and diagram of your original to make sure it can fit your car
  • Fit for PASSAT B5 / MK5 2001 – 2005, VW GOLF 2004 – 2009, JETTA 1998 – 2005, CHICO 2004 – 2009, BORA / POLO / MK3 / MK4 2000 – 2009, SHARAN 2000 – 2009, GOLF MK4 1997 – 2003, TRANSPORTER T4 / T5 1998 – 2009, CITI 2004 – 2009
  • GPS (without map card), DVD drive: Region Free, Bluetooth for hands free, USB (up to 32GB)/ SD (up to 32GB), DAB+ Digital Radio (Extra DAB+ box required), OBD2 (Extra device required), WIFI (Built in WIFI modem) / 3G (Extra device required), Cam-In (Extra device required)
  • Package: 1x Car Stereo, 1x antenna adapter, 1x external microphone, 1x GPS antenna, 1x remote controller(without battery), 1x power cable, 1x audio output cable, 1x cam in cable, 1x AUX input cable, 1x user manual, 1x 3G/USB cable+mic cable, 1x radio adapter, 1x mini USB cable

System
OS:Android 5.1
CPU:Rockchip PX3 Cortex A9 Quad Core 1.6GHz
RAM:DDR3 1GB
Nand Memory:16GB
Audio output:4*50W max
Screen Resolution:800*480
Cold Boot time:about 25-30s
Capacitive Touch Screen (5 points)
Image Brightness /Contrast/ Color Adjustable
Mirror-link
For Android phone,use USB connection,mirror and control on the unit
For iPhone 6/6 plus/5/5c/5S,use wifi connection,mirror on the unit cannot control
GPS
You can download your favorite GPS App from player store
AV Output
Can display almost everything to your headrests,even you play the video from USB/SD card or online youtube video
DVD
Compatible Formats:AVI/DVD/DVD+R/DVD-R/DVD+RW/DVD-RW/VCD/MP3/CD/CD-RW/JPEG etc
Support Dual Zone video output for DVD function
Support radio/disc/Bluetooth/USB/SD playback while navigating
Steering Wheel Control
If your original car has Canbus system, please contact us and you will need to buy the KD-Z0011 canbus decoder
Radio
Good quality radio IC: NXP TEF6686 ,with good radio reception
USB/SD
Support Audio Formats:MP3/WMA/WAV/APE/FLAC/ACC/OGG/AC3, etc
Support Video Formats:RMVB/AVI/MPG/MPEG/WMA/VOB/MOV/ASF/FLV/3GP/MP4, etc
DAB+
Digital Audio Broadcasting
OBD2
Real-time data and trouble codes from vehicles computer
WIFI/3G
3G:Support WCDMA/CDMA2000/TD-SCDMA 3G bandwidth
Cam-In
Support RCA reverse camera input

Yeskam Home Security Camera System Wireless 1080P with 10.7″ inch LCD Screen Display Monitor 4 Channel 2.0 Megapixel Outdoor CCTV Surveillance Cameras Pre-installed 2TB Hard Drive Full HD Recording

Yeskam Home Security Camera System Wireless 1080P with 10.7

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Yeskam 1080P Wireless Security Camera Systems with Monitor is your reliable security guard which can be used at residence or business,True Plug and Play With Auto-Pair technology, just power on the device;enjoy live video in minutes on the LCD Display.no need wires anymore, no exposed lines anymore,no need buy monitor!
Motion detection option allows you record only when motion is detected so that you can save hard drive storage space without missing important events.Email & Mobile App notification when while home or away. Pre- installed 2 TB hard-drive records continuously for 480 hours on all 4 channels in 1080p and automatic overwrite, or much longer (50+ days) using motion detection or scheduled recording. convenient installation and easy remote control, this is what the Yeskam advanced security system provides to release your mind.

4CH Wireless NVR with LCD screen

* Built in 10.7″inch LCD screen
* Video input:4*1080P
* Playback:4*1080P;4*960P;4*720P
* Automatically connect WI-Fi Network camera
* HDMI , USB interface.
* Support 1sata * 4TB(Max) Hard disk
* P2P cloud technology reliazed remote view by APP(Android, IOS, IPAD)
* Support Motion detection,Manual Record,Playback.Email Alert and App notification

1080P WiFi IP Camera
1.1080p(1920 x 1080) high definition real time
2.6pcs LED Array for bullet camera with IR-CUT Function
3.all camera with 2.0MP 3.6mm lens
4.Outdoor Metal Case Waterproof IP66
5.Night Vision:100ft(30m)

Package Includes
1* 4CH 1080P WIFI NVR with 10.7″inch LCD Screen
4* 1080P HD WIFI IP cameras
5* power supply
1* USB Mouse
1* 1M Network cable
Included 2TB HDD

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