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Simon Inns
MAME Fan
Reged: 05/14/18
Posts: 4
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Re: DU: The great laserdisc flood
05/15/18 07:10 AM



Quote:


I would ONLY use an industrial player




The Pioneer LD-V4300D was chosen as the reference player for a number of reasons:


  • The testing cycle for the board is quite involved and targeting many players isn't practical (or affordable)
  • The player is industrial and single-sided which means the mechanism is strong and the head-tracking as solid as possible
  • The player is NTSC and PAL compatible and supports digital and analogue audio
  • The player is RS232 controllable (allowing the 'player integrated capture' functionality)
  • The player has a good, clear service manual which is widely available
  • The player is fairly modern and seems to be relatively easy to source (I had to buy 3 just for this project)


There is no reason why you cannot use other players - but there is no standard for the RF-tap; so you will be on your own to verify the RF stage and adjust for the player (please publish the results if you do this though!).

On the resolution - yes it's 'only' 10-bits but that is being used to record the RF (it is not video and the two should not be confused). The RF signal is generated by the laser shifting between two distances (pit or no pit) - so the resolution provides sensitivity when detecting the current state - you could go to 10 million bits resolution and not really gain anything more except expense).

It's the sampling speed that provides most of the actual timing recovery which is why 8 times the Nyquist is way more important (and the board is capable of 40 million samples per second).

Still, the project is completely open - so if you want to modify the design and improve it, please go right ahead! I am. by no means, a world-leader in RF design. By making it open my hope is that others will join in and make it better







Entire thread
Subject Posted by Posted on
* DU: The great laserdisc flood SmitdoggAdministrator 05/12/18 08:39 PM
. * Re: DU: The great laserdisc flood Kitsune Sniper  05/15/18 06:33 AM
. * Re: DU: The great laserdisc flood btribble  05/18/18 04:42 AM
. * Re: DU: The great laserdisc flood Kitsune Sniper  05/18/18 07:44 AM
. * Re: DU: The great laserdisc flood Simon Inns  05/15/18 07:10 AM
. * Re: DU: The great laserdisc flood JonasP  05/15/18 02:01 PM
. * Re: DU: The great laserdisc flood MooglyGuy  05/15/18 04:20 PM
. * Re: DU: The great laserdisc flood Simon Inns  05/15/18 04:43 PM
. * Re: DU: The great laserdisc flood swm3rd  05/16/18 09:03 PM
. * Re: DU: The great laserdisc flood R. Belmont  05/16/18 10:39 PM
. * Re: DU: The great laserdisc flood jonwil  05/19/18 02:32 AM
. * Re: DU: The great laserdisc flood MooglyGuy  05/19/18 10:29 AM
. * Re: DU: The great laserdisc flood Olivier Galibert  05/17/18 11:43 AM
. * Re: DU: The great laserdisc flood happycube  05/18/18 05:19 PM
. * Re: DU: The great laserdisc flood Kitsune Sniper  05/17/18 09:33 PM
. * Re: DU: The great laserdisc flood Roberto Fresca  05/17/18 08:46 PM
. * Re: DU: The great laserdisc flood DoomSooth  05/17/18 01:01 PM
. * Re: DU: The great laserdisc flood agard  05/14/18 07:57 PM
. * Re: DU: The great laserdisc flood gregf  05/14/18 08:56 PM
. * Re: DU: The great laserdisc flood StilettoAdministrator  05/15/18 12:29 AM
. * Re: DU: The great laserdisc flood gregf  05/15/18 12:35 AM
. * Re: DU: The great laserdisc flood agard  05/15/18 12:15 AM
. * Re: DU: The great laserdisc flood gregf  05/15/18 12:30 AM
. * Re: DU: The great laserdisc flood JustNiz  05/15/18 03:20 AM
. * Mad Dog McCree! gregf  05/14/18 04:52 AM
. * Re: Mad Dog McCree! gamerfan  05/18/18 04:31 AM
. * Re: Mad Dog McCree! *=/STARRIDER\=*  05/14/18 04:56 AM
. * Re: Mad Dog McCree! Antny  05/14/18 06:07 AM
. * Re: Mad Dog McCree! gregf  05/14/18 05:02 AM
. * Re: Mad Dog McCree! Antny  05/14/18 06:11 AM
. * Re: DU: The great laserdisc flood casm  05/13/18 02:33 PM
. * Re: DU: The great laserdisc flood italiandoh  05/13/18 12:57 PM
. * Re: DU: The great laserdisc flood f205v  05/13/18 05:01 PM
. * Re: DU: The great laserdisc flood italiandoh  05/14/18 10:03 PM
. * Re: DU: The great laserdisc flood *=/STARRIDER\=*  05/13/18 05:46 PM
. * Re: DU: The great laserdisc flood italiandoh  05/14/18 10:04 PM
. * Re: DU: The great laserdisc flood *=/STARRIDER\=*  05/15/18 05:09 AM
. * Re: DU: The great laserdisc flood RdW  05/14/18 02:30 AM
. * Re: DU: The great laserdisc flood *=/STARRIDER\=*  05/14/18 06:26 AM
. * Re: DU: The great laserdisc flood *=/STARRIDER\=*  05/14/18 02:52 AM
. * Re: DU: The great laserdisc flood CTOJAH  05/13/18 11:25 AM
. * Re: DU: The great laserdisc flood taz-nz  05/14/18 11:32 AM
. * Re: DU: The great laserdisc flood Kitsune Sniper  05/14/18 06:15 PM
. * Re: DU: The great laserdisc flood Roman  05/14/18 06:21 PM
. * Re: DU: The great laserdisc flood Kitsune Sniper  05/14/18 07:39 PM
. * Re: DU: The great laserdisc flood Simon Inns  05/14/18 07:59 PM
. * Re: DU: The great laserdisc flood gregf  05/14/18 09:41 PM
. * Re: DU: The great laserdisc flood JustNiz  05/15/18 02:38 AM
. * Re: DU: The great laserdisc flood Vas Crabb  05/15/18 08:04 AM
. * Re: DU: The great laserdisc flood Olivier Galibert  05/15/18 07:21 AM
. * Re: DU: The great laserdisc flood Kitsune Sniper  05/15/18 04:23 AM
. * Re: DU: The great laserdisc flood Tornadoboy  05/13/18 03:15 AM
. * Re: DU: The great laserdisc flood CTOJAH  05/13/18 11:15 AM
. * Re: DU: The great laserdisc flood StilettoAdministrator  05/14/18 12:28 PM
. * Re: DU: The great laserdisc flood CTOJAH  05/14/18 04:23 PM
. * Re: DU: The great laserdisc flood StilettoAdministrator  05/14/18 07:54 PM
. * Re: DU: The great laserdisc flood italiandoh  05/13/18 12:46 PM
. * I'm excited like a fridge MASH  05/13/18 02:47 AM
. * Re: DU: The great laserdisc flood Master O  05/13/18 02:37 AM
. * Re: DU: The great laserdisc flood btribble  05/12/18 11:36 PM
. * Re: DU: The great laserdisc flood SmitdoggAdministrator  05/12/18 11:41 PM
. * Re: DU: The great laserdisc flood btribble  05/14/18 06:40 AM
. * Re: DU: The great laserdisc flood Kitsune Sniper  05/12/18 11:35 PM
. * Re: DU: The great laserdisc flood MooglyGuy  05/13/18 07:15 AM
. * Re: DU: The great laserdisc flood Kitsune Sniper  05/14/18 07:38 AM
. * Re: DU: The great laserdisc flood CiroConsentino  05/12/18 10:09 PM
. * Re: DU: The great laserdisc flood R. Belmont  05/16/18 10:44 PM
. * Re: DU: The great laserdisc flood Haze  05/16/18 11:00 PM
. * Re: DU: The great laserdisc flood Simon Inns  05/14/18 04:18 PM
. * Re: DU: The great laserdisc flood taz-nz  05/15/18 12:40 PM
. * Re: DU: The great laserdisc flood SmitdoggAdministrator  05/12/18 10:11 PM
. * Re: DU: The great laserdisc flood Shoegazr  05/13/18 01:03 AM
. * Re: DU: The great laserdisc flood JustNiz  05/13/18 03:10 AM
. * Re: DU: The great laserdisc flood Shoegazr  05/13/18 05:13 AM
. * Re: DU: The great laserdisc flood *=/STARRIDER\=*  05/13/18 03:43 AM
. * Re: DU: The great laserdisc flood MooglyGuy  05/13/18 07:08 AM
. * Re: DU: The great laserdisc flood MC68K  05/13/18 07:13 AM
. * Re: DU: The great laserdisc flood Vas Crabb  05/13/18 07:25 AM
. * Re: DU: The great laserdisc flood JustNiz  05/13/18 04:36 AM
. * Re: DU: The great laserdisc flood Vas Crabb  05/13/18 05:55 AM
. * Re: DU: The great laserdisc flood taz-nz  05/14/18 12:39 PM
. * Re: DU: The great laserdisc flood *=/STARRIDER\=*  05/13/18 04:55 AM
. * Re: DU: The great laserdisc flood JustNiz  05/13/18 05:23 AM
. * Re: DU: The great laserdisc flood *=/STARRIDER\=*  05/13/18 05:51 AM
. * Re: DU: The great laserdisc flood JustNiz  05/13/18 08:10 PM
. * Re: DU: The great laserdisc flood John Doe  05/14/18 03:31 AM
. * Re: DU: The great laserdisc flood JustNiz  05/15/18 02:46 AM
. * Re: DU: The great laserdisc flood taz-nz  05/14/18 01:14 PM
. * definitely material for MAME FAQ section imo gregf  05/14/18 04:45 AM
. * Re: Quick link to Aaron's Laserdisc explanation... Bad A Billy  05/14/18 05:28 AM
. * Re: DU: The great laserdisc flood *=/STARRIDER\=*  05/14/18 02:41 AM

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