CN1109332C - Cd播放机 - Google Patents

Cd播放机 Download PDF

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CN1109332C
CN1109332C CN96110127A CN96110127A CN1109332C CN 1109332 C CN1109332 C CN 1109332C CN 96110127 A CN96110127 A CN 96110127A CN 96110127 A CN96110127 A CN 96110127A CN 1109332 C CN1109332 C CN 1109332C
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video
vcd
order
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CN1148235A (zh
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崔海玟
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Samsung Electronics Co Ltd
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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H1/00—Details of electrophonic musical instruments
    • G10H1/36—Accompaniment arrangements
    • G10H1/361—Recording/reproducing of accompaniment for use with an external source, e.g. karaoke systems
    • G10H1/363—Recording/reproducing of accompaniment for use with an external source, e.g. karaoke systems using optical disks, e.g. CD, CD-ROM, to store accompaniment information in digital form
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H1/00—Details of electrophonic musical instruments
    • G10H1/36—Accompaniment arrangements
    • G10H1/361—Recording/reproducing of accompaniment for use with an external source, e.g. karaoke systems
    • G10H1/368—Recording/reproducing of accompaniment for use with an external source, e.g. karaoke systems displaying animated or moving pictures synchronized with the music or audio part
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10527—Audio or video recording; Data buffering arrangements
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/102—Programmed access in sequence to addressed parts of tracks of operating record carriers
    • G11B27/105—Programmed access in sequence to addressed parts of tracks of operating record carriers of operating discs
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/426—Internal components of the client ; Characteristics thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/84—Television signal recording using optical recording
    • H04N5/85—Television signal recording using optical recording on discs or drums
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H2240/00—Data organisation or data communication aspects, specifically adapted for electrophonic musical tools or instruments
    • G10H2240/011—Files or data streams containing coded musical information, e.g. for transmission
    • G10H2240/046—File format, i.e. specific or non-standard musical file format used in or adapted for electrophonic musical instruments, e.g. in wavetables
    • G10H2240/066—MPEG audio-visual compression file formats, e.g. MPEG-4 for coding of audio-visual objects
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537—Optical discs
    • G11B2220/2545—CDs

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Television Signal Processing For Recording (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)

Abstract

一种用于重现CD-OK盘和VCD盘的CD播放机，它包括：系统/视频控制器，微型电子计算机，用于恢复压缩视频数据和压缩音频数据的译码器；缓冲RAM，用以在CD-OK重现过程中存储CD-OK盘的控制数据和系统/视频控制器的数据，并在VCD重现过程中存储VCD的控制数据和系统/视频控制器的数据；此外还包括视频RAM，第一、第二数-模转换器，第一、二转换开关和视频编码器。

Description

CD播放机
技术领域
本发明涉及一种小型盘(CD)播放机，具体地说，涉及一种重现CD-OK盘和VCD盘的CD播放机。
背景技术
CD-OK系统重现选自小型盘的歌曲伴奏信号、抒情和背景画面，盘中储存有大约7000首歌曲和大约4000个无声画面信息(伴音和抒情画面)。
图1是表示普通CD-OK系统构造的方框图。
图1所示的设备配置有系统/视频控制器108，用以产生地址、同步信号，以及为复原CD-OK系统的视频数据所需的各种控制信号；控制所述系统/视频控制器108的微型电子计算机102；只读程序存储器(ROM)100，其中存有操纵微型电子计算机102所需的各种程序；缓冲随机存取存储器(RAM)104，用于暂时存储微型电子计算机用的数据；存储自系统/视频控制器108输出之图象数据用的视频RAM110；用于将系统/视频控制器108输出的无声画面信息转换成RGB信号的数-模转换器112；视频编码器116，利用系统/视频控制器108的地址及同步信号将从数-模转换器112接收的RGB信号变换成合成画面信号，并输出该合成画面信号；声源模块106，用于接收盘(未示出)的乐器数字接口(MIDI)信息，因而产生CD-OK声音信号；以及转换开关118，用以选择经数-模转换器120转换的、外部CD的声音数字信号，或来自声源模块106的CD-OK音频输出，并输出所选的信号。
VCD系统可以利用盘重现数字式运动画面和数字式声音，所述的盘内储存有按“活动图象专家组”(MPEG-Moving PictureExperts Group)标准压缩的图象及声音。
图2是表示一种通常所见的VCD系统结构的方框图。
图2所示的设备配置有MPEG译码器212，用以处理VCD操作所需的压缩视频信号和压缩音频信号；控制所述MPEG译码器212的微型电子计算机218；缓冲RAM216，用于暂时存储微型电子计算机218中将要使用的数据；存储操作所述MPEG译码器212所需程序的微编码ROM210；存储所述MPEG译码器212的图象数据的视频RAM214；数-模转换器220，用于将所述MPEG译码器212输出的数字式图象信号转换成RGB图象信号；视频编码器224，用于将数-模转换器220输出的RGB信号转换成合成图象信号；以及数-模转换器226，用于将所述MPEG译码器212输出的数字式音频信号转换成模拟间频信号，并输出经转换的模拟式音频信号。
在上述现有技术中，CD-OK及VCD系统的电路不同。因此，若将它们集成到一个组合装置中，就使制作成本增加，所占的面积也过大。
发明内容
本发明的目的在于提供一种用于重现CD-OK盘和VCD盘的小型盘(CD)播放机，其中的微型电子计算机、存储器以及CD-OK系统和VCD系统的视频编码电路被集成化。
为实现上述目的，本发明提供一种用于重现CD-OK盘和VCD盘的小型盘(CD)播放机，它包括：系统/视频控制器，用以产生CD-OK盘重现用的控制信号，并于VCD重现过程中控制经压缩的信号；微型电子计算机，它利用从系统/视频控制器接收的控制信号输出用于CD-OK盘重现的音频和视频数据，并输出VCD再现所需的控制信号；压缩信号译码部分，用以将VCD重现过程中所接收的压缩视频数据和压缩音频数据分别恢复成解压缩的视频数据和音频数据；缓冲RAM，用以在CD-OK重现过程中存储CD-OK盘的控制数据和系统/视频控制器的数据，并在VCD重现过程中存储VCD的控制数据和系统/视频控制器的数据；视频RAM，用以在CD-OK重现过程中存储无声画面的数据和CD-OK盘的叠加数据，并在VCD重现过程中存储压缩信号译码部分的压缩视频及音频数据；第一数-模转换器，用以将微型电子计算机输出的CD-OK视频数据转换成模拟RGB图象信号；第二数-模转换器，用以将压缩信号译码部分输出的图象数据转换成模拟RGB图象信号；第一转换开关部分，用以根据微型电子计算机的选择信号从第一和第二数-模转换器的输出中选择RGB图象信号之一；视频编码器，用以将第一转换开关部分输出的RGB图象信号变换成合成画面信号，并输出所变换成的信号；第二转换开关部分，用以选择压缩信号译码部分输出的VCD音频信号和系统/视频控制器输出的CD-OK音频信号之一，并输出该结果。
附图说明
通过对照附图详细描述本发明的优选实施例，将使本发明的上述目的及优点变得愈加清楚，其中：
图1是表示通常所见CD-OK系统结构的方框图；
图2是表示通常所见VCD系统结构的方框图；
图3是表示本发明CD播放机的方框图。
具体实施方式
图3所示的装置配备有系统/视频控制器308，用以产生地址、同步信号，以及为复原CD-OK系统的视频数据所需的各种控制信号；控制所述系统/视频控制器308的微型电子计算机302；只读程序存储器(ROM)300，用于存储操作微型电子计算机302所需的程序和操作MPEG译码器316所需的程序；缓冲随机存取存储器(RAM)304，用于暂时存储微型电子计算机302用的数据；利用系统/视频控制器308产生的地址存储图象数据用的视频RAM310；用于将系统/视频控制器308输出的无声画面信息转换成RGB图象信号的第一数-模转换器312；MPEG译码器316，利用系统/视频控制器308输出的地址和同步信号对压缩视频信号及压缩音频信号译码；用于存储操纵MPEG译码器316所需数据的缓冲器314；用于按照时钟信号将MPEG译码器316输出的被译码的数字图象数据转换成RGB图象信号的第二数-模转换器322；视频转换开关318，用以从第一和第二数-模转换器312和322的输出中选择RGB图象信号之一；视频编码器320，用以将视频转换开关318输出的RGB图象信号变换成合成画面信号；声源模块306，用于根据所传输的MIDI数据产生CD-OK音频信号；第一音频转换开关324，用于选择MPEG译码器316输出的VCD音频信号或从外部小型盘输出音频信号；用于将第一音频转换开关324所选择的音频信号转换成模拟音频信号的第三数-模转换器328；以及第二音频转换开关326，用于选择声源模块306输出的CD-OK音频信号和从第三数-模转换器328输出的音频信号。
这里的在小型盘的重现区(未示出)重现的CD-OK信号和VCD信号分别被输出给微型电子计算机302和MPEG译码器316。
系统/视频控制器308选择系统操作所需的芯片，并通过微型电子计算机302的控制处理CD-OK盘的视频数据及音频数据，而MPEG译码器316处理VCD的被压缩的视频及音频数据。在此，微型电子计算机302在所述只读程序存储器(ROM)300和缓冲随机存取存储器(RAM)304中存储有为本身及MPEG译码器316的操作所需的程序和数据。
在CD-OK盘的重现过程中，系统/视频控制器308由微型电子计算机302控制产生一个地址，同时，所接收的无声画面信息被存储于CD-OK数据区的视频RAM310中。视频RAM310中所存的视频数据被传给主要由电阻器构成的数-模转换器312，并被变换成模拟式RGB图象信号。
在VCD的重现过程中，系统/视频控制器308产生并通过视频RAM地址乘法器(未示出)向视频RAM310输出一个地址。MPEG译码器316的数据总线通过双向缓冲器314被联到视频RAM310，从而所述MPEG译码器316也能使用该视频RAM310。利用系统/视频控制器308的地址，将被复原的(解压缩的)视频数据存储于VCD的数据区内，并利用系统/视频控制器308的地址和同步信号，将所存的数据经缓冲器314输出给MPEG译码器316。
MPEG译码器316复原被压缩的图象数据，从MPEG译码器316输出的图象数据被数-模转换器322变换成RGB图象信号，并将所变换成的数据输出。
于是，视频转换开关318为CD-OK盘选择数-模转换器312输出的RGB图象信号，或者为VCD选择来自数-模转换器322的RGB图象信号。所选择的RGB图象信号被视频编码器320变换成待显示的合成图象信号。
同时，在CD-OK重现过程中，由系统/视频控制器308将所接收的MIDI数据输出到储存声源的声源模块306中。转换成CD-OK音频信号，从而输出之。另外，在VCD重现过程中，由MPEG译码器316将所接收的压缩音频数据存储到视频RAM310中，再通过MPEG译码器316将视频RAM310中所存的压缩音频数据恢复成VCD音频信号。
第一音频转换开关324选择从外部CD重现部分(未示出)接收的VCD音频数据或CD音频数据，并由数-模转换器328将所选择的音频数据变换成模拟音频信号。
第二音频转换开关326选择从小型视盘输出的音频信号或从CD-OK盘输出的音频信号。
因此，微型电子计算机302、只读程序存储器(ROM)300、缓冲随机存取存储器(RAM)304、视频RAM310和视频编码器320共在为重现CD-OK和VCD的联合设备内。视频RAM310可根据由系统/视频控制器308所选择的地址来选择CD-OK盘的在存储或小型视盘的存储区。
按照上面描述的本发明，使CD-OK以及VCD系统的重现电路元件融合在一起，因而降低了制作成本。

Claims (1)

1.一种小型盘(CD)播放机，用于重现CD-OK盘和VCD盘，它包括：
系统/视频控制器，用以产生所述CD-OK盘重现用的控制信号，并于所述VCD盘重现过程中控制压缩信号；
微型电子计算机，它利用从所述系统/视频控制器接收的控制信号输出用于CD-OK盘重现的音频和视频数据，并输出所述VCD重现所需的控制信号；
压缩信号译码部分，用以将所述VCD重现过程中所接收的压缩视频数据和压缩音频数据分别恢复成解压缩的视频数据和音频数据；
缓冲RAM，用以在所述CD-OK重现过程中存储所述CD-OK盘的控制数据和所述系统/视频控制器的数据，并在所述VCD重现过程中存储所述VCD的控制数据和所述系统/视频控制器的数据；
视频RAM，用以在所述CD-OK重现过程中存储无声画面的数据和所述CD-OK盘的叠加数据，并在所述VCD重现过程中存储所述压缩信号译码部分的所述压缩视频及音频数据；
第一数-模转换器，用以将所述微型电子计算机输出的CD-OK视频数据转换成模拟RGB图象信号；
第二数-模转换器，用以将所述压缩信号译码部分输出的图像数据转换成模拟RGB图象信号；
第一转换开关部分，用以根据所述微型电子计算机的选择信号从所述第一和第二数-模转换器的输出中选择RGB图象信号之一；
视频编码器，用以将所述第一转换开关部分输出的RGB图象信号变换成合成画面信号，并输出所变换成的信号；
第二转换开关部分，用以选择所述压缩信号译码部分输出的VCD音频信号和所述系统/视频控制器输出的CD-OK音频信号之一，并输出该结果。
CN96110127A 1995-07-31 1996-06-28 Cd播放机 Expired - Lifetime CN1109332C (zh)

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KR1019950023527A KR0183726B1 (ko) 1995-07-31 1995-07-31 씨디 오케이와 비디오 씨디로부터 신호를 재생하는 씨디 재생장치
KR23527/95 1995-07-31
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