Processador de mídia

Imagem ilustrativa

Um processador de mídia (do inglês media processor) é um controlador ou sistema em um chip, baseado em microprocessador, que manipula uma tarefa de processamento específica, como codificação, conversão de formato, criptografia ou descriptografia de conteúdo de mídia etc.[1] É comumente usado para construir um subsistema multimídia que processa uma combinação de operações de áudio, vídeo, gráfico, fax e modem.[2]

Também pode ser projetado para manipular dados de streaming digital em taxas em tempo real (por exemplo, atualização de exibição). Esses dispositivos também podem ser considerados uma classe de processadores de sinais digitais (DSPs).

Visão geral

Diferentemente das GPUs (unidades de processamento gráfico), usadas para monitores de computador, os processadores de mídia são direcionados para televisões digitais e decodificadores.

As classes de mídia digital de streaming incluem:

Esses SOCs são compostos de:

  • um microprocessador otimizado para manipular esses tipos de dados de mídia
  • uma interface de memória
  • interfaces de mídia de streaming
  • unidades funcionais especializadas para ajudar a lidar com os vários codecs de mídia digital

O microprocessador pode ter estas otimizações:

Antes dos processadores de mídia, esses tipos de dados de mídia de streaming eram processados ​​usando ASICs de função fixa e conectados, que não podiam ser atualizados no campo. Essa foi uma grande desvantagem quando qualquer um dos padrões de mídia foi alterado. Como os processadores de mídia são dispositivos programados por software, o processamento feito neles pode ser atualizado com as novas versões do software. Isso permitiu a criação de novas gerações de sistemas sem reprojeto de hardware. Para decodificadores, isso ainda permite a possibilidade de atualização em campo baixando o novo software através de redes a cabo ou satélite.

As empresas que foram pioneiras na idéia de processadores de mídia (e criaram o termo de marketing do processador de mídia) incluíram:

  • MicroUnity MediaProcessor - Cancelado em 1996 antes da introdução
  • IBM Mfast - Descrito no Microprocessor Forum em 1995, planejado para ser lançado em meados de 1997, mas foi cancelado antes da introdução
  • Linha BSP da Equator Semiconductor - seus processadores são usados ​​nas televisões Hitachi, empresa adquirida pela Pixelworks
  • Linha MPact da Chromatic Research - seus produtos foram usados ​​em algumas placas gráficas de PC em meados dos anos 90, empresa adquirida pela ATI Technologies
  • Linha Philips TriMedia - usada na Philips, Dell, Sony, etc. eletrônicos de consumo, a Philips Semiconductors separou-se da Philips e tornou-se NXP Semiconductors em 2006

As empresas de eletrônicos de consumo dominaram com sucesso esse mercado projetando seus próprios processadores de mídia e integrando-os aos seus produtos de vídeo. Empresas como Philips, Samsung, Matsushita, Fujitsu, Mitsubishi têm seus próprios dispositivos de processador de mídia.

As gerações mais recentes de tais dispositivos agora usam várias formas de multiprocessamento - várias CPUs ou DSPs, para lidar com as vastas necessidades computacionais ao lidar com sinais de televisão de alta definição.

Referências

  1. ↑ «Como: obter uma instância do processador de mídia». Documentação Microsoft. 18 de março de 2019. Consultado em 19 de maio de 2020 
  2. ↑ «media processor - Computer Definition». Your Dictionary. Consultado em 19 de maio de 2020 

Read other articles:

R634 road (Ireland)

Regional road in Ireland R634 roadBóthar R634Clock Gate Tower straddles Main Street, Youghal, on the R634Route informationLength28.8 km[1][2] (17.9 mi)Major junctionsFrom N25 at Ballyvergan, County CorkMajor intersections R633 at Ballyvergan East R908 at Knockavery Strand, Youghal R908 at Summerfield Cross, Youghal Enter County Waterford N25 at Rincrew R627 at Main Street, Tallow R629 at The Square, Tallow To N72 at Tallowbridge, County Waterford LocationCountr...

 

Burkina Faso

Burkina Faso Drapeau du Burkina Faso Armoiries du Burkina Faso Devise Unité, Progrès, Justice[1] Hymne Ditanyè Fête nationale 11 décembre · Événement commémoré Proclamation de la République (1958) Administration Forme de l'État Dictature militaire Président de la Transition Ibrahim Traoré Premier ministre Apollinaire Joachim Kyélem de Tambèla Parlement Assemblée législative de transition Langues officielles moré, dioula, bwamu, peul Depuis décembre 2023, le français a pe...

 

العلاقات البلجيكية البلغارية

العلاقات البلجيكية البلغارية بلجيكا بلغاريا   بلجيكا   بلغاريا تعديل مصدري - تعديل   العلاقات البلجيكية البلغارية هي العلاقات الثنائية التي تجمع بين بلجيكا وبلغاريا.[1][2][3][4][5] مقارنة بين البلدين هذه مقارنة عامة ومرجعية للدولتين: وجه المقا...

This Can't Happen Here

1950 film For other uses, see Can't Happen Here (disambiguation). This Can't Happen HereFilm posterDirected byIngmar BergmanWritten byWaldemar Brøgger (novel)Herbert GreveniusProduced byHelge HagermanStarringSigne HassoDistributed bySvensk FilmindustriRelease dates 4 June 1950 (1950-06-04) (Denmark) 23 October 1950 (1950-10-23) (Sweden) Running time84 minutesCountrySwedenLanguageSwedish This Can't Happen Here (Swedish: Sånt händer inte här, also relea...

 

The Ridge (company)

American wallet manufacturer The Ridge Wallet LLCTrade nameThe RidgeCompany typePrivateFounded2013; 11 years ago (2013)Los Angeles, CaliforniaFounder Paul Kane Daniel Kane HeadquartersSanta Monica, CaliforniaKey people Sean Frank (CEO) Connor MacDonald (CMO) Marques Brownlee (board member) ProductsWallets, mens rings, backpacks, luggage, everyday carry accessoriesWebsiteridge.com The Ridge is a wallet and everyday carry product manufacturer specializing in minimalist RFID wa...

 

PPP1R17

PPP1R17 المعرفات الأسماء المستعارة PPP1R17, C7orf16, GSBS, protein phosphatase 1 regulatory subunit 17 معرفات خارجية الوراثة المندلية البشرية عبر الإنترنت 604088 MGI: MGI:1333876 HomoloGene: 4849 GeneCards: 10842 علم الوجود الجيني الوظيفة الجزيئية • protein phosphatase inhibitor activity• protein serine/threonine phosphatase inhibitor activity• phosphatase inhibitor activity المكون�...

Sweet potato

Species of edible plant For the musical instrument sometimes called a sweet potato, see Ocarina. For the true yam, see yam (vegetable). Sweet potato Sweet potato tubers Conservation status Secure  (NatureServe)[1] Scientific classification Kingdom: Plantae Clade: Tracheophytes Clade: Angiosperms Clade: Eudicots Clade: Asterids Order: Solanales Family: Convolvulaceae Genus: Ipomoea Species: I. batatas Binomial name Ipomoea batatas(L.) Lam. The sweet potato (Ipomoea batatas) i...

 

SD Negeri Kerten II

Artikel ini sebatang kara, artinya tidak ada artikel lain yang memiliki pranala balik ke halaman ini.Bantulah menambah pranala ke artikel ini dari artikel yang berhubungan atau coba peralatan pencari pranala.Tag ini diberikan pada Maret 2016. SD Negeri Kerten IIInformasiJenisSekolah NegeriKepala SekolahAgus Cahyono, S.Pd.Rentang kelasI - VIAlamatLokasiJl. Srikatan No. 21, Kota Surakarta, Jawa Tengah,  IndonesiaMoto SD Negeri Kerten II, merupakan salah satu Sekolah Dasar negeri yang ...

 

Marking axe

Forestry tool A Norwegian timber marking axe from the 1960s. A marking axe being used by a forestry officer Marking axe or marking hatchet is a small hatchet which is used by forest workers to mark trees designated for logging or for thinning. These axes were used also for trail blazing or for marking the ends of the felled logs for identification of the owner (stamping axe). Usage A hole in the bark is first cut with the axe and then the hammer part was hit on the spot and a raised die on th...

New York University Press

University press that is part of New York University New York University PressParent companyNew York UniversityFounded1916FounderElmer Ellsworth BrownCountry of originUnited StatesHeadquarters locationNew York, New YorkDistributionIngram Publisher Services (US)[1]Combined Academic Publishers (UK)[2]Publication typesBooksOfficial websitenyupress.org New York University Press (or NYU Press) is a university press that is part of New York University. History NYU Press was founded ...

 

Education in the Philippines during Spanish rule

See also: Oldest schools in the Philippines Library of the University of Santo Tomás in Manila, 1887. Created at the request of Archbishop Miguel de Benavides, O.P. of Manila in 1610, it is the oldest existing university in Asia. The library is also the oldest in the continent. It even had its own printing press which was brought from Europe. During the Spanish colonial period in the Philippines (1521–1898), the different cultures of the archipelago experienced a gradual unification from ...

 

Enyu Todorov

Bulgarian freestyle wrestler (1943–2022) Enyu TodorovTodorov at the 1968 OlympicsPersonal informationBorn22 February 1943 (1943-02-22)Aprilovo, Stara Zagora, BulgariaDied26 May 2022 (2022-05-27) (aged 79)Sofia, BulgariaHeight1.66 m (5 ft 5 in)SportSportFreestyle wrestlingClubCSKA SofiaLevski Sofia Medal record Representing  Bulgaria Olympic Games 1968 Mexico City -63 kg European Championships 1966 Karlsruhe -62 kg 1969 Sofia -62 kg 1970 Berlin -62 kg Enyu ...

Lotfi Zadeh

Zadeh a Berkeley nel 2016 Lotfi Aliasker Zadeh (Baku, 4 febbraio 1921 – Berkeley, 6 settembre 2017[1]) è stato un ingegnere e matematico persiano naturalizzato statunitense. È noto soprattutto per i suoi lavori che segnano la nascita della teoria degli insiemi fuzzy nel 1965 (nota in italiano anche come teoria degli insiemi sfocati) e la teoria della logica fuzzy nel 1973.[2] Nato da padre giornalista iraniano di origine azera (di Ardabil) e da madre ebrea russa, cresce in...

 

1998 in the sport of athletics

1998 in athleticsMajor world eventsWorld ChampionshipsWorld Indoor ChampionshipsIAAF Athletes of the YearHaile GebrselassieMarion Jones← 1997 1999 → Overview of the events of 1998 in the sport of athletics Years in the sport of athletics ← 1995 1996 1997 1998 1999 2000 2001 → 1998 in sports Air sports American football Aquatic sports Association football Athletics Australian rules football Badminton Baseball Basketball Canadian football Chess Climbing Combat sports Sumo Cricke...

 

Chennai Sangamam

Large annual open Tamil cultural festival held in the city of Chennai This article relies excessively on references to primary sources. Please improve this article by adding secondary or tertiary sources. Find sources: Chennai Sangamam – news · newspapers · books · scholar · JSTOR (August 2020) (Learn how and when to remove this message) Koothu performance at Chennai Sangamam Chennai Sangamam (Tamil: சென்னை சங்கமம்) is a large...

Raye (chanteuse)

Cet article est une ébauche concernant une chanteuse britannique. Vous pouvez partager vos connaissances en l’améliorant (comment ?) selon les recommandations des projets correspondants. Pour les articles homonymes, voir Raye. RayeBiographieNaissance 24 octobre 1997 (26 ans)Tooting (Londres)Nom de naissance Rachel Agatha KeenPseudonyme RayeNationalité britanniqueFormation BRIT SchoolWoodcote High School (en)Activités Chanteuse, auteure-compositrice-interprète, artiste d'enre...

 

HD NVD

Cet article est une ébauche concernant l’informatique. Vous pouvez partager vos connaissances en l’améliorant (comment ?) selon les recommandations des projets correspondants. Le HD NVD (Next-generation Versatile Disc) est un format de disque optique Haute définition. Il est produit depuis le 22 janvier 2009 en Chine uniquement pour le marché national[1]. Il est lisible, tout comme le DVD ou le HD-VMD, avec un laser rouge. Il peut stocker 12 Go de données. La production d'un te...

 

Hjalmar Andersson

Swedish cross-country runner (1889–1971) Hjalmar AnderssonPersonal informationBorn13 July 1889Ljusnarsberg Municipality, SwedenDied2 November 1971 (aged 82)Insjön, SwedenHeight1.72 m (5 ft 8 in)Weight63 kg (139 lb)SportSportAthleticsEventCross-country runningClubInsjöns IF, Insjön, Leksand Medal record Representing  Sweden Olympic Games 1912 Stockholm Individual cross country 1912 Stockholm Team cross country Svensk Hjalmar Zakeus Andersson (13 July 1889 –...

Battle of Gerchsheim

Battle of the Austro-Prussian War Battle of GerchsheimPart of Austro-Prussian WarArtillery battle near Gerchsheim on July 25, 1866DateJuly 25, 1866LocationGerchsheim, Baden49°41′11.00″N 9°47′2.00″E / 49.6863889°N 9.7838889°E / 49.6863889; 9.7838889Result Prussian Alliance victoryBelligerents  Prussia Oldenburg[1]  Austrian Empire Baden Württemberg Hesse-Darmstadt NassauCommanders and leaders Edwin von Manteuffel A...

 

ديواين روبرتسون

هذه المقالة يتيمة إذ تصل إليها مقالات أخرى قليلة جدًا. فضلًا، ساعد بإضافة وصلة إليها في مقالات متعلقة بها. (يوليو 2019) ديواين روبرتسون   معلومات شخصية الميلاد 16 أكتوبر 1981 (43 سنة)  ممفيس  مواطنة الولايات المتحدة  الطول 73 بوصة  الوزن 317 رطل  الحياة العملية المهنة ل�...