Option topic 4: Multimedia systems
Timing and resources
Time: 5 weeks
Syllabus: pages 56–59 Section 9.4.4
Software/course specifications: pages 11–12, 13–14, 15
Text: Heinemann IPT HSC—G. K. Powers (chapter 7)
H1.1Applies an understanding of the nature and function of information technologies to a specific practical situation
H1.2Explains and justifies the way in which information systems relate to information processes in a specific context
H2.1Analyses and describes a system in terms of the information processes involved
H2.2Develops solutions for an identified need which address all of the information processes
H3.1Evaluates the effect of information systems on the individual, society and the environment
H3.2Demonstrates ethical practice in the use of information systems, technologies and processes
H4.1Proposes ways in which information systems will meet emerging needs
H5.2Assesses the ethical implications of selecting and using specific resources and tools
Students learn to:
1.Characteristics of multimedia systems
(a)Describe multimedia system as an information system that combines different types of media.
(b)Describe text, hypertext and number as types of media—hyperlink.
(c)Describe audio, image, animation and video as types of media—MP3, pixel, bit-mapped graphic, aliasing, vector graphic, cell.
(d)Explain the differences between print and multimedia—mode of display, interactivity.
(e)Outline image storage demands—frame buffer, bit mapping, bit depth, colour graphics.
(f)Outline audio storage demands—sampling rate, sample size, mono, stereo.
(g)Outline video processing demands—video capture card, frame rate.
(h)Outline animation processing demands—cell-based animation, path-based animation, tweening, morphing, warping.
(i)Describe the role and skills of people in multimedia systems—content providers, system designer, project manager, technical staff.
2.Examples of multimedia systems
(a)Describe multimedia in education and training in terms of participants, data/information and information technology—CBT.
(b)Describe multimedia in leisure and entertainment in terms of participants, data/information and information technology—computer games.
(c)Describe multimedia use for information in terms of participants, data/information and information technology—multimedia encyclopaedia, information kiosks.
(d)Describe multimedia use for virtual reality and simulations in terms of participants, data/information and information technology—flight simulators.
(e)Outline the advances in technology influencing multimedia development—WWW, CD-ROM speed, DVD.
(f)Evaluate well-designed multimedia systems—consistent layout and format, easy navigation, simple design elements, good design principles for each media type.
3.Displaying in multimedia systems
(a)Describe hardware devices used to display multimedia—screens, CRT, raster scan, refreshing, vector display systems, LCD, projection devices, speakers, head-up displays.
(b)Describe software for creating and displaying multimedia—presentation software, application software, authoring software, animation software, Web browsers, HTML editors.
(c)Use available hardware and software to display multimedia.
(d)Create samples of different media types.
4.Other information processes
(a)Describe collection methods and devices for digitising—scanners, digital cameras, video cameras, VCR, frame grabber, microphones, sound card.
(b)Describe organising presentations—script, storyboard.
(c)Plan a multimedia presentation using a storyboard.
(d)Describe processing data for a multimedia system—integration of data, compression and decompression, CODEC, hypermedia.
(e)Describe storing and retrieving of information for a multimedia product—compression techniques, lossy compression, lossless compression, file formats.
(f)Design and create a multimedia presentation.
5.Issues related to multimedia systems
(a)Identify and discuss copyright—acknowledgment of source data.
(b)Identify and discuss appropriate use of the Internet.
(c)Describe merging technologies—radio, television, Internet, digital television.
(d)Identify and discuss data integrity of source data.
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