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Article #3Protocol of Picturetel camera
From: Bernhard Roth
Date: Fri, 28 Sep 2001 12:08
Date: Fri, 28 Sep 2001 12:08
55 lines
3571 bytes
3571 bytes
Hi ! From an old PictureTel 4000 series system I could get the very nice camera module. This module has many features like as automatic zoom, autofocus and so on. I have got the pinout of the camera connector and there is a serial interface. But I have absolutely no idea about the commands/protocol the camera is using. To find out anyting, I wrote a little brute-force program which is sending many byte-combinations at several baud-rate, parity- and stop-bit configurations. Here are the things I found out : - Baud-Rate 9600, 8, O, 1 or 9600, 8, N, 1 - A command seem to start with #2 and end with #4 - On some commands the camera returns #2lirc#4 (error code ??) Unfortunately the camera is rebooting on several byte-combinations so the test with the brute-force program isn't easy... The camera is using a 80C32 as main processor. I have the content of the EPROM available. If anybody can do anything with the binary-code, I can send it to him. UltraEdit shows me some strings in this binary-image so there seem to be a menu (see attachement). Do anyone know this protocol ? Is it perhaps a standard-protocol ? Thanks !!!! Sincerly, Bernhard Roth ********************* Here are some strings which can be found in the binary-image : lrd0110V3 - Indoor [ ]0kazo(lrd0102TCamera White Balance Adjust Menulrd1116T ckr�kio070 ckr�kpl070+lrd0206U3 - Iris (Auto/Close/Open) [ ] [ ]lrd0108U1 - Auto [ ]lrd0111V4 - Outdoor [ ]lqWlqR+lrd0205U2 - Focus (Auto/Delay) [ ] [ ]mavBrdckg00s0katulqlmavBcuckg01slrd0114TIn the Iris option,ckg02slrd0115Tuse tilt arrow keyslqSckg03slrd0116Tto set iris manually.lad#lrd0105TUndefined Number, Try Againloalrd0301TEnter Number+lrd0206V3 - Iris (Auto/Close/Open) [ ] [ ]lrd0108V1 - Auto [ ]ckp�kprlrd2203TCMD STATUSlrd0114TPress MENU to exit ckr�ktd070 mfmfBaEaKldd lrd__03T* lopl TPress a DISPLAY/SEND key for camera.lc�a&lrd0303U lctpckp�kiockp�kpllirc.lrd0103TPoint the Camera at a White background.+lrd0105TPress 1-4 to select, 5 for default.lzrlossliralrd0104TPress ZOOM IN.mfm0Flrd0105TPress ENTER When ready. mfmcCcFcJlrd0107TPress MENU to cancel. mfmhAhKhJ-lrd0109T***Mode is reset to Auto on Power up.ckt�kwckc�kicmfmhAaKlde_mbwtckp�ktdckd��ckd�� mfmcCcGcJlas_Copyright (C) PictureTel Corporation, 1990
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X-Google-Language: ENGLISH,ASCII X-Google-Thread: 10963c,8e2659606704d7a4,start X-Google-Attributes: gid10963c,public X-Google-Thread: ffa71,8e2659606704d7a4,start X-Google-Attributes: gidffa71,public X-Google-Thread: 101647,8e2659606704d7a4,start X-Google-Attributes: gid101647,public X-Google-ArrivalTime: 2001-09-28 05:21:41 PST Path: arc1-ca.pugleaf.net!archiver1.google.com!news1.google.com!newsfeed.stanford.edu!newsfeed.berkeley.edu!ucberkeley!news-FFM2.ecrc.net!news1.transmedia.de!not-for-mail From: "Bernhard Roth" <Bernhard.Roth@pwrnet.de> Newsgroups: aus.comms.videocon,comp.dcom.videoconf,comp.protocols.misc Subject: Protocol of Picturetel camera Date: Fri, 28 Sep 2001 14:08:26 +0200 Organization: TRANSMEDIA GmbH Lines: 58 Message-ID: <9p1lps$6rg$1@news1.transmedia.de> NNTP-Posting-Host: firewall.pwrnet.de X-Trace: news1.transmedia.de 1001675388 7024 212.99.128.194 (28 Sep 2001 11:09:48 GMT) X-Complaints-To: usenet@news1.transmedia.de NNTP-Posting-Date: Fri, 28 Sep 2001 11:09:48 +0000 (UTC) X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 5.50.4807.1700 X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4807.1700