bahl@Gauss.dec.com (P. Bahl (Victor)) (09/27/90)
Hi, I am looking for cards that are available which have the ability to convert (in real time) portion of the workstation (or PC) screen to standard video. This would include converting a interlaced or non-interlaced signal to any of the following formats: NTSC, PAL, SECAM, S-VHS. Any help in terms of pointers, suggestions, experiences etc. would be greatly appreciated. Thanks Victor Bahl |-----------------------------------------| | Usenet: ...!decwrl!gauss.dec.com!bahl | | Internet: bahl%gauss.dec@decwrl.dec.com | | FAX: (508) 486-7364 | | Phone: (508) 486-5665 (off) | | (508) 454-3834 (Home) | |-----------------------------------------|
david@twg.com (David S. Herron) (09/30/90)
In article <15660@shlump.nac.dec.com> bahl@Gauss.dec.com (P. Bahl (Victor)) writes: >Hi, > >I am looking for cards that are available which have the ability to convert >(in real time) portion of the workstation (or PC) screen to standard video. >This would include converting a interlaced or non-interlaced signal to any of >the following formats: NTSC, PAL, SECAM, S-VHS. If you were using an Amiga then you wouldn't need to convert the video format. It already follows (at least) 2 of those formats (NTSC & PAL). Is S-VHS any different? I have seen add-on genlock products for Amiga talking about S-VHS but don't know much about that specific thing. Nor do I know what SECAM is. It *is* real-time, produces 30 frames a second (y'know, the normal 60 half frames of interlaced picture you get in NTSC). In PAL mode isn't it mostly the same, but 50 frames instead of 60 and a few more bits on the screen? Well, Amiga does that as well.. The newer versions (A3000) also work with non interlaced screens. If you're worried about getting the data *to* the screen there is lots of network connectivity available for Amiga. TCP/IP & NFS with ethernet available from at least one vendor. Novell available now-or-soon. The ARCNET physical wiring scheme, nor-or-soon. Appletalk now-or-soon. DECNET now-or-soon. etc. X11R3 (R4 now-or-soon) available over either TCP/IP or DECNET. RSN available over any conveniently available networking protocol/medium. etc. If you must stay with hardware with which you are familiar (you did say "workstation or PC") I have heard tell of some hardware. In each case the job is very difficult because -- it's tricky converting video signals from one format to another -- because there's so much data coming in & you don't have much time to convert it The end result being that just the board to convert video signals from the workstation screen to an NTSC format tend to cost more than the cost of an Amiga! -- <- David Herron, an MMDF & WIN/MHS guy, <david@twg.com> <- Formerly: David Herron -- NonResident E-Mail Hack <david@ms.uky.edu> <- <- Sign me up for one "I survived Jaka's Story" T-shirt!