 |
| Domino Converter |
| Domino |
| Owners TV's |
| NVCF |
| Harpenden |
| Wootton Bassett |
| Review |
| Bandwidth |
| Related Information |
| Technical Info. |
| MURPHY Day 2007 |
| Electronic Stuff |
| Malcolm's Projects |
| Links |
| Contact by email |
 |
 |
British 405-Line Television  1936 to 1985 |
| The DOMINO 625 to 405-Line Standards Converter 2003 to 2006 |
| No Longer Available! |
| Production of the DOMINO Standards Converter has ended. |
| There is an alternative converter available here... Aurora Standard’s Converter’s |
405 Line sets, related articles and standards converters (including diagrams of DOMINO)
May 2008 There are a few interesting 405 Line related videos on YouTube, have a look!...
YouTube NVCF Television Display The BVWS Vintage Television Exhibition 2006
YouTube Homemade 405 line TV Standards Converter 405 Line set working
YouTube Inside 405 line Standards Converter made from TTL The "works" of the converter
 |
 |
Details:
| Fully built and tested ready for use, in a high quality metal case. 203 x 177 x 65mm |
| Converts 625 line video source to 405 line black and white video and VHF signal on Band 1 |
| RF Output Channel 1 (London/Alexandra Palace) or Channel 4 (Birmingham) |
| Converts off-air (live) transmissions received via the tuner of a VCR, or playback from 625 line VHS tapes or DVD's. |
| Digital conversion with 2 line interpolation gives linear, stable pictures. |
| The built in crystal controlled VHF modulator produces a high output enabling several sets to be run with a spiltter. |
| An 18dB attenuator is supplied to match the high converter output to your television. |
| Powered by external regulated 12V DC power supply, supplied with the converter. (No Mains voltages inside unit) |
Click here for information about 405-Line VHF Channels
What goes on inside the box?
The input 625 line video is converted to 8 bit digital codes, selected lines are written to a
frame store memory which is then read out to give the 405 line video,
Processing of the stored lines gives the interpolation needed to give a 405 line picture
without stepped edges.
Two PIC
Microcontrollers (PIC16F627) one on the 625 input side, one for the 405 output side
manage all the control and timing operations.
The input write clock is a PLL with the read clock derived from a crystal.
Specification:
| 625 line video input via BNC connector at 1V/75 ohm |
| 405 line video output via BNC connector at 1V/75 ohm |
| Audio input via Phono connecter, with level adjustment. |
| 12 Volt DC input via 2.1mm "DC power connector" |
| 405 line VHF output via coaxial connector. |
| Crystal controlled carrier frequencies. |
| Output on VHF Band 1 approx 150 millivolts peak to peak (Vision). |
| (Version 1) CH 1, Vision 45 MHz Sound 41.5 MHz |
| (Version 2) CH 4, Vision 61.75 MHz Sound 58.25 MHz |
| No Longer Available! |
| Production of the DOMINO Standards Converter has ended. |
| This web site is a reference and set gallery for the owners of Domino Standards Converters |