Author Topic: MCU for DVD/Players???? (Read 2301 times)

qwertyu44 · « **on:** February 17, 2009, 04:07:18 PM »

what specific MCU or PIC should be used for a dvdplayer or any video players?

please help

Philippine Electronics Forum · « **on:** February 17, 2009, 04:07:18 PM »

rdpzycho · « **Reply #1 on:** February 17, 2009, 08:58:40 PM »

gagawa kayo ng video player?

ARM9 family or some special MCU designed for MPEG decoders. basically, somewhere around 200MHz MCU (actually MPU na 'to dahil hindi na internal ang memory), and 32-bit processing. kung mas mababa pa ang speed, dapat fully optimized ang algorithms.

'yung iba FPGA's naman ang gamit, tapos sa mass production ASIC na.

Philippine Electronics Forum · « **Reply #1 on:** February 17, 2009, 08:58:40 PM »

qwertyu44 · « **Reply #2 on:** February 20, 2009, 11:39:51 AM »

tnx alot
so mpu ang gagamitin nmin??? (mircro Processor unit?

) ARM9???
bakit 200MHz

yup! gagawa kami ng video player. thesis namin

meron k b marerecomend n specific mpu???
senxa n wla p kac aq maxdo idea d2..

Philippine Electronics Forum · « **Reply #2 on:** February 20, 2009, 11:39:51 AM »

rdpzycho · « **Reply #3 on:** February 20, 2009, 11:45:45 AM »

basahin niyo muna kung paano dine-decode ang MPEG at kung gaano kabilis 'to dapat i-decode. search niyo rin sa net kung may hobbyist project nito and mostly you'll find they are using FPGA, at hindi compressed video (puro bitmaps lang talaga).

decoding MPEG takes a alot of knowledge in DSP and Math. start first with JPEG.

kung wala pa kayong idea dito at maigsi lang ang time niyo, I'd suggest that you change your thesis (kung video player ang thesis niyo). this will require thousands of lines of code, good understanding of Computer Architecture (kailangan nito ng malaking RAM, hundredfold to thousandfold ng laman ng basic MCU's na pinag-aaralan sa school), and good understanding of Signal Processing.

Philippine Electronics Forum · « **Reply #3 on:** February 20, 2009, 11:45:45 AM »

qwertyu44 · « **Reply #4 on:** February 21, 2009, 12:07:41 AM »

actually we have 1yr 4 dis thesis
pero kelangan muna idefend ang chapters 1-3
so i need a little idea about this topic
can u atleast give me an idea of what specific mpu/fpga that are commonly used for a video player?
tnx

Philippine Electronics Forum · « **Reply #4 on:** February 21, 2009, 12:07:41 AM »

rdpzycho · « **Reply #5 on:** February 21, 2009, 01:10:35 AM »

seryoso ba kayo dito?

eto isa, STE5588 from ST Microelectronics, based on their 32-bit ST20 core.

SDRAM needed by these devices typically run from 32Mbit to 128Mbit. requires knowledge of the DVD drive interfacing.

then kailangan niyo rin mag-aral ng embedded OS.

to be honest, it takes a group of well experienced engineer a lot of time in designing these kind of devices. if you'll start from scratch (zero knowledge in embedded OS, zero knowledge in MPEG decoding, zero knowledge in Video standards, zero knowledge on multilayer high speed PCB design, etc.), it will take you more than a year to develop this. maghanap na lang kayo ng mas simpleng solution kung kailangan niyo talaga ng DVD/video player.

pwede rin siguro ang ARM7 na merong MMU, at ARM9. sa ARM7 wala akong specific MCU in mind, sa ARM9, EP9302 ng Cirrus Logic, pwede siguro. check niyo na lang sa site ng ucLinux kung anong processor ang kayang magpaandar ng ucLinux.

danny · « **Reply #6 on:** February 21, 2009, 07:14:52 AM »

wow dvd player for a thesis. hmmm
mahirap ito, this is not gonna be an easy task
tama si sir rd nde iisang engineer ang makakagawa nito
and also needs lots of experience sa field hehehe

ajak · « **Reply #7 on:** February 21, 2009, 07:19:36 AM »

papano sir ung mg gumagawa ng pekeng dvd/china made, maraming engineers din ba gumagawa dun?

danny · « **Reply #8 on:** February 21, 2009, 07:24:25 AM »

yup. nde lang iisa engineer ng mga ito.
yung sa mga nabisita ko na vendor
usually mga 3 to 5 engineers sa isang project
depende sa laki ng project

rdpzycho · « **Reply #9 on:** February 21, 2009, 09:48:17 AM »

Quote from: ajak on February 21, 2009, 07:19:36 AM

papano sir ung mg gumagawa ng pekeng dvd/china made, maraming engineers din ba gumagawa dun?

pero 'yung iba kopya lang ng program/ASIC ng iba, tapos papalitan ng title screen.

toasted siopao · « **Reply #10 on:** February 21, 2009, 09:51:29 AM »

Quote from: rdpzycho on February 21, 2009, 09:48:17 AM

pero 'yung iba kopya lang ng program/ASIC ng iba, tapos papalitan ng title screen.

Mas madali mangopya ng IC kaysa magdesign from scratch hehehhee...

Di ba ito ang gawain ng **** *** Design? Design kuno, baka kopya ibig nilang sabihin.

rdpzycho · « **Reply #11 on:** February 21, 2009, 09:55:22 AM »

hehehe. 90% ata ang kopya, pero may design din talaga sa ibang divisions.

toasted siopao · « **Reply #12 on:** February 21, 2009, 09:57:51 AM »

Ang ok lang dun ay yung tsinita na secretary ata yun. Yummy!

rdpzycho · « **Reply #13 on:** February 21, 2009, 09:59:20 AM »

hindi na sila nagpapadala sa Japan ngayon. masaya kapag napapadala sa Japan, gimik almost every night, sagot ng mga Japanese counterpart.

toasted siopao · « **Reply #14 on:** February 21, 2009, 10:01:18 AM »

Ay oo, mahilig pa naman ang mga hapon sa gimik, mga perverts pa! Huwahahaha! Off topic na, kakahiya sa TS.

qwertyu44 · « **Reply #15 on:** February 23, 2009, 02:56:10 PM »

bakit may hapon n s usapan? hehe

Quote from: rdpzycho on February 21, 2009, 09:48:17 AM

pero 'yung iba kopya lang ng program/ASIC ng iba, tapos papalitan ng title screen.

pede b un kokopyahin nlng ang program ng iba?? gud idea hehe

meron nlng kaming 1weak pra magdefense. hindi daw pede gumamit ng microprocessor kelangan daw mcu gagamitin namin!
so ARM9 family ang gagamitin namin or ung STE5588 from ST Microelectronics, e2 ung mga cnuggest ni rdpzycho.
any suggestions?? pls

rdpzycho · « **Reply #16 on:** February 23, 2009, 04:49:28 PM »

microprocessor din 'yang mga 'yan. kailangan kasi ng megabits of RAM para mag-decode ng video. ang microcontroller, maliliit lang ang RAM.

e.novacek · « **Reply #17 on:** February 23, 2009, 05:05:37 PM »

it is not suggested for newbies to tackle 32bitters.. i suggest to stick on 16/24bits for undergraduate thesis or projects but for taking up masters degree the scenario is different especially for people who are working with embedded projects with past and present experience..

but for the MCU suggestion.. i would rather select the BlackFin processor which is enough for prototyping purposes of your project.. but if you want a more powerful processor then the TigerSHARC is indeed the "dark-horse" who can check-mate the job..

Boylestad · « **Reply #18 on:** February 23, 2009, 05:45:35 PM »

Quote from: qwertyu44 on February 23, 2009, 02:56:10 PM

hindi daw pede gumamit ng microprocessor kelangan daw mcu gagamitin namin!

minsan kasi ang mga instructor mga know it all kuno
ipipilit yun imposible sa timeframe ... with all the bells and whistles pa

hayyy

rdpzycho · « **Reply #19 on:** February 23, 2009, 07:15:21 PM »

Quote from: e.novacek on February 23, 2009, 05:05:37 PM

but for the MCU suggestion.. i would rather select the BlackFin processor which is enough for prototyping purposes of your project.. but if you want a more powerful processor then the TigerSHARC is indeed the "dark-horse" who can check-mate the job..

gusto ko rin pag-aralan 'yan, mas mahirap lang maghanap ng tutorial for noobs.

masyado ng advance.

Philippine Electronics Forum · « **Reply #19 on:** February 23, 2009, 07:15:21 PM »

Author Topic: MCU for DVD/Players???? (Read 2301 times)

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