S.H.A.D.O.
video Phone Mk.II

This project is currently under development.

Custom LCD Display Controller

Last updated: 12th Nov, 2018
Please watch this space for further developments - CLICK HERE to request updates.

Features

● The custom LCD display controller links to a custom 8 inch (H165.1 x V124.5 mm) high resolution (1024 x 768) T.F.T. (Thin film transistor) LCD screen, the display clear, consistent, colourful and no flicker.
● There are inputs for a Studio B.N.C. (Bayonet Neill–Concelman) input, so that the signal has mutual interference reduction, and can thus achieve the best signal input.
● The screen also supports chromatic Ypbpr input as the more vivid the colour, the more realistic the final images will be. YPbPr or Y'PbPr, also written as Ypbpr, is a colour space used in industry and broadcasting video electronics, in particular in reference to component video cables. YPbPr is the analogue version of the YCbCr colour space; the two are numerically equivalent but YPbPr is designed for use in analogue systems while YCbCr is intended for digital video. NB: YPbPr is commonly referred to as ‘component video’ by certain manufacturers, however there are many types of component video, most of which are a variant of RGB. Some video cards come with video-in/video-out (VIVO) ports for connecting to component video devices in the video and broadcasting industries.

Video Phone Mk.II - Custom LCD Display Controller

TECHNICAL DETAILS
The YCbCrYPbPr is converted from the RGB video signal, which is split into three components: Y, PB, and PR. Y carries luma (brightness or luminance) and synchronization (sync) information. Y = 0.2126 R + 0.7152 G + 0.0722 B. Before the advent of colour television, the Y axis on an oscilloscope display of a video waveform represented the intensity of the scan line. With colour, Y still represents intensity but it is a composite of the component colours. PB carries the difference between blue and luma (B - Y). PR carries the difference between Red and luma (R - Y).To send a Green signal as a fourth component is redundant, as it can be derived using the Blue, Red and luma information.

When colour signals were first added to the NTSC-encoded black and white video standard, the Hue was represented by a phase shift of a colour reference sub-carrier. P for phase information or phase shift has carried through to represent colour information even in the case where there is no longer a phase shift used to represent hue. Thus, the Y PB PR nomenclature derives from engineering metrics developed for the NTSC colour standard. The same input cables can be used for YPbPr and composite video.

This means that the Yellow, Red, and White RCA connector cables can be used in place of the YPbPr connectors, provided the user is careful to keep track of the device functions. YPbPr advantages ”Female” RCA connectors used to output YPbPr component video from a set-top-box, DVD player or similar device. Female connections in this configuration are also used for YPbPr inputs on display devices such as TVs and some monitors. Signals that use YPbPr offer enough separation that no colour multiplexing is needed, so the quality of the extracted image is nearly identical to the signal before encoding. S-Video and composite video mix the signals together by means of electronic multiplexing; however, more often than not the signal is degraded at the display end as the display is not able to separate the signals completely. It is thus possible for their multiplexed counterparts to interfere with each other. Amongst consumer analogue interfaces, only YPbPr and analogue RGB component video are capable of carrying non-interlaced video and resolutions higher than 480i or 576i, up to HD ready for Ypbpr. So, the custom S.H.A.D.O. Video Phone display controller/driver board is ready for most inputs.

SPECIFICATIONS

● LCD Display Panel size: 165.1 x 124.5 mm (8 inch diagonal.) display

● Video input: 3Vp-p CVBS

● Aspect ratio: 16:9 and 4:3

● Maximum resolution: 1024 x 768

● Effective viewing area: 162 x 121 mm

● Viewing angle: 120°(H)/100°(V)

● Panel lifetime: 10,000 hours

● Brightness: 250cd/m2

● Contrast ration: 300:1

● Response time: 12ms

● Power input: DC12V-1000mA

● Speaker: 1W (max)*1
● O.S.D. (On- Screen Display)

● Temperature range (operation): 0-40 degC

● Video mode input switching: supports multi-channel video reception, high sensitivity, strong interference resistance

● Support for VGA input: can be used for computer liquid crystal display (640*480/60Hz, 800*600/60Hz, 1024*768/60Hz)

● Supports high-definition HDMI input

● Also supports image flip up/down and horizontal views
● Timing switch machine and automatic signal standby functions

● Supports USB interface to charge (5 volt @ 1 amp)

LCD Display Controller

TEST VIDEO #1: One of the very first video tests of the custom LCD driver/controller driving the custom LCD screen.

SUB-SYSTEMS

S.H.A.D.O. Video Phone Mk.II

Background: From the very first moment I was able to watch UFO (I was about eight years old) I have dreamed about possessing a Video Phone just like Commander Straker’s! But, life somehow got in the way and I just never seemed to have the time or chance to embark on such a project: until now.  Initially, I did consider building an exact replica of the original video phone, and propbably will at some stage. But, after much thought about the actual practicalities of such a device, I thought it might be better to design and build a Mk.II version that in this day and age would be more practical, and one that I could actually use on a day to day basis. Thus, the idea for the Video Phone Mk.II was born! I wrote a list of the essential features I needed, and also attempted to somehow merge those features to be in keeping - as much as possible - with the original design version. I decided to employ a custom designed LCD screen and Custom Display Controller with multiple video/computer inputs. I also decided on a colour display instead of the original monochrome.

Video Phone Mk.II Computer

Specifications: ● Intel CPU runs Microsoft Windows 10 Pro and Linux. ● Memory: System 4-16 GB DDR3 RAM + 57.5GB (C: Boot) on-board SSD, plus 32-512GB maximum extended capacity. ● Supports multi-boot Windows 10 pro & Linux (Ubuntu) System. The system is able to run full Microsoft Office 2016 (2007 and 2010) as a full office PC. ● Equipped with high-efficiency, lower-power Intel Processor N3450 (2M Cache, up to 2.2 GHz and burst mode) and integrated Intel HD Graphics 500, with seamless visual, life-like images and smooth graphics. ● Dual band WIFI 2.4GHz + 5.GHz and 10/100/1000 Mbps LAN, for fluent video, practically no video buffering, stuttering or freezing. ● Supports up to 4K Video (external ultra high-definition) for high definition video viewing and video effects. ● No moving parts at all (i.e. no fan: uses heatsink), no hard disk drive) ● PCB mounts support custom heatsink for fan-less cooling for the computer system and associated systems.

Selection Switches

I completed a fair amount of research into the origin of the selection switches used on the original S.H.A.D.O. Video Phone. The selection switches are labelled A-G (left), 1-8 (centre) and H-N (right) that’s 22 switches in total. My conclusion was that the switches (single-pole, dual throw selector switch) were originally manufactured for ICL and also IBM - both large computer manufacturers. ICL (originally International Computers and Tabulators later renamed ICL (International Computers Limited ). ICL was eventually acquired by Fujitsu, and in April 2002 it was re-branded as Fujitsu. IBM (International Business Machines Corporation) originated in 1911 as the Computing-Tabulating-Recording Company (CTR) and was renamed International Business Machines in 1924 and is still operating.

Video Display Driver

Specifications: Display input support for Studio B.N.C. (Bayonet Neill–Concelman) input, so that the signal has mutual interference reduction, and can thus achieve the best signal input.  The video card also supports chromatic Ypbpr input: the more vivid the colour, the more realistic the final image.  YPbPr or Y'PbPr, also written as YPBPR, is a colour space used in industry and broadcasting video electronics, in particular in reference to component video cables. YPbPr is the analogue version of the YCbCr colour space; the two are numerically equivalent but YPbPr is designed for use in analogue systems while YCbCr is intended for digital video. NB: YPbPr is commonly referred to as ‘component video’, however there are many types of component video, most of which are a variant of RGB.

Video Display Controls

Specifications: Panel size: 8" digital display, Video input interface: VGA/HDMI/BNC/USB/AV, Aspect ratio: 4:3, Resolution: max: 1280 x 800, HDMI Input support resolution: 480i /60Hz,480P /60Hz,576i /50Hz,576P/ 50Hz,720P 50/60Hz,1080i 50/60Hz,1080P 50/60 Hz, Viewing angle: Wide view angle 178 degrees, Brightness: 400cd/m2, Contrast ration: 800:1, Response time: 18ms, OSD Menu Language selection.