TWI223743B - Method for reducing power consumption of multimedia data playback on a computer system - Google Patents

Abstract

A method for playing multimedia data on a computer system. The computer system has a central processing unit (CPU) used to control operations of the computer system, a storage device used to retrieve the multimedia data, a bridge circuit electrically connected between the CPU and the storage device for coordinating data transmission between the CPU and the storage device, and an output device. The method includes providing the computer system with a playback controller electrically connected to the storage device and the output device, controlling the storage device to transmit the multimedia data to the playback controller without activating the bridge circuit, utilizing the playback controller to receive and process the multimedia data, and utilizing the playback controller to drive the output device to play the multimedia data.

Description

1223743

The technical field to which the invention belongs Prior technology In today's Bessin society, 'computer systems that are widely used in various industries are playing an important role in many companies', and as storage capacity increases, Improvement, reduction of production cost, and more convenient user interface, computer system, such as a personal computer (PC), can also be used as an information processing center. Nowadays, the media technology can provide users with more exciting entertainment effects. For example, a movie can be recorded on a dig ^ ta versatile disc (DVD) or a video disc (vide〇). All

compact disc (VCD), so if an optical disc drive is installed on a personal computer, the personal computer can drive the optical disc drive to extract file data corresponding to movies and movies, and then the personal computer can The profile information to play the movie video. Please refer to Figure 1. Figure 1 is a functional block diagram of the conventional computer system 10. Electricity

The brain system 10 includes a central processing unit (CPU) 12 and a north bridge circuit.

Page 7 1223743 V. Description of the invention (2) 14 'a south bridge circuit 16, a memory 18, an optical disk drive 20, a display system 22, an input device 24 , And a monitor 26. In addition, the display system 22 includes a display controller 28 and a video transmission circuit (video r a n s m i 11 e r) 30. The central processing unit 12 is used to control the operation of the computer system 10. The north bridge circuit 1 4 is electrically connected to the central processing unit 12 and is used to control the central processing unit 12 and high-speed peripheral devices (such as memory 1 8 And the display control circuit 2 8), and the south bridge circuit 丨 6 series is electrically connected to the north bridge circuit 14 to control the north bridge circuit 14 and low-speed peripheral devices such as optical disc drive 20 and input device 2 4) Signal transmission between. Memory | body 18 'is, for example, a random access memory (d yn a m i c r a n d 0 m access memory, DRAM), which is used to store data. The optical disc drive 20 is used to read data recorded on an optical disc (o p t i c a 1 d i s c). In addition, the input device 2 4 is used to receive a control command issued by a user. For example, the input device 24 is a keyboard for inputting character signals to the computer system 1 0, or an input device. 2 4 is a mouse 'used to input the indicator signal to the computer system 1 0. The display system 2 2 is used to drive the screen 2 6 to display the image screen, in which the display control circuit 24 can perform 2D graphics operations and 3D graphics operations, and output the corresponding | corresponding image A to the ail transmission circuit 3 〇, and video transmission The circuit 3 can convert the image roar into a corresponding driving signal suitable for driving the screen 26. For example, if the screen 26 is a liquid crystal display (LCD) screen, the video transmission circuit 3 Round the image

Page 8 1223743 V. Description of the invention (3) is converted into a driving signal conforming to a digital visual interface (DVI), so that the video signal can smoothly drive the liquid crystal display screen to display an image. When the computer system 10 is powered on, it will also start (p0wer on) the optical disc drive 20, and then the computer system 10 will perform a boot process, such as a self-function test (p〇wer-〇n-self-test, POST). After an operating system (OS) is successfully loaded, the user can use the optical disc drive 20 to retrieve the data stored on the optical disc. For example, after the application program is multifunctional, the optical image data should be played. Relevant image-like moving screen discs The user uses a program, a portable disc drive, a wheel application to decode the video to the utilization type recorded in the video (controllable or a 20 to the middle of the program to calculate the input device 2 4 to the last recorded operation) Command the central processing playback application), the optical disc drive 20 to capture the recorded video in the optical disc (audio-visual disc) will be displayed and controlled by the Southbridge circuit 16 and the Northbridge central processor 12 to play the command display control The circuit 28 generates a corresponding image signal for this, and outputs the circuit 30 for video transmission, and the user can watch the movie of the image data through the screen 26. The device 12 executes one and then plays a digital image, for example. However, the circuit 14 uses the image program and the image data is input and output to the image circuit 30 to drive the response.

As mentioned above, the computer system 10 is the first component. However, in order to play the image data stored on the disc, the boot process must be performed to start all internal circuits. The components in the monthly system 10 consume a lot of power. To

Page 9 12234743 V. Description of the invention (4) > Notebook computer (1 apt op computer) as an example, the operating system is mainly provided by the battery device 'for the Pentium4R's computer ^ 言 力 言' as a whole Power consumption will be greater than 100 watts. However, instead of dying, every circuit component of 0: is recorded on the playback disc; 糸: = about 'for example, the use of a hard disk (hard_dlsk drive) at this time, but the hard disk still consumes power With rotating bean disks (: ^ netic disk), obviously, the computer system u will generate more heat because of this, so the heat dissipation will become a ten-per-watt computer (computer system 10) ^ Convenient To use notes, videos, audio and video discs ⑽) on the \\ ^ / 像 ^^ 片 (_ or the content of the invention Therefore, the main purpose of the present invention & + &# when playing multimedia data in the system ^ ^ 1 Method for reducing computer system. Power consumption method to solve the above-mentioned application according to the present invention (computer system) play _ 巳 一种, a computer system system including a central processing unit _ _ 媒体 media data method The computer CPU) is used to control the computer system, ^ CHral processing unit, (S — g "eVice) is used to 'fetch the multimedia data, a bridge circuit

Page 10 1223743 V. Description of the invention (5) Household account (Clrcuit), which is electrically connected to the central processing unit and the storage unit / sister 彳 i 2 for coordination between the central processing unit and the storage unit = transmission , And an output device. The method includes providing a video playback controller to the computer system. The video playback controller is electrically connected between the storage device and the output device, and controls the storage device to transmit the multimedia data to the video playback controller. Do not activate the bridge circuit to process the multimedia data, and use the video playback controller to process the multimedia data and drive the output device to play the multimedia data.

Since the computer system of the present invention includes a video playback controller, which can operate normally when the computer system is kept off without executing the boot-up procedure, only some components of the computer system of the present invention are consumed Electricity, so the power consumption produced can be greatly reduced. Embodiment Please refer to FIG. 2, which is a functional block diagram of the computer system 40 of the present invention. The computer system 40 includes a central processing unit (central

processing unit (CPU) 42, a north bridge circuit 44, a south bridge circuit 46, a memory 48, a display controller 50, and an audio processor 51, an optical disk drive 52, a video playback

Page 11 1223743 V. Description of the invention (6) controller (playback controller) 54, a monitor (56), and a speaker (57) 57. The video playback controller (57) includes a video decoder (video) decoder) 58, a scaling circuit or scaler 60, a video transmitter 62, and an audio decoder 6 4 ° central processor 4 2 is used to control the computer system For the operation of 40, the North Bridge Circuit 44 is used to control the signal transmission between the central processing unit 42 and high-speed peripheral devices (such as Lu Jife Body 48 and the display control circuit 50), while the South Bridge Circuit 46 is It is used to control the signal transmission between the North Bridge circuit 44 and the low-speed peripheral devices (such as the optical disc drive 5 2). Memory 48 is used to store data. For example, memory 48 may be volatile memory, such as dynamic random access memory (DRAM), or memory 48 may also be used. It can be non-volatile memory (nonv0i at i le ° memory) 'for example, flash memory (fiashmemory). The display control circuit 50 is used to perform 2D graphic operations and 3d graphic operations, and generates an image number to drive the screen 56 to output the corresponding image day and time. In addition, the sound effect processing circuit 51 is used to convert the digital sound data into corresponding analog sound signals to drive the speaker 57. For example, the sound effect processing circuit 51 is set on a sound card or a sound card A conventional audio chip on a motherboard of the computer system 40. In addition, the optical disc drive 52 is used to retrieve an optical disc 1223743. V. The data recorded on the optical disc (7). The disc is a multifunctional digital disc. Optical drive · Similarly, if the optical disc is a dagger, the audio compact disc (audio compact disk and i ”disc or Nikko optical disc is a CD disc drive. As shown in FIG. 2: A batch]: The optical disc drive 52 will be connected The optical disc player 52 and the display control electric playback controller 54 are electrically separated: i: ί: described as J. Computer system 4. The component block 66a in the center includes a central processor 4g, as shown in FIG. Power supply area memory 48 'and display control circuit 44, south bridge circuit 46, 66b contain light; ^ $ 52, & Road A-In addition, the power supply block and Weibu eight 57. Fake ^ motor brain amplifier Control 11, 54, screen 56, computer), and in the 'shut down $: ,,,,,, and pen from the pen§ own computer (^ apt〇P in-multi-function digital disc one to the right; the user wants to watch the stored movie stored The video, 5 shirt audio CD (VCD) will be activated, and the electric two books: Shi "column, only the power block 66b users press I ί ί will not start. For example, if the button on the case of the K ΐ ΡΪΑΪ, ΐ f. (Such as-" button is a battery lift ^ I5), the power block 6 6b will When it is selected and started, the required operation is performed. When t 1 is provided, the light beam κ of the device optical disc drive 52 belonging to the power block 661 is provided. The optical disc drive 52 can read any load and can be transferred to ρ. The video data controller 54 is thus recorded on the optical disc. As is well known in the industry, image data must be encoded by a nose method (such as MPEG-2). 1223743 V. Description of the invention

= After the video playback controller 54 receives the video recorded on the disc, the video decoder 58 may decode the video data and rotate the decoded video data to the conversion circuit 60. The conversion circuit 60 is used to adjust the decoded image data so as to conform to the display resolution supported by the screen 56. For example, the image data corresponds to a display resolution of 640x480, which requires 640 * 48 〇 pixels to output each image frame in the movie film corresponding to the image data: However, the display resolution used for the false right screen 5 6 is set to 丨 2 8 〇X 丨 〇2, which means that the screen 56 uses 1 280 * 1 024 pixels to display the image, the conversion of Bay Road 60 needs to adjust the image data that originally corresponds to the display resolution of 64 × 48 ×, so that the image data can be smoothly displayed on the display opening corresponding to 128 × 1〇24. ι / ίοdegree iUfs 56; on the other hand, if the image data corresponds to a display resolution of ^ 2 ^ χ1〇24, that is, 128 × 1024 pixels are required to output the movie film corresponding to the image data For each image screen, the display resolution set by Iron Curtain 56 is 640x480. If you use 640 * 480 pixels to display the image, you will convert the electrical overshoot and damage the image corresponding to the display resolution of i 280xl 0 24 Zi ^ I Road It is smoothly displayed on a screen 5 6 corresponding to a display resolution of 64 × 480. Immediately after the 'converted image 6 2', in this embodiment, the video transmission is suitable for the driving signal of the screen 5 6. The liquid crystal display data in the notebook computer is transmitted to the video transmission circuit. Circuit 6 2 can convert the image data into 凊 Note ’The screen 5 6 can be a built-in screen or an external display device < 1

Page 14 1223743 V. Description of the invention (9) Set (for example, an electrically connected liquid crystal display screen, depending on the driving signal of the digital image interface; Transmission circuit 62 2 note, RGB signal, machine or high-resolution disc Or audio and video data, the other 5 2 will output the audio signal 5 7 to drive the horn TV or a shadow screen. For example, the signal transmission circuit (digital Similarly, if the video signal or YP b P r TV (the sound is transmitted to the sound effect on the CD-ROM and then decoded the 57 ray tube screen), or an externally speaking, if the screen 5 6 is a liquid crystal display 6 2 will convert the image signal into a visual interface , DVI) standard screen 5 6 is a TV, then the video signal is converted into S-video (S-video) signal to drive a standard TV HDTV). For digital multi-function data, the data contains not only shadow data. Therefore, when the data is decoded by the optical disc decoder 6 4 to decode the encoded sound signal in the data, it will be output to the system 0 eight compression = central two; = 66: and was activated 'so there is no operating power ii If 42 , North Bridge Circuit 46, South Bridge Circuit 46, Record = Xi Ϊ ί ί 不 ί 电路 circuit 5〇, so the computer system 40 will not be tested by S 〇 self-function test (p〇wer_〇n_sel f— te ρπ ^ and Start-up, that is, the south bridge circuit 46 cannot process the output data, and the computer system 40 can only greatly reduce its overall power consumption because it only powers on ::: <1. &Amp; ghost 66b Assuming that the notebook computer (computer system 40) has been started, the video playback controller 54's ^ = native boot sequence is as follows. This

! 223743

V. Description of the invention (10) When one of the embodiments of the present invention is to use the south bridge circuit 4 6 to process the data output by the optical disc drive 5 2, please note that when the computer system 4 is turned on, the two power sources are in block 6 6 a, 6 6 b will start, so any component set in the power block 6 6 a, 6 6 b can work normally. When the user inserts a multifunctional digital disc or audiovisual disc that stores the image data corresponding to a movie film to the optical disc drive 52, the computer system 4 can order the optical disc drive 5 2 to transmit the shirt image data to the south bridge circuit 4 6. Then, the south bridge circuit 46 will go further and also transmit the image data to the north bridge circuit 44. As is known in the industry, the video / image data is encoded and processed through a predetermined algorithm (such as MpEG-2). In addition, the conventional playback application executed by the central processing unit 42 decodes the processing to The image signal corresponding to the image data after the restoration of the image data is further transmitted to the video signal in the video playback audio playback controller 54 to properly drive the screen 56. The homophonic data will also be decoded by the central processing program at the same time, and then the conventional broadcast data will be sent to the audio processing circuit 5 i. The audio data of the bit is an analog sound. Please note that, as mentioned above, the present invention (compatible) The encoded image data can be processed, and finally the display control circuit 50 is converted into a driving signal 'and the driving sil 3 tiger controller 54'. At this time, the audio signal processing circuit 6 2 will process the driving signal sample, and the sound playing circuit 5 1 will output the decoded sound along with the conventional playback application executed by the audio device 4 2 of the video data. The digital signal is converted to further drive the speaker 5 7. Video playback controllers 5 4 are compatible with playback mechanisms.

According to another embodiment of the present invention, the data output from the optical disc drive 52 is straight.

Page 16 1223743

V. Description of the invention (11) It is then transmitted to the audio-visual playback controller 54 without the need to control and process the related data transfer wheel via the south bridge circuit 46. As is known in the industry, the encoded image data can be decoded through a software (so ft ware) or a hardware (hardware). For the &lt; computer system 40 shown in FIG. The controller 54 is used as a hardware coder to decode the encoded video data. Similarly, the video player controller 54 can also process the audio data accompanying the video data. In other words, the video controller 54 replaces Know the playback application to provide the step-down function to reduce the workload of the CPU 4 2 (When the playback application is executed, it will command g 'two', so the J-bit disc or the audio-visual disc is read It uses the function playback controller 5 4. It is directly transmitted to the audio-visual area for transmission of electrical efficiency decoding driving the multi-function source block produced by the large-scale source block.

J '丨 4 Fen Wai Gan He Qiao steals 5 8 and A handles image data and sound data,: L $ 码 器 64 系 分别! 6: The control screen 56 displays: = 0 and the video benefit 64 will switch Digital sound = like denim, and sound ° 八 57. In addition, the sound signal of the Southbridge circuit ratio is: so when the user uses the computer disc player 52 to output = the disc or the audio-visual disc = the components stored in 6 6 a, it is ~ shirt, Considering: that is, compared with the workload transmitted by the conventional technology, force = power consumption, so the 夭 in the power block 66a is stored in the multi-function number ^ "The first movie on the disc 1223743 V. Invention (12), the overall power consumption is greatly reduced. From the above description, it can be seen that when the computer system 40 is a notebook computer, whether the notebook computer (computer system 40) is turned off or not, 1 The audio and video playback controller 54 can be used to reduce the power consumption of the notebook computer and extend the power supply of the battery device of the notebook computer. 1 丄 t 2 The audio and video playback controller 54 can also be used to process only the recorded audio ^ ΐlifting, such as ordinary audio CDs,

The disc =, two μ SACDR discs, or the DVD-AUDI0R disc / disc disc currently being promoted are related to the playback operation similar to the aforementioned video data, so they are only briefly described below. Bear-shaped rice: Electricity month! The system 40 is a notebook computer and was originally turned off 22 ^ § A user presses a button on the case of the optical disc drive 5 2 # 开! UY "button or ΙΟΡΕΝ" button), the power block executes the routine A. · Note that the power block 66a remains off and cannot be used. ^ I (power-on- 料 料 ^ \ Ρ〇 / Τ ). Therefore, the user can store and store the sound player 52 at this time: music disc) to the disc player 52, and the disc is read ^ to capture the recorded sound data on the side disc and transmit the SPG Erli to f sound playback controller 54. Then, the sound effect decoder 64 compares: sound U sound: material, and converts the digital sound data into a class ϊ I 后. After that, the sound effect decoder 64 uses the sound signal ^ stab 57. In addition, the sound effect decoder 64 can also be used as a digital

Page 18 1223743

V. Description of the invention (13) A digital equalizer is used to adjust the frequency response corresponding to the sound A. Therefore, with the assistance of the sound effect decoder 64, the sound of the sound output by η 8 57 is produced. As a result, quality can be further improved. If the computer system 40 has executed the boot process and is in the boot state, the operating voltage will be input to each component belonging to the power block 66a, 66b 'in other words, live' At this time, the sound data is like video data The decoding operation can be performed by a piece of hardware (such as a conventional playback application program) executed by a hardware (such as a video playback controller 54) and a central processing unit 42 in the computer system 40. Assuming that the sound data is decoded by a conventional playback application program, the computer system 4 will prohibit the use of the video ^ controller 54 to decode the sound data, so the sound data of g ^ of the optical disc drive 52 will be transmitted to South bridge circuit 46, and then south bridge circuit ^ 46 outputs the sound data it receives to north bridge circuit 44. Finally, the central processor 42 can access the sound data, and the currently running conventional playback application program starts. Decoding operation is performed on the sound data. After decoding, the audio data is output to the audio effect processing circuit 51. After the audio effect processing circuit 51 finishes converting the digital audio data into an analog audio signal, the audio effect processing circuit 51 drives the speaker 57 according to the analog audio signal. In addition, it is worth noting that the video playback controller 54 of the present invention can know the mechanism of video playback. If the audio and video playback controller 54 is used to directly decode the sound data, and 1223743 5. Description of the invention (14) No need, the south bridge circuit 46 controls and processes the relevant data transmission, so the computer system 40 will prohibit the use of the south bridge The circuit 46 handles the related data transmission of the sound data. Therefore, the sound data output by the optical disc 胄 52 is directly transmitted to the video playback controller 5 4, and then, the sound effect decoder 6 4 starts decoding operations on the received sound data. The digital audio data is converted into an analog audio signal. Finally, the audio decoder 64 drives the speaker 57 according to the analog audio signal. Since the circuit το provided in the power block 66a is not used to process the audio data outputted by the optical disc drive 52, the power consumption of the computer system 40 is reduced accordingly. The computer system 40 may be a notebook computer as described above, or a desktop computer. For a desktop computer, the operation of a component provided in the power supply block 66b is similar to that when the component is provided in the aforementioned notebook computer. For example, the audio and video playback controller 54 is compatible with the conventional audio and video playback mechanism. In addition, the audio and video playback controller 54 can directly process the multimedia output from the optical disc drive 52 without activating the south bridge circuit 46 to The multimedia data is processed, so the power consumption of the desktop computer is reduced accordingly. When the desktop computer is turned off or on, the components set in the power block 66a will not interfere with the processing of the multimedia data. In addition, only the components in the power block 66b will be activated for processing. The multimedia data, so the structure of the present invention for playing + playing video data can also achieve the purpose of reducing the power consumption of the desktop computer.

1223743 V. Description of the invention (15) In the above embodiments, the user may selectively use the conventional mechanism for playing audiovisual data to play multimedia data or use the mechanism for playing audiovisual data of the present invention to play multimedia data. That is, the audio-visual playback controller 54 of the present invention can operate normally according to the conventional mechanism for playing audio-visual data or the mechanism for playing audio-visual data of the present invention. Therefore, the purpose and operation mode of the audio-visual playback controller 54 of the present invention is very flexible ( flexible). In addition, the la σA 5 7 shown in FIG. 2 may include a plurality of speaker uni t, which is used to generate excellent surround sound effects when the computer system 40 plays a movie. For the audio-visual playback controller 54, the audio-visual playback controller 54 may be a single chip provided on the motherboard or an expansion slot (slot) or connector that is electrically connected to the motherboard. Card (expansion card). For example, the system-on-a-chip (S0C) technology has been very successful ^ So the video decoder 5 8, conversion circuit 6 0, audio decoder 6 4 and video transmission circuit 62 can be used. It is integrated in the same chip and therefore corresponds to a smaller chip size and lower power consumption, and the chip is used as a multimedia playback system to process image data and sound data recorded on a music disc. If the playback controller 54 is installed on the expansion card, the activation of the video playback controller 54 is mainly based on whether the required operating voltage is input to the video playback controller 5 4 through the corresponding slot or connector, for example. In other words, the expansion card is suitable for pcMCIA slot used in notebook computers or

1223743

V. Description of the invention (16) It is suitable for the PCI slot used by desktop computers, so when the pc μ c IA slot or the PCI slot is powered, the PCMCIA slot or the pc I slot is then An operating voltage can be provided to activate an expansion card with a video playback controller 54. σ 〃, #Notes, the image data can be stored on a compact disc or 2 i magneti'disk). As mentioned above, the computer system 40 / previous disc drive 5 2 captures and records the disc. On-chip information, however,: a Λ disc? "Agnetic disk drive), on-chip riVe), to capture the functional block diagram recorded on the magnetic disk drive-magnetic drive ^ Kangtu one, the optical drive 52 can be expected, the drive is replaced to make the computer system 40 You can access the material data on the disk: 'Magnet! It is attributed to the power block 66b, which is the same for the playback of multimedia, as: ΐ ;; said Ξ magnetic = operation and operation block diagram of the optical disc drive 52 to explain The magnetic ^ 4 directly uses the light tablet shown in the functional square of Figure II: I: =. Assume-the conventional disk drive replaces the system 40 without booting. 2f is placed in the computer system 40. When the computer system Optical disc drive 52—normally two === The disk drive in source block 66b can act as the audio playback controller 5 j π, and the multimedia data on the disk can be converted to video ”to output more corresponding video == 二 影音The playback controller 54 then drives the screen brain system 40 to perform playback, which is the expected image. Similarly, when the electric 2 disk drive can be started, the multimedia data 52 on the chip in the power block 66b is generally directly transmitted and recorded on the disk + to the audio-visual playback controller 54 without output; 1223743 V. Invention Description (17)

Media information to South Bridge Circuit 4 6 to go through South Bridge

Control and processing of 'Ran ·, audio and video playback controller: J storage area storage drive output storage device (such as a CD player or a disk drive must be set; =, Λ is used to output the required multimedia data At the time of Λ, the multimedia data needed by the data storage m located in the power block 66b is sent to the audio-visual playback controller 54. The controller 54 directly processes the data of the multimedia media; the main purpose of; Heart 4, ¾

Compared with the conventional computer system, the audio playback controller can operate normally when the power is off. It should be based on the video data of the movie, and the opening of the eighth meeting. In other words, the multimedia data is played. Due to the power consumption generated during this process, there is no need to start the computer system to completely play multimedia data in the brain system. Therefore, the computer system is used to play the computer system to complete the lengthy boot process. The computer system executes the boot process, thereby reducing it. If the computer system of the present invention includes a video brain system that does not perform a boot process and therefore ^ so if a user wants to play a pair of 'only audio and video playback controllers,' the word said, the computer system of the present invention consumes only some of the components Electricity is reduced due to local conditions. In addition, because the user can use the power to enter the power-on state, the user can use the media conveniently and simply, without waiting for the second order. In addition, because the power consumption of the computer system does not need to be started, the power consumption has also been entered. State of the invention

1223743 V. Description of the invention (18) The audio playback controller can directly process the multimedia data without the intervention of the south bridge circuit and the central processing unit. Therefore, under this condition, the power consumption of the computer system is reduced accordingly. The above description is only a preferred embodiment of the present invention, and any equivalent changes and modifications made in accordance with the scope of the patent application of the present invention shall fall within the scope of the patent of the present invention. 〇

Page 24 1223743 Brief description of the drawings Brief description of the drawings Figure 1 is a functional block diagram of a conventional computer system. FIG. 2 is a functional block diagram of the computer system of the present invention. Schematic symbol description

Page 10 &gt; 40 Computer system 12 ^ 42 Central processor 14, 44 North bridge circuit 16 ^ 46 South bridge circuit 18, 48 Memory 20 Optical drive 22 Display system 24 Input device 26 ^ 56 Screen 28 ^ 50 Display control circuit 30 &gt; 62 Video transmission circuit 51 Sound effect processing circuit 52 Optical disc player 54 Video playback controller 57 Stinger 58 Video decoder 60 Conversion circuit 64 Sound effect decoder

Claims (1)

1223743 VI. The scope of the patent application is to play a multimedia asset ng unit, which is used to read the multimedia electrical connection between the central processing unit and the system's video and audio playback device; to the video and audio playback control data; and Data, and a method for driving a computer system (computer system), the computer system includes: a central processing unit (central processi CPU) used to control the operation of the computer system; a storage device (storage device), a system Data; a bridge circuit, between the processor and the misstored device, used to coordinate data transmission between the storage devices; and an output device; the method includes: the controller provides a video playback controller to The computer is controlled by the storage device and the output device, and the storage device transmits the multimedia data. 1 f Start the bridge circuit to process the multimedia. Use the video playback control to pull the output device to play the multimedia: Xi Media 2 · If the scope of application for patent correction, +, &gt; +, is provided to the video playback controller and the output method, it also contains Voltage, without supplying the central processing operation required for operating the set ^ F ^ operating voltage. 15 〃 5 required for bridge voltage operation 3. As described in item i of the scope of patent application /, τ violation storage device mountain 3743 (It is an optical disk drive) 〇 • If the patent application material is stored * = ® The method described in item 3 of an optical disc, where the multimedia optical disk) is DVD) If the patent is applied for The method described in item 4 of the range digital function disc, wherein the optical disc is a digital versatile disk, =: the method described in item 4 of the patent scope, wherein the optical disc is a video compact disk, VCD). 7. The method as described in item 4 of the scope of patent application, wherein the optical disc is a Nikola compact disc (aud i 0 compact disk, aud i 0 CD). 8. The method as described in item 1 of the scope of patent application, wherein the storage device is a magnetic disk drive. 9 · The method as described in item 1 of the scope of patent application, wherein the computer is a laptop computer or a desktop computer. 10. The method as described in item 1 of the scope of patent application, wherein the rotation includes at least one screen (monitor). Device 1223743 6. Scope of patent application 1 1. If you apply the controller calculation circuit (: video use the video, first use the number change, and the first image signal use the video according to the screen. Please patent the first range The method described in item 〇, wherein the video broadcast package includes a shirt decoder (V ide ode C 0 der), a scaling circuit, and a video transmission circuit transmitter), and the method further includes: ^ decoding The decoder decodes the multimedia data to produce a shirt-like image signal. Second, the first image signal is converted into a second image signal. The image signal corresponds to a first display resolution, and the second system corresponds to a A second display resolution; and a $ pass wheel circuit to transmit the second image signal to the screen, and according to the second image signal, the image corresponding to the multimedia data is displayed. , Where the output device contains at least one speaker. In particular, I 1 3 · As the method described in item 10 of the patent scope, wherein the audio-visual playback controller includes an audio decoder (audiode decoder), and the method further includes: using the audio, the decoder decodes (Decode) the multimedia data to generate a 4 / sound signal and use the sound decoder to output the sound signal to drive the speaker. 1223743 VI. Application for patent scope 1 4. The method as described in item 1 of the scope of patent application, wherein the central processing unit, the video playback controller, and the bridge circuit are all arranged on the motherboard of the computer system . 1 5. The method as described in item 1 of the scope of patent application, wherein the central processing unit and the bridge circuit are both disposed on a mo the r board of the computer system, and the video playback controller is disposed on An expansion card is connected to the motherboard. 〇 Page 29