Question for practicising engineers

Started by Anonymous in comp.dsp8 months ago 4 replies

who design electronic products. I expect you are well aware of the price you can buy ready-made modules to do all manner of things from China or...

who design electronic products. I expect you are well aware of the price you can buy ready-made modules to do all manner of things from China or other far east countries. How is it possible to survive nowadays with such competition. I realise not all of the stuff is quality of course but some are more than satisfactory. I recently saw a composite video to HDMI convertor and know a f


Connecting DM642 EVM board to the PC

Started by julianoys in comp.dsp14 years ago 4 replies

Hi Everybody!!! Just got a new kit from Spectrum Digital with TMS320DM642 chip... model TMDSEVM642 with TVP Video Decoders... (EVMDM642 - 720...

Hi Everybody!!! Just got a new kit from Spectrum Digital with TMS320DM642 chip... model TMDSEVM642 with TVP Video Decoders... (EVMDM642 - 720 MHz version) and I have some doubts about plugging it into the PC... First: what exactly is JTAG? what is it for? what I understood is the following: I need a JTAG emulator to use the board with pc (like this one: http://emulators.spectrumdigital.com/...


OT? A peak into Scandinavian office life...

Started by Rune Allnor in comp.dsp11 years ago 8 replies

Everybody, Here's something a Danish colleague sent...

Everybody, Here's something a Danish colleague sent me: http://www.jobzonen.dk/For%20jobsoegere/Kollegatesten.aspx?csref=kam_03_13_08_ba_jzforside_170x2 40_kollegatest This is a test of your 'colleagual' skills. The test contains some video with no spoken language, and some questions and multiple-choise answers in Danish. Below I have done my best to translate the Q&A to English, so


Advise me for learning MUD techniques

Started by Communications_engineer in comp.dsp10 years ago

Hello, I am trying to learn Multiuser detection techniques for CDMA and then OFDMA and maybe even beyond that for SCFDMA and so on. I'm a...

Hello, I am trying to learn Multiuser detection techniques for CDMA and then OFDMA and maybe even beyond that for SCFDMA and so on. I'm a beginner, so I know that I should build up some concepts before attempting to go to the real thing. So any advise? Also are there some good video lectures on these topics, that you know about? I find it difficult to properly understand Verdu's book,...


Sensitivity function - control theory

Started by Anonymous in comp.dsp2 years ago 4 replies

I watched this video about the sensitivity function, highly instructive, but at around 9 minutes, the author says that the maximum of the...

I watched this video about the sensitivity function, highly instructive, but at around 9 minutes, the author says that the maximum of the sensitivity function should be between 1.3 and 2. https://www.youtube.com/watch?v=BAWdZvF1O40 What's wrong with having a sensitivity less than 1.3 ? Regards


TI DSK

Started by jerome in comp.dsp15 years ago 3 replies

Hi all, I want to work on TI DSPs and plan to buy one of the TI's DSK. Could someone give me advices on the various DSK sold buy TI? What is...

Hi all, I want to work on TI DSPs and plan to buy one of the TI's DSK. Could someone give me advices on the various DSK sold buy TI? What is better for video and image processing algorithms? I wonder what to choose btwn C6416 or C6713. Does anyone belong or use one? any info or recommendations? Could you tell me about the daughter board ports? What are the signals accessible by the...


JTAG Emulator for Video Processing

Started by Mariano I Lizarraga in comp.dsp16 years ago 1 reply

Hello all of you DSP Experts, I will soon be buying the DSP TI imaging devolopers kit but I saw on a webinar that TI has posted on its website...

Hello all of you DSP Experts, I will soon be buying the DSP TI imaging devolopers kit but I saw on a webinar that TI has posted on its website that a device called "JTAG Emulator" is used, I have not been able to find on the web a complete explanation of what that is or why is it useful; any help would be greatly appreciated. Thanks Mariano


problem using ACPY3

Started by Anonymous in comp.dsp11 years ago 1 reply

hi, all: i',m packaging an video decode algorithm using XDAIS on davinci, and i have successfully packaged it without DMA. i'm using codec...

hi, all: i',m packaging an video decode algorithm using XDAIS on davinci, and i have successfully packaged it without DMA. i'm using codec enging 1.02 and xdais 5.00. i followd the example in codec_enging1.02/codecs/viddec_copy, and the videnc_copy example to add DMA functions, i wander if there are someone that have the same experience using ACPY3, i want to ask some questions. thanks...


Verification of the following formula

Started by sia4uin in comp.dsp4 years ago 12 replies

Hello All, Me again! I came across the following formula to calculate pitch from accelerometer signals. pitch = atan2(Ay,...

Hello All, Me again! I came across the following formula to calculate pitch from accelerometer signals. pitch = atan2(Ay, sqrt(Ax^2+Az^2)) Is this correct? Now a slightly complicated stuff. Found this video and it is very interesting and of course it is not for novices like me. https://youtu.be/C7JQ7Rpwn2k?t=1415 How does he obtain Gravity to obtain Linear acceleration? ...


How to interface DM642 Video port to SAA7105 ?

Started by Anonymous in comp.dsp14 years ago 2 replies

I want to using SAA7105 as TMS320DM642 VGA display port. How to connect the DM642's STCLK,VPxCLK0,VPxCLK1,VPxCTL0,VPxCTL1,VPxCTL2 to...

I want to using SAA7105 as TMS320DM642 VGA display port. How to connect the DM642's STCLK,VPxCLK0,VPxCLK1,VPxCTL0,VPxCTL1,VPxCTL2 to SAA7105's PIXCLKI,PIXCLKO,FSVGC,HSVGC,VSVGC ? Thanks a lot!!!


electrical scheme

Started by Dmitry in comp.dsp13 years ago 6 replies

Hello. I'm going to develop own electrical scheme on base of the TMS320C6713(300) to realize system of the video processing. Does anybody know...

Hello. I'm going to develop own electrical scheme on base of the TMS320C6713(300) to realize system of the video processing. Does anybody know when i can find in internet examples of the electrical schemes on base of the same processors? It need for me to get alternative ideas. My email is in_spb3@yahoo.com Thanks, Dmitry.


60 GHZ uncompressed transmission

Started by fawzy in comp.dsp10 years ago 9 replies

Dear Sir; A new technique in a multimedia transmission is transmitting a video without compression on 60 GHZ unlicensed band. It uses image...

Dear Sir; A new technique in a multimedia transmission is transmitting a video without compression on 60 GHZ unlicensed band. It uses image partitioning. I need some information about this image partitioning. Regards Eng. Fawzy


DSP Applications Eng opening

Started by Anonymous in comp.dsp13 years ago 1 reply

I have an opening for a DSP Applications Eng for a major FPGA company in San Jose. We are looking for someone with extensive Video...

I have an opening for a DSP Applications Eng for a major FPGA company in San Jose. We are looking for someone with extensive Video imaging experience. If interested, please send resume to altie.ginn@gmail.com Thanks!


Re: Why is video inverted for transmission?

Started by ChairmanOfTheBored in comp.dsp12 years ago 3 replies

On Sun, 23 Sep 2007 16:41:17 -0700, Joerg wrote: > And then the moment of truth cometh. I am a bit concerned that the > chosen system...

On Sun, 23 Sep 2007 16:41:17 -0700, Joerg wrote: > And then the moment of truth cometh. I am a bit concerned that the > chosen system could waffle under really strong multipath conditions like > where we live. Digital transmission do NOT suffer, in ANY WAY, SHAPE, OR FORM, from multipath distortions!


Nexperia

Started by jajo in comp.dsp12 years ago 1 reply

Hi, [1] I would like to get the 'instruction set reference' of a NXP 1300/1500 or 1700 processor. Where/How/Who can I get it? [2] I would...

Hi, [1] I would like to get the 'instruction set reference' of a NXP 1300/1500 or 1700 processor. Where/How/Who can I get it? [2] I would like to get any additional information about Nexperia, any idea? (At this moment, I have the pdf files located in the NXP web page but I need opinions about Nexperia processors and examples of use related to audio/video processing with Nexperia) Tha...


DCT

Started by BenRavin in comp.dsp13 years ago 3 replies

Hi, I am looking for some technical information rgarding DCT. Why DCT is used in image/video/audio instead of transform like FFT?...

Hi, I am looking for some technical information rgarding DCT. Why DCT is used in image/video/audio instead of transform like FFT? What information we get after taking a DCT? Is DCT just the real part of FFT? Please send me some info regarding this. Thanking you


Fusion

Started by Randy Yates in comp.dsp12 years ago 1 reply

Has anyone heard Dr. Robert Bussard's Google talk on fusion? http://video.google.com/videoplay?docid=1996321846673788606 He claims that...

Has anyone heard Dr. Robert Bussard's Google talk on fusion? http://video.google.com/videoplay?docid=1996321846673788606 He claims that EMC2's last 12 years' research for the U.S. Navy have led them to a design that actually works. I would be interested to see what some of the fine minds here on ocmp.dsp think of his work and his claims. -- % Randy Yates % "My S...


TI DSP

Started by geoffrey wall in comp.dsp15 years ago 1 reply

Has anyone done any development with TI's TMS320C6000 series of dsp uP boards? Are the development tools any good? Buggy at all? I am...

Has anyone done any development with TI's TMS320C6000 series of dsp uP boards? Are the development tools any good? Buggy at all? I am interested in doing real time video processing using multiple filters and image histogram equalizations. I may need to develope a multi-processor solution... Do any of the Development tools TI have support for this sort of thing? GW


Rate-distortion optimisation

Started by stephen henry in comp.dsp15 years ago 1 reply

Hi all, Could someone please help me figure out how to use rate-distortion optimisation? I'm working on a video codec at the moment and,...

Hi all, Could someone please help me figure out how to use rate-distortion optimisation? I'm working on a video codec at the moment and, from what I understand, the modes on encoding are decided on the sum-of-absolute-difference (SAD) value, which is effectively a measure of the distortion, and the number of bits required to encode the residual. These two values are summed, one being we...


Best choice for EMG signal processing

Started by maestro in comp.dsp10 years ago 4 replies

Searching for a DSK at the Texas site, I've noticed that some kits are available with audio ports and audio codecs, while some DSPs are...

Searching for a DSK at the Texas site, I've noticed that some kits are available with audio ports and audio codecs, while some DSPs are used mainly for video applications. I'd like to use a DSK that is less "guided". Any suggestions? My application processing requirements are not defined yet, but the signal must be sampled at least at 10kHz. Thank you,