KR20050103020A - Multifunctional player system available for operation and management of audio/video contents recorded in usb device - Google Patents

Abstract

The present invention can execute A / V contents of a predetermined format recorded in various USB devices such as an MP3 player, a digital camera, a mobile phone, a hard disk driver, a flash memory driver, a PC, etc., which employs a conventional DVD as well as a USB interface. Furthermore, it provides a multifunctional player system capable of data management such as A / V content transfer, copy and move between these DVD and USB devices.

The multi-function player system according to the present invention can easily and conveniently execute A / V contents recorded on a DVD or various USB devices at high quality, which is convenient for moving A / V contents and recorded on the USB device. A / V content can be easily managed, which greatly increases the efficiency of use of various USB devices possessed by many people.

Description

Multifunctional player system available for operation and management of audio / video contents recorded in USB device}

The present invention relates to a multi-function player system capable of executing A / V contents recorded on a USB device and managing data, and more particularly, a flash memory driver, an MP3 player, a digital camera, a mobile phone, The present invention relates to a multi-function player system capable of executing A / V contents in a predetermined format recorded on a hard disk driver or a PC, and further capable of managing data such as transferring and copying and moving A / V contents between these USB devices and a DVD. .

Recently, thanks to the rapid development of information and communication technology, multimedia digitization which converts audiovisual data such as audio and video into digital is progressing rapidly throughout our society. Especially, in recent years, the development of band compression technology and wired / wireless communication network Through the expansion of the Internet and the popularization of the Internet represented by the World Wide Web (WWW), many people enjoy various multimedia services.

Currently, as a dedicated storage medium for audio / video contents (hereinafter referred to as A / V contents) among such multimedia storage media, a so-called Dream Versatile Disk (DVD) has been introduced. As a standard, it is a kind of optical disc in which high-quality A / V contents of 5.1 channels or more are compressed and recorded, and can be executed by using a DVD player or a PC equipped with a DVD deck.

At this time, a DVD player and a PC equipped with a DVD deck can read A / V contents recorded on a DVD (Compatible CD (Compact Disk) and VCD (Video Compact Disk). A DVD scanning unit having a servo as a hardware component and a decoder as a software component for decoding an MPEG-1 or MPEG-2 format are included. High-quality video and sound are displayed externally through the video output device such as a TV connected to the video output terminal and the audio output terminal, and in the case of the latter PC, the image and sound are displayed through the computer monitor and the speaker.

On the other hand, in recent years, MPEG-4 (including MPEG-3, which is the same below), MPEG-7, and DivX (as well as MPEG-1 or MPEG-2 formats as a band compression technology for various A / V contents) (Same as below), Windows Media Audio / Video (WMA / WMV), Advanced Audio Coding (AAC), OGG (Vorbis, Vorbis Audio File), Advanced Streaming Format ( Advanced Streaming Format (ASF) has been introduced, and A / V content compressed in these formats can only be played by a DVD player or a PC equipped with a DVD deck, so the storage medium is limited to DVD. have.

In other words, if you want to watch A / V content in a certain format using a PC equipped with a conventional DVD deck, you must use a DVD unless the corresponding data file is stored in the hard disk drive. There is virtually no way to play A / V content without a DVD.

Moreover, existing DVD-only players or PCs with DVD decks cannot transfer, move or delete A / V content data in a certain format recorded on DVD to other storage media. Although not mentioned the cost burden of the introduction, there is no way to play A / V content of a certain format recorded on a heterogeneous storage medium other than a DVD, but the storage medium of A / V content is limited to DVD only. It's happening.

On the other hand, as the modern society enters the information age in earnest, efficient management of digital data is recognized as a very important problem. Accordingly, various storage media that can easily carry and store only desired data have been introduced.

Among them, USB devices, which are much faster to read and write data than conventional floppy disks or CDs, have been welcomed. USB (Universal Serial Bus) is a type of serial port, which is a conventional serial or parallel method. It is known as an interface with Plug-and-Play support, which is much faster than external expansion ports.

For reference, the principle of USB is the same as the existing serial port, but it has a fast data transfer speed of 12Mbps and has the advantage of being convenient for connection.It is a daisy chain method that is connected to each other by cable like SCSI (Small Computer System Interface). In theory, up to 127 peripherals can be connected.

Due to these advantages, a typical example of a USB storage medium, or USB device, used by many people is a USB flash memory driver called a stick memory. It is lightweight, compact, has a large storage capacity, and adopts a USB interface, which eliminates the need for a separate driving device such as a motor, and has a low power and long life.

Moreover, such USB devices are increasingly being used in our daily lives, and many people use hard disks as well as small electronic devices such as MP3 players, digital cameras, mobile phones, and PDAs (Personal Digital Assistants). PC hardware and peripherals such as drivers are also available in the form of USB devices.

Accordingly, an object of the present invention is to provide a player system capable of executing A / V contents compressed and recorded in a predetermined format on a variety of USB devices as well as a DVD in view of various advantages of a USB interface. We want to give USB device owners the opportunity to enjoy high-quality A / V content more simply and conveniently, while increasing the efficiency of using various USB devices.

Furthermore, an object of the present invention is to provide a multifunctional player system that can delete, transfer, copy, or move A / V content between a DVD and a USB device, thereby facilitating data management.

The present invention provides a plurality of USB ports to which the USB device is connected, and a USB host unit for connecting and controlling the A / V contents of the USB device connected to the USB port. A DVD loader into which a DVD is inserted or extracted, and a DVD scanning unit reading A / V contents from the DVD inserted thereto; An A / V codec that decodes the A / V content to generate an A / V data stream, a memory that stores data before and after decoding the A / V codec, and controls the operation of the A / V codec and controls the USB device. A control unit including a central processing unit for deleting A / V contents recorded in the electronic device or transferring or copying A / V contents recorded in the at least one USB device or DVD to another at least one USB device; An A / V signal processor for converting the decoded A / V data stream into outputable A / V data; An A / V output stage for transmitting the A / V data to an image output apparatus such as a TV and a speaker; An operation control module for adjusting an operation of the central processing unit according to a user selection; It provides a multi-function player system capable of executing and data management of the A / V content recorded on the USB device, characterized in that it comprises a display module for displaying the operation status according to the operation control module.

In this case, the USB host unit and a USB hub for concentrating the plurality of USB ports; A USB controller for reading out A / V contents of a USB device connected to each of the USB ports through the USB hub or inputting A / V contents into the USB device; A USB interface for regulating a transmission method of A / V content input and output through the USB controller; A USB application for transferring the control contents of the CPU to the USB controller between the A / V codec and the USB interface and returning the result; And a USB driver and a plurality of USB device drivers each supporting compatibility of the USB device between the USB application and the USB interface.

The DVD scanning unit may include: a servo for reading A / V content recorded on the DVD as a laser signal; An RF amplifier for amplifying the laser signal; A digital signal processor for converting the laser signal into a digital signal; And a buffer unit which buffers the digital signal in a frame unit or a track unit.

Furthermore, the A / V codec includes a dedicated decoder for decoding an audio signal encrypted in a multi-channel surround and stereo audio standard such as Dolby Digital or DTS (Digital Theater System), and the audio signal processor includes A multichannel signal preprocessing unit for outputting the decoded audio signal as multichannel sound data such as 5.1 6.1 or 7.1 channel is included, and the audio output terminal basically includes first to fourth outputting the audio signal as surround sound. The first and second speakers as the first audio output terminal, the third and fourth speakers as the second audio output terminal, the fifth speaker as the third audio output terminal, and the fourth audio output terminal as the audio output terminal. Subwoofer speakers are connected to each other, and the video output terminal is a composite video out, S-video video, Characterized in that it includes a variety of terminals, such as image imminent (component) terminal. At this time, the number of audio output terminals and speakers may be increased according to the multi-channel modulation and demodulation scheme.

In addition, the operation control module includes a keypad having a plurality of buttons assigned to the operation contents of the central processing unit and a remote control linked thereto, and the display module for displaying the operation state by a character or a picture or a combination thereof. It is a liquid crystal display device.

In addition, the player system according to the present invention includes a first external input terminal for receiving an optical signal; A second external input terminal for receiving a digital audio signal through a coaxial cable; A digital audio receiver for connecting the first and second external input terminals with the A / V codec to convert the optical signal and the digital audio signal into a form that the A / V codec can decode; A third external input terminal for receiving an AM / FM radio signal; A fourth external input terminal to which an analog signal is input; And an A / D converter configured to connect the third and fourth external input terminals with the A / V codec to convert the AM / FM radio signal and the analog signal into digital signals that can be decoded by the A / V codec. The central processing unit outputs the signals received through the first to fourth external input terminals, respectively, to an image output device such as the TV and a speaker. Explain.

1 is a block diagram of a multi-function player system (hereinafter, simply referred to as a player system) capable of executing and managing data of A / V contents recorded on a USB device according to the present invention. 2, 4, and a USB host unit 6 for converging them, a DVD loader 22 and a DVD scanning unit 24 connected thereto, and the USB host unit 6 and the DVD scanning unit 24 include: A / V signal processing units 42 and 48 are extracted from the A / V codec 34 while being connected to the A / V codec 34 of the control unit 32, respectively. ) Are A / V output terminals 44, 52, 58, 64, 68 to which video output devices 46 such as conventional TVs or monitors, and speakers 54, 56, 60, 62, 66 and 70 are connected, respectively. Are each connected.

In addition to the A / V codec 34 described above, the control unit 32 includes a central processing unit 36 and a memory 38 interlocked with the central processing unit 36, wherein the central processing unit 36 has an external operation control module 72. ) To control the A / V codec 34 and the specific operation state thereof is displayed externally through the display module 74.

Each of these parts will be described in more detail.

First, the plurality of USB ports 2 and 4 are parts to which various USB devices including a PC are connected through a USB cable, etc., and two terminals for power supply and two terminals for data transmission as in the general case. Each can be provided.

On the other hand, a USB device connected to the USB port (2, 4) of the player system according to the present invention is specifically a USB flash memory drive, digital camera, MP3 player, digital camcorder, PDA or hard disk drive or USB employing a USB interface Or a PC having a port, each of which may be MPEG-1, MPEG-2, MPEG-3, MPEG-4, MPEG-7, DivX, Windows Media Audio / Video (WMA / A / V content compressed in a format such as WMV), Advanced Audio Coding (AAC), OGG (Ogg Vorbis Audio File), or ASF (Advanced Streaming Format) may be recorded and stored.

Next, the USB host unit 6 bidirectional data communication with the A / V codec 34 to read and write A / V content compressed in a predetermined format to a USB device connected to the plurality of USB ports 2 and 4. As a part for controlling, a detailed block diagram is shown in FIG. 2.

As illustrated, the USB host unit 6 may include a USB hub 8 that focuses a plurality of USB ports 2 and 4, and a USB controller 10, a USB interface 12, and a USB driver 14 connected thereto in turn. A USB driver device 16 and 18 connected in parallel to the USB driver 14 and having an A / V codec 34 connected thereto in parallel with the USB port 2 and 4, respectively. ).

In this case, the USB hub 8 has a multi-port function for relaying the plurality of USB ports 2 and 4 to the USB controller 10, so that the plurality of USB ports 2 and 4 are shown in FIG. Although shown as dogs, it can theoretically scale up to 127.

The USB controller 10 reads the A / V contents stored in the USB device focused on the USB hub 8 as an electrical signal and transmits the electrical signals to the USB application 20 or vice versa. As a part for inputting A / V content to a USB device, the A / V content of the USB device can be input / output controlled through the A / V content.

Next, the USB controller 10 is connected to the USB driver 14 through the USB interface 12, which is a part of the data transfer method between the USB application 20 and the USB device.

In addition, the USB driver 14 is a so-called USB host driver, and the A / V contents that are bidirectionally communicated by the USB application 20 or the USB device drivers 16 and 18 are modified according to the USB interface 12 protocol. Software to be transferred to a USB device using the controller 10.

In addition, the USB device drivers 16 and 18 may be provided in the same number as the USB ports 2 and 4 by providing software to the USB application 20 by supporting various USB devices with software compatibility. It may be provided by a USB device company or may be basically built in the USB host unit 6.

Finally, the USB application 20 is software that enables the user to easily use the functions of the USB device between the A / V codec 34 and the USB device. It transfers the result to the USB controller 10 through the driver 14 and the USB interface 12 and returns the result.

 Therefore, bidirectional data communication is possible between the A / V codec 34 and a plurality of USB devices connected to the USB ports 2 and 4 via the USB host unit 6 having the above configuration.

On the other hand, the player system according to the present invention is characterized in that it is possible to execute the A / V content recorded on the DVD, as well as the USB device as well as the conventional, for this purpose and the DVD loader 22 that can be inserted or extracted DVD and The DVD scanning unit 24 may include a DVD scanning unit 24 that reads the A / V content of a predetermined format recorded on the DVD inserted into the A / V codec 34.

FIG. 3 is a detailed block diagram of the DVD scanning unit 24, which is similar to the conventional servo 26 that reads the A / V contents recorded in the double layer of the DVD as a laser signal and an RF amplifying unit for amplifying the same. (28) and a digital signal processor 30 for converting the laser signal read therefrom into a digital signal for decoding by the A / V codec 34 and then transmitting the digital signal to the A / V codec 34. A buffer unit 31 for buffering the digital signal converted by the digital signal processor 30 in units of frames or tracks is provided.

Accordingly, digital A / V content is transmitted to the control unit 32 through the USB host unit 6 and the DVD scanning unit 24. The control unit 32 is provided with an A / V codec 34 to provide a USB device. Alternatively, the digital A / V data stream is decoded to generate the digital A / V data stream.

In this case, the compression format of the A / V content that can be decoded by the A / V codec 34 may be all types of formats currently known, and specifically, MPEG-1, MPEG-2, MPEG-3, MPEG- 4, MPEG-7, DivX, WMA / WMV, AAC, OGG, ASF and more, as well as audio signals encoded in surround and stereo standards such as Dolby Digital or Digital Theater System (DTS). Dedicated decoders can be built in, which can be updated in software as needed.

The A / V data stream decoded by the A / V codec 34 is transmitted to the A / V signal processing units 42 and 48, which converts the A / V data stream decoded by the A / V codec 34. A / V output stages 44,52 after processing into A / V signals that can be displayed through an image output device 46 such as a TV and external devices such as speakers 54, 56, 60, 62, 66, 70, etc. , 58, 64, 68, and each of these A / V output terminals 44, 52, 58, 64, 68 and an image output device 46 such as a TV and a speaker (54, 56, 60, 62, 66). 70 is connected to finally display the A / V content to the outside as a high quality image and sound.

In this case, the video output terminal 44 may include a composite video out, an S-video terminal, and a component terminal. If necessary, the video output terminal 44 may include various types of progressive scan component video (PSC) terminals for HDTV. It may include an image output terminal.

In addition, the audio signal processor 48 has a multi-channel and stereo signal line for outputting multi-channel sound data to support surround stereo sound such as Dolby Digital or DTS from the multi-channel audio signal decoded by the A / V codec 34. (Pre) processing unit may be included, and as shown in this case, the audio output terminals 52, 58, 64, 68 may be provided with a plurality of, for example, a plurality of speakers connected to each other. The first to the fourth audio output terminal 52, 58, 64, 68 may be divided, the first audio output terminal 52, the first and second speakers 54, 56, the second audio output terminal 58 The third and fourth speakers 60 and 62 may be connected to the third speaker, the fifth speaker 66 may be connected to the third audio output terminal 64, and the subwoofer speaker 70 may be connected to the fourth audio output terminal 68. .

In this case, the number of speakers can be increased according to the method of multi-channel surround audio as in 6.1-7.1, and the following audio output stages are configured for output conforming to multi-channel surround and stereo standards such as 5.1, 6.1, and 7.1. Can have

On the other hand, the specific operation of the A / V codec 34 that plays the most important role in the player system according to the present invention is controlled through the central processing unit 36 and the memory 38 in the control unit 32, The central processing unit 36 has its own logic operation algorithm and controls the A / V codec 34 so that the operation of the player system according to the present invention can be performed according to the user's intention.

The memory 38 may include a ROM, a flash memory, an EEPROM (Electric Erasable Programmable Read Only Memory) for storing a program for operating the system and basic data or A / V codec algorithm required for the system. The nonvolatile memory portion of the A / V codec 34 and the volatile memory, such as DRAM and SRAM that stores the user data, such as the A / V content and the decompressed A / V content before decompression in the A / V codec 34 In addition, the dual nonvolatile memory part may be upgraded by software through the USB interface 12 as needed.

In addition, the user may control the central processing unit 36 according to the intention by using an external operation control module 72, and the operation control module 72 may include a keypad and a plurality of buttons each assigned an appropriate command. And / or a remote controller linked thereto, and a specific operation state thereof may be externally displayed using a display module 74 formed of a plat panel display device such as an LCD (Liquid Crystal Display Device). have.

Therefore, the user can use the player system according to the present invention by using the operation control module 72 while watching the display module 74 according to the purpose.

At this time, the operation of the central processing unit 36 is specifically, the A / V content transmitted from the USB device through the image output device 46 such as a TV and the plurality of speakers 54, 56, 60, 62, 66, 70. It is basically based on the image and sound display, and deletes A / V contents of a predetermined format recorded in any one of USB devices connected to different USB ports (2, 4), or one USB device according to the purpose. A / V content of a certain format recorded in the A / V codec 34 is converted to A / V content of the same format or heterogeneous format and transferred or moved to another USB device, or similarly, A / V recorded on a DVD. The content may be moved or copied to at least one USB device.

Therefore, the player system according to the present invention displays the A / V content recorded on the DVD to the outside by using the video output device 46 such as a TV and the speakers 54, 56, 60, 62, 66, 70 or DVD. Alternatively, A / V content recorded on a USB device can be transferred, copied or moved to another USB device.

On the other hand, Figure 4 is a block diagram showing an example of the expansion of the player system according to the present invention, by using an optical signal and coaxial cable externally transmitted digital audio content and other analog methods including AM / FM radio It is additionally provided with a function for displaying the audio content to the outside.

That is, for the convenience of description, the same parts having the same roles as those described above are given the same reference numerals, and thus redundant descriptions are omitted. Separately, the first external input terminal 82 to which an external optical signal is input, A second external input terminal 84 to which a coaxial cable is connected, a third external input terminal 88 to which an AM / FM radio frequency is applied, and a fourth external input terminal 90 to which other analog signals are input; And the second external input terminals 82 and 84 are connected to the A / V codec 34 through the digital audio receiver 86, and the third and fourth external input terminals 88 and 90 are connected to the A / D converter 92. It is connected to the A / V codec 34 through.

Therefore, the digital audio signal transmitted to the first and second external input terminals 82 and 84 through the optical signal or the coaxial cable can be decoded by the A / V codec 34 while passing through the digital audio receiver 86. The sound wave is transmitted through the audio signal processor 48, the audio output terminals 52, 58, 64, 68, and the speakers 54, 56, 60, 62, 66, 70 as it is transformed into the A / V codec 34. Is output to the outside in the form of, and the AM / FM signal and other analog signals received by the third and fourth external input terminals (64, 68) is converted into a digital signal during the process of the A / D converter 92 A / V codec 34 is applied in the form of sound waves through audio signal processor 48, audio outputs 52, 58, 64, 68 and speakers 54, 56, 60, 62, 66 and 70. It is output to the outside.

The player system according to the present invention described above has the advantage of being able to enjoy high quality A / V contents recorded on a DVD like a conventional DVD player or a PC, and furthermore, A / V recorded on various USB devices including a PC. It is possible to execute the V content to facilitate the movement of the A / V content.

In other words, the player system according to the present invention can greatly increase the efficiency of using a variety of different storage media already possessed by many people, and in particular, transfers A / V content data between a USB device or a DVD without a dedicated terminal such as a PC. The player system according to the present invention has the advantage of being able to delete, copy, etc. In addition, the player system according to the present invention can also execute various analog A / V contents according to the purpose, and can be conveniently used for various multimedia contents.

1 is a block diagram of a player system according to the present invention;

Figure 2 is a detailed block diagram of the USB host unit of the player system according to the present invention.

Figure 3 is a detailed block diagram of the DVD scanning unit of the player system according to the present invention.

4 is a block diagram showing an extension example of a player system according to the present invention;

<Description of the symbols for the main parts of the drawings>

2,4 USB Port 6: USB Host

8: USB hub 10: USB controller

12: USB interface 14: USB driver

16,18 USB driver device 20 USB application

22: DVD loader 24: DVD scanning unit

26: servo 28: RF amplifier

30: digital signal processing unit 31: buffer unit

32: control unit 34: A / V codec

36: central processing unit 38: memory

42: video signal processor 44: video output terminal

46: video output device 48: audio signal processing unit

52, 58, 64, 68: first to fourth audio output stage

54,56,60,62,66: first to fifth speakers

70: subwoofer speaker 72: operation control module

74: display module

82,84,88,90: first to fourth external input terminals

86: digital audio receiver 92: A / D converter

Claims (7)

A plurality of USB ports (2, 4) to which USB devices are connected, and a USB host unit (6) for connecting and controlling the A / V contents of the USB devices connected to the USB ports (2, 4); A DVD loader 22 into which a DVD is inserted or extracted, and a DVD scanning unit 24 reading A / V content from the DVD inserted thereto; An A / V codec 34 for generating an A / V data stream by decoding the A / V content, a memory 38 for storing data before and after decoding of the A / V codec 34, and the A / V Controls the operation of the codec 34 and deletes A / V contents recorded on the USB device or transfers or copies A / V contents recorded on the at least one USB device or DVD to another at least one USB device. A control unit 32 including a central processing unit 36; An A / V signal processor (42,48) for converting the decoded A / V data stream into outputable A / V data; An A / V output terminal (44,52,58,64,68) for transmitting the A / V data to the image output device (46) and the speakers (54, 56, 60, 62, 66, 70); An operation control module 72 for adjusting an operation of the central processing unit 36 according to a user selection; And a display module (74) for displaying an operation state according to the operation control module (72). The method of claim 1, The USB host unit 6 includes a USB hub (8) for focusing the plurality of USB ports (2, 4); A USB controller (10) for reading A / V contents of a USB device connected to each of the USB ports (2, 4) through the USB hub (8) or inputting A / V contents to the USB device; A USB interface 12 for controlling a transmission method of A / V content input and output through the USB controller 10; A USB application (20) for transferring the control contents of the central processing unit (36) between the A / V codec (34) and the USB interface (12) to the USB controller (10) and returning the result; And a USB driver 14 and a plurality of USB device drivers 16 and 18 for supporting the compatibility of the USB device between the USB application 20 and the USB interface 12, respectively. Multifunctional player system that can execute recorded A / V contents and manage data. The method of claim 1, The DVD scanning unit 24 includes a servo 26 for reading A / V contents recorded on the DVD as a laser signal; An RF amplifier 28 for amplifying the laser signal; A digital signal processor (30) for converting the laser signal into a digital signal; And a buffer unit (31) for buffering the digital signal in units of frames or tracks. The method of claim 1, The image output device is a multi-function player system capable of executing and data management of the A / V content recorded on the USB device, characterized in that the TV, monitor. The method of claim 1, The A / V codec 34 includes a dedicated decoder for decoding an audio signal encoded in a multimedia compression format and surround form or a stereo sound standard, and the audio signal processor 48 stereo and decodes the decoded audio signal. A pre-signal processing unit for outputting the channel sound data is included. The audio output terminals 52, 58, 64, and 68 are composed of a plurality of outputting the audio signal as surround sound, and the speakers outputting the corresponding surround sound are respectively connected to the plurality of audio output terminals. A / V contents recorded on a USB device can be executed and data can be managed, including a plurality of video output terminals including a composite video out, an S-video video terminal, and a component terminal. Multifunctional player system. The method of claim 1, The operation control module 72 includes a keypad having a plurality of buttons to which the operation contents of the central processing unit 36 are assigned, and a remote controller linked thereto. The display module (74) is a multi-function player system capable of executing and data management of A / V content recorded in a USB device, characterized in that the liquid crystal display device for displaying the operation state by a character or a picture or a combination thereof. The method of claim 1, A first external input terminal 82 to which an optical signal is input; A second external input terminal 84 for receiving a digital audio signal through a coaxial cable; Connecting the first and second external input terminals 82 and 84 to the A / V codec 34 to convert the optical signal and the digital audio signal into a form that the A / V codec 34 can decode; A digital audio receiver 86; A third external input terminal 88 for receiving an AM / FM radio signal; A fourth external input terminal 90 to which an analog signal is input; The A / V codec 34 can decode the AM / FM radio signal and the analog signal by connecting the third and fourth external input terminals 88 and 90 to the A / V codec 34. The CPU 36 further includes an A / D converter 92 for converting a signal into a signal, and the CPU 36 converts a signal received from the first to fourth external input terminals 82, 84, 88, and 90 into the image, respectively. Multi-function player system capable of executing and data management of the A / V content stored in the USB device, characterized in that output to the output device 46 and a plurality of speakers (54, 56, 60, 62, 66, 70).