Pub Date : 1995-03-05DOI: 10.1109/CMPCON.1995.512384
R. Lee
This paper describes the first software implementation of an MPEG video decoder that runs at realtime rates of 30 frames per second, on a general purpose microprocessor. Previously, realtime MPEG decoding could only be achieved by using special-purpose MPEG or video chips, with "programmability" either nonexistent or limited to low-level firmware. In this paper, we describe how synergistic software and hardware optimizations allow us to implement realtime, high-fidelity MPEG video and audio decompression in a software video player written in C, running on a PA-RISC microprocessor in the entry-level HP712 workstations. The PA-7100LC microprocessor described here is a fully-compliant PA-RISC 1.1 general purpose processor with a few generic instructions added to speedup parallel arithmetic on subword (16-bit) data.
{"title":"Realtime MPEG video via software decompression on a PA-RISC processor","authors":"R. Lee","doi":"10.1109/CMPCON.1995.512384","DOIUrl":"https://doi.org/10.1109/CMPCON.1995.512384","url":null,"abstract":"This paper describes the first software implementation of an MPEG video decoder that runs at realtime rates of 30 frames per second, on a general purpose microprocessor. Previously, realtime MPEG decoding could only be achieved by using special-purpose MPEG or video chips, with \"programmability\" either nonexistent or limited to low-level firmware. In this paper, we describe how synergistic software and hardware optimizations allow us to implement realtime, high-fidelity MPEG video and audio decompression in a software video player written in C, running on a PA-RISC microprocessor in the entry-level HP712 workstations. The PA-7100LC microprocessor described here is a fully-compliant PA-RISC 1.1 general purpose processor with a few generic instructions added to speedup parallel arithmetic on subword (16-bit) data.","PeriodicalId":415918,"journal":{"name":"Digest of Papers. COMPCON'95. Technologies for the Information Superhighway","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114493752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1995-03-05DOI: 10.1109/CMPCON.1995.512423
Leslie Kohn, G. Maturana, M. Tremblay, A. Prabhu, G. Zyner
This paper describes the visual instruction set (VIS). This is a RISC-like extension to the SPARC V9 instruction set that provides core instructions that greatly enhance the graphics and image processing capabilities of SPARC processors. VIS's first implementation is in the new UltraSPARC microprocessor.
{"title":"The visual instruction set (VIS) in UltraSPARC","authors":"Leslie Kohn, G. Maturana, M. Tremblay, A. Prabhu, G. Zyner","doi":"10.1109/CMPCON.1995.512423","DOIUrl":"https://doi.org/10.1109/CMPCON.1995.512423","url":null,"abstract":"This paper describes the visual instruction set (VIS). This is a RISC-like extension to the SPARC V9 instruction set that provides core instructions that greatly enhance the graphics and image processing capabilities of SPARC processors. VIS's first implementation is in the new UltraSPARC microprocessor.","PeriodicalId":415918,"journal":{"name":"Digest of Papers. COMPCON'95. Technologies for the Information Superhighway","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114158519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1995-03-05DOI: 10.1109/CMPCON.1995.512419
Dave Low
Compound data objects and distributed computational environments pose interesting storage management challenges. EMC is investigating a variety of approaches to meet these challenges, among which are object oriented models for archive/retrieve and backup/restore operations. This paper describes a model which is aligned with standards being developed by the OMG and X/Open. We propose that, in conjunction with innovative storage system design, such a model can lead to centralized storage management services for compound objects in a distributed environment.
{"title":"An object oriented model for distributed backup and archive","authors":"Dave Low","doi":"10.1109/CMPCON.1995.512419","DOIUrl":"https://doi.org/10.1109/CMPCON.1995.512419","url":null,"abstract":"Compound data objects and distributed computational environments pose interesting storage management challenges. EMC is investigating a variety of approaches to meet these challenges, among which are object oriented models for archive/retrieve and backup/restore operations. This paper describes a model which is aligned with standards being developed by the OMG and X/Open. We propose that, in conjunction with innovative storage system design, such a model can lead to centralized storage management services for compound objects in a distributed environment.","PeriodicalId":415918,"journal":{"name":"Digest of Papers. COMPCON'95. Technologies for the Information Superhighway","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116858169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1995-03-05DOI: 10.1109/CMPCON.1995.512357
T. Yan, J. Annevelink
Wide-area information sharing is rapidly gaining momentum. However, current information systems provide inadequate functionality for users to efficiently and effectively search and use the information made available. Users are faced with a vast information space apparently in disarray. Assuming current client-server information system architecture, we argue in this paper that more functionality is needed on the information client side. We describe an information client prototype that supports (1) the use of object technology to model the information space, (2) declarative querying as a complement to navigational search, (3) uniform access and integration of data from diverse sources, and (4) user-specified and transparent caching that is integrated with permanent local storage of remote data. We also identify the needed support from the server side to better achieve these capabilities.
{"title":"A powerful wide-area information client","authors":"T. Yan, J. Annevelink","doi":"10.1109/CMPCON.1995.512357","DOIUrl":"https://doi.org/10.1109/CMPCON.1995.512357","url":null,"abstract":"Wide-area information sharing is rapidly gaining momentum. However, current information systems provide inadequate functionality for users to efficiently and effectively search and use the information made available. Users are faced with a vast information space apparently in disarray. Assuming current client-server information system architecture, we argue in this paper that more functionality is needed on the information client side. We describe an information client prototype that supports (1) the use of object technology to model the information space, (2) declarative querying as a complement to navigational search, (3) uniform access and integration of data from diverse sources, and (4) user-specified and transparent caching that is integrated with permanent local storage of remote data. We also identify the needed support from the server side to better achieve these capabilities.","PeriodicalId":415918,"journal":{"name":"Digest of Papers. COMPCON'95. Technologies for the Information Superhighway","volume":"236 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116867873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1995-03-05DOI: 10.1109/CMPCON.1995.512369
J. Zurawski, J. Murray, Paul J. Lemmon
The AlphaStation 800 5/300 workstation (Alcor) is a high-performance, system using the DECchip 21164 Alpha AXP microprocessor. A crossbar switch implemented in CMOS ASICs provides high-bandwidth, low-latency interconnects between the CPU, main memory and the I/0 subsystem. This paper describes the design of the Alcor system.
{"title":"The design of the AlphaStation 800 5/300 workstation","authors":"J. Zurawski, J. Murray, Paul J. Lemmon","doi":"10.1109/CMPCON.1995.512369","DOIUrl":"https://doi.org/10.1109/CMPCON.1995.512369","url":null,"abstract":"The AlphaStation 800 5/300 workstation (Alcor) is a high-performance, system using the DECchip 21164 Alpha AXP microprocessor. A crossbar switch implemented in CMOS ASICs provides high-bandwidth, low-latency interconnects between the CPU, main memory and the I/0 subsystem. This paper describes the design of the Alcor system.","PeriodicalId":415918,"journal":{"name":"Digest of Papers. COMPCON'95. Technologies for the Information Superhighway","volume":"186 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116144510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1995-03-05DOI: 10.1109/CMPCON.1995.512396
D. Chang, D. Lyon, Charles Chen, Leon Peng, M. Massoumi, M. Hakimi, Satish Iyengar, Ellen Li, Roque Remedios
This paper discusses the architecture and implementation of HaL's 64-bit memory management unit (MMU). The MMU is responsible for virtual-to-physical address translations, data movement controls, bus interfaces among CPU/caches, memory subsystems; and I/O systems; and maintaining memory coherency among caches and memories.
{"title":"Microarchitecture of HaL's memory management unit","authors":"D. Chang, D. Lyon, Charles Chen, Leon Peng, M. Massoumi, M. Hakimi, Satish Iyengar, Ellen Li, Roque Remedios","doi":"10.1109/CMPCON.1995.512396","DOIUrl":"https://doi.org/10.1109/CMPCON.1995.512396","url":null,"abstract":"This paper discusses the architecture and implementation of HaL's 64-bit memory management unit (MMU). The MMU is responsible for virtual-to-physical address translations, data movement controls, bus interfaces among CPU/caches, memory subsystems; and I/O systems; and maintaining memory coherency among caches and memories.","PeriodicalId":415918,"journal":{"name":"Digest of Papers. COMPCON'95. Technologies for the Information Superhighway","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116210428","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1995-03-05DOI: 10.1109/CMPCON.1995.512367
L. Bergman
This paper will examine the application of the NASA advanced communications technology satellite (ACTS) for implementing a distributed supercomputer global climate model, and in remote observation and control of the Keck telescope in Hawaii.
{"title":"Gigabit satellites in distributed supercomputing for global research","authors":"L. Bergman","doi":"10.1109/CMPCON.1995.512367","DOIUrl":"https://doi.org/10.1109/CMPCON.1995.512367","url":null,"abstract":"This paper will examine the application of the NASA advanced communications technology satellite (ACTS) for implementing a distributed supercomputer global climate model, and in remote observation and control of the Keck telescope in Hawaii.","PeriodicalId":415918,"journal":{"name":"Digest of Papers. COMPCON'95. Technologies for the Information Superhighway","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122368904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1995-03-05DOI: 10.1109/CMPCON.1995.512380
A. Burstein, A. Long, S. Narayanaswamy, Richard Han, R. Brodersen
We have shown a prototype user interface for the InfoPad, a portable terminal with multi-modal input and multimedia output. The InfoPad's main features are: portability, continuous network connectivity using a high-bandwidth radio link, pen input with handwriting recognition, audio input with speech recognition, full-motion video playback with synchronized audio, text/graphics display. The InfoPad's unique input and output characteristics offer challenges and opportunities for user interface design. We have implemented an API for network access to audio, pen, graphics, and video data; we have also implemented speech and handwriting recognizers along with programming interfaces and toolkits. We are prototyping applications and user interfaces to explore how handwriting and voice recognition may best be used together. We believe that the lessons we will learn can be applied to other multi-modal platforms.
{"title":"The InfoPad user interface","authors":"A. Burstein, A. Long, S. Narayanaswamy, Richard Han, R. Brodersen","doi":"10.1109/CMPCON.1995.512380","DOIUrl":"https://doi.org/10.1109/CMPCON.1995.512380","url":null,"abstract":"We have shown a prototype user interface for the InfoPad, a portable terminal with multi-modal input and multimedia output. The InfoPad's main features are: portability, continuous network connectivity using a high-bandwidth radio link, pen input with handwriting recognition, audio input with speech recognition, full-motion video playback with synchronized audio, text/graphics display. The InfoPad's unique input and output characteristics offer challenges and opportunities for user interface design. We have implemented an API for network access to audio, pen, graphics, and video data; we have also implemented speech and handwriting recognizers along with programming interfaces and toolkits. We are prototyping applications and user interfaces to explore how handwriting and voice recognition may best be used together. We believe that the lessons we will learn can be applied to other multi-modal platforms.","PeriodicalId":415918,"journal":{"name":"Digest of Papers. COMPCON'95. Technologies for the Information Superhighway","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127758165","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1995-03-05DOI: 10.1109/CMPCON.1995.512383
J. Beck, Francis Sung, K. Severson
One of today's most exciting multimedia applications is the integration of video conferencing technology into the desktop computing environment. This technology has its roots in the telecommunications industry and its use in the desktop systems has created some interesting technical challenges. This paper explores limitations with traditional approaches to video conferencing and then introduces an object based approach which leverages built-in platform functionality. If utilizes a mostly software strategy along with the creation of a digital compression camera. The camera integrates video compression hardware with the optics and attaches to existing systems over a pervasive interface. The result is interoperable, standards based video conferencing at dramatically lower price points.
{"title":"An object based architecture for a digital compression camera","authors":"J. Beck, Francis Sung, K. Severson","doi":"10.1109/CMPCON.1995.512383","DOIUrl":"https://doi.org/10.1109/CMPCON.1995.512383","url":null,"abstract":"One of today's most exciting multimedia applications is the integration of video conferencing technology into the desktop computing environment. This technology has its roots in the telecommunications industry and its use in the desktop systems has created some interesting technical challenges. This paper explores limitations with traditional approaches to video conferencing and then introduces an object based approach which leverages built-in platform functionality. If utilizes a mostly software strategy along with the creation of a digital compression camera. The camera integrates video compression hardware with the optics and attaches to existing systems over a pervasive interface. The result is interoperable, standards based video conferencing at dramatically lower price points.","PeriodicalId":415918,"journal":{"name":"Digest of Papers. COMPCON'95. Technologies for the Information Superhighway","volume":"143 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121420953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1995-03-05DOI: 10.1109/CMPCON.1995.512427
P. Cummings
Lotus Development Corporation and AT&T have formed a strategic alliance to create AT&T Network Notes. Network Notes combines Lotus Notes, the leading business collaborative software, with the sophisticated communications and service capabilities of the AT&T worldwide intelligent network. The goal is for Network Notes to become a global "Internet of Notes Networks", with tremendous value-added service provided by the carrier via replication management, intelligent agents, and world wide on-line connectivity for Notes clients.
{"title":"Enhancing Lotus Notes for carrier grade hosting","authors":"P. Cummings","doi":"10.1109/CMPCON.1995.512427","DOIUrl":"https://doi.org/10.1109/CMPCON.1995.512427","url":null,"abstract":"Lotus Development Corporation and AT&T have formed a strategic alliance to create AT&T Network Notes. Network Notes combines Lotus Notes, the leading business collaborative software, with the sophisticated communications and service capabilities of the AT&T worldwide intelligent network. The goal is for Network Notes to become a global \"Internet of Notes Networks\", with tremendous value-added service provided by the carrier via replication management, intelligent agents, and world wide on-line connectivity for Notes clients.","PeriodicalId":415918,"journal":{"name":"Digest of Papers. COMPCON'95. Technologies for the Information Superhighway","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131713715","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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