CN100412758C

CN100412758C - Computer for playing music by low power con sumption to operate CD driver

Info

Publication number: CN100412758C
Application number: CNB031577660A
Authority: CN
Inventors: 陈瑞和; 官清标
Original assignee: Compal Electronics Inc
Current assignee: Compal Electronics Inc
Priority date: 2003-08-28
Filing date: 2003-08-28
Publication date: 2008-08-20
Anticipated expiration: 2023-08-28
Also published as: CN1591285A

Abstract

The present invention relates to a computer for operating an optical disk drive to play music with low electrical power consumption, which comprises the optical disk drive, a system controller, a processor and a keyboard controller, wherein the system controller connected with the processor is connected with the optical disk drive through an IDE bus. When the computer is in a normal mode, the processor controls the optical disk drive to process the music by a control signal through the system controller, and the keyboard controller is connected with the optical disk drive through a sequence bus. When the computer is in a music playing mode, the keyboard controller has nothing to do with the processor and can transfer the control signal to the optical disk drive through the sequence bus so as to make the optical disk drive process the music.

Description

Carry out the computer of music with low power consumption operational light disk drive

(1) technical field

The present invention relates to a kind ofly carry out the computer of music, particularly relate to a kind of serial bus that utilizes and control CD drive, build the computer that is set to this to reduce its integral body with low power consumption operational light disk drive.

(2) background technology

Desktop computer or notebook computer, its function is carried out specific application program to carry out the work such as document, Flame Image Process and program editing except being used for, and also can be used as individual's multimedia platform.

Because light CD, digital video disk optical storage medias such as (DVD) popularizes at present, therefore all be equipped with CD drive to be used as reading the media of optical storage media in the computer of the overwhelming majority, except being used as the function of general data access, CD drive itself also possesses playing back music CD (CD-A is arranged, defined by Red Book) function, reason is that inner firmware and the hardware put built of CD drive can have been decoded at the music data of music CD, after carrying out the digital-to-analog conversion subsequently again, can export on the loudspeaker and be broadcasted.

Under general situation, the user is if think the playing back music CD, then must allow computer be in the situation of " standard-sized sheet ", in other words, must allow processor in the computer, operating system etc. keep running, can control the broadcast that CD drive is carried out music with application program, yet if only with the broadcast of computer as music, then all be consumed on the CD drive electronic component in addition because of most electric power, therefore extremely uneconomical, particularly for notebook computer, the electric power of its battery is easier so consume in a large number and exhaust.

Consult Fig. 1, because above-mentioned shortcoming, therefore develop at present and so-calledly can carry out the computer 200 (or claiming need not start shooting to carry out the computer of music) of music down at park mode (suspend), its inside has mainly comprised a processor 21, a system controller 22, a power source management controller 23, a CD drive 24, a CD drive controller 25, a keyboard controller 26 and a hard disk 27.And under this park mode, processor 21 is not supplied to power supply with hard disk 27, has only CD drive 24, power source management controller 23, and keyboard controller 26 etc. is supplied to power supply.

Under normal mode, be to transmit control signal (ATAPI) to CD drive 24 by processor 21, system controller 22.When at park mode, then be to utilize keyboard, mouse etc. to send a signal on the keyboard controller 26, send via CD drive controller 25 again and control signal on the CD drive 24, make actions such as CD drive 24 is carried out the broadcast of music, stopped, time-out.

Because under above-mentioned two kinds of different modes, all be to carry out the transmission of control signal with the IDE bus 30 that connects CD drive 24, therefore except the extra CD drive controller 25 of needs, the transmission that also needs a traffic pilot 28 (also have CD drive controller 28 and traffic pilot 25 are combined) to switch control signal in the different mode, therefore required hardware is built and is set to that this is very considerable.

(3) summary of the invention

The purpose of this invention is to provide a kind of with low build be set to originally can construction go out required hardware carry out the computer of music with low power consumption operational light disk drive.

The present invention comprises a CD drive, a system controller, a processor and a keyboard controller with the computer that low power consumption operational light disk drive carries out music.

This CD drive is can be subjected to the control of a CD drive control signal (ATAPI control signal) and carry out the processing of music, for example plays, stops, suspending, a last song, next song, withdraws from etc.This system controller is to be connected with this CD drive with an IDE bus, this processor is to be connected with this system controller, when this computer under a normal mode, this processor can be via this system controller, controls this CD drive with a control signal and carries out music and handle.

This keyboard controller is to be connected with this CD drive with a serial bus, when this computer under a music playing mode, this keyboard controller is irrelevant with this processor, this keyboard controller also can transmit this via this serial bus and control signal on this CD drive, makes this CD drive carry out music and handles.

Computer of the present invention can be worked under this normal mode and this music playing mode, when at this music playing mode, processor, system controller are not powered, so keyboard controller is to be independent of outside this processor, therefore can control CD drive with low power consumption carries out music, more preferably, owing to be to utilize the extra serial bus that is provided with to carry out the transmission of control signal under the music pattern, therefore can reduce hardware builds the cost of putting.

(4) description of drawings

The present invention is described in detail below in conjunction with drawings and Examples, in the accompanying drawing:

Fig. 1 is a synoptic diagram, and the computer that in the past carries out music with low power consumption operational light disk drive is described; And

Fig. 2 is a synoptic diagram, illustrates that the present invention carries out a preferred embodiment of the computer of music with low power consumption operational light disk drive.

(5) embodiment

Consult Fig. 2, the present invention mainly comprises a processor 1, a system controller 2, a CD drive 3, a keyboard controller 4, a power supply unit 5 and a power source management controller 6 with the preferred embodiment of the computer 100 of low power consumption operational light disk drive 3 playing back music.For the purpose of simplified illustration, other is such as dynamic RAM (DRAM), ROM (read-only memory) (ROM), RTC chip etc., because these are that person skilled in the art person can understand easily, so do not specialize at this, only just the main start of the present invention partly is illustrated.

Processor 1 promptly refers to general CPU (central processing unit) (CPU), Intel Company's series such as 80X86, Pentium of producing for example, processor 1 is to use from catching in the storer (figure does not show) to get relevant procedure code, carrying out about each application program, operating system, and the calculating and the execution of driver etc.System controller 2 promptly is meant the South Bridge chip of supporting this processor 1, except the control signal that processor 1 sends being sent to other peripheral element, also can be used for receiving the requirement of each peripheral element, and then processor 1 is sent look-at-me, to obtain the control of processor 1.

Be to interconnect between CD drive 3 and the system controller 2 by integrating electronic type driving interface (Integrated Drive Electronics is hereinafter to be referred as IDE) bus 10 (claiming ata bus again).Certainly, in general computer system, have a main IDE bus and a less important IDE bus usually, and each bus all can connect two IDE/ATA electronic installations again, for example hard disk, CD drive etc. in the present embodiment, are only represented one of them IDE bus 10.CD drive 3 is meant Disc player (CD player), optical disk recording device (CD-RW), digital video disk player (DVD player), or digital video disk cd-rom recorder (DVD-RW) etc. can read the CD drive of music CD.

Be noted that especially, between CD drive 3 and the system controller 2, be with ATA package interface (ATAPI control signal, ATAPI command) is used as the standard agreement of communication between the two, this agreement is to transmit data with the package pattern, therefore CD drive 3 can equally with general hard disk adopt the IDE bus 10 of standard to carry out data transmission, in the present embodiment, ATAPI CD drive 3 is meant the slim optical disc drive (slim CD-ROM) of a standard especially, and (DD6～DD21) carries out the data transmission of 16 bits to 16 stitch in its 50 stitch (pin).

Keyboard controller 4 is connected with system controller 2, under general situation, when the user pushes button on the keyboard (figure do not show), promptly can sending one, to scan sign indicating number (scan code) donating bond disk controller 4 temporary, and send interrupt requests (IRQ1) to system controller 2 by keyboard controller 4, make that processor 1 can be via I/O port (60h) sense data, and be sent on the application program.Certainly, keyboard controller 4 also can receive the coordinate signal of PS/2 mouse, moves with further controlling computer screen upstream target.

On the other hand, keyboard controller 4 also is connected with CD drive 3 by a serial bus 20, in the present embodiment, serial bus 20 refers to the bus that transmits data in the sequence mode, can be non-synchronizing sequence bus, for example RS-232, or synchronizing sequence bus, for example I2C.Because the standard of RS-232 is known by industry, and the further detailed content of I2C has been disclosed in No. the 4th, 689,740, the United States Patent (USP) case, so do not repeat them here.

In order to make serial bus 20 be connected with CD drive 3, therefore be to utilize two pre-standby stitch on the CD drive 3, pin 49 and pin 50, be used as the transmission of serial bus 20 bi-directional datas, owing to built the pin position that is equipped with for sequence transmission on the general keyboard controller 4, therefore can be connected with serial bus 20 easily, particularly, in the present embodiment, when the logical circuit in the keyboard controller 4 is subjected to the triggering of specific keys 41, this specific keys 41 for example refers to specific Macintosh on the keyboard, the extra button that increases, or during the panel of additional designs etc., can make keyboard controller 4 send out the ATAPI control signal, Play_AUDIO_MSF (opcode is 47h) for example, START/STOP_UNIT (opcode is 1Bh), PAUSE (opcode is 4Bh), READ_TOC (opcode is 43h), INQUIRY (opcode is 12h), and be sent on the CD drive 3 by serial bus 20, carry out the processing of music with control CD drive 3, for example play, stop, suspend, last song, back one song, action such as withdraw from.

In order to handle the aforementioned ATAPI control signal that transmits in the sequence mode by keyboard controller 4, must carry out part to the firmware of CD drive 3 inside changes, so that CD drive 3 possesses the ability that the decipher sequence signal is arranged, in other words, because the sequence mode once only transmits the data of a bit, therefore the essential operation code of temporary part earlier after waiting to receive all bits of required operation code and desired data, is carried out the execution of each order again according to operation code.

Power supply unit 5 is to be used for supplying electric power to give above-mentioned each element, when in normal mode following time, power source management controller 6 does not act on, be that each element is all by normal power supply, when a period of time user does not have the action of any input, or the user is when directly selecting music playing mode with application program, power source management controller 6 is promptly according to the order of processor 1, close each element and be connected to the special transistor (S1～S3) of power supply (VCC), to cut off the supply of its power supply, make power supply only be supplied on CD drive 3 and the keyboard controller 4 and can reduce power consumption, under this pattern, because processor 1 do not act on, so keyboard controller 4 is to be independent of outside this processor 1 and not to be subjected to the control of processor 1.

The flow process of CD drive control signal below is described respectively under normal mode and music playing mode (park mode):

(1) normal mode-

Under normal mode, the user can utilize application program, for example Windows " media play procedure " (media player) or " CD playing program ", send the order of control CD drive 3 playing back music, pending device 1 is sent to control signal on the CD drive 3 via system controller 2, IDE bus 10, just can carry out the control of music.

(2) music playing mode-

Under music playing mode, via pushing of specific keys 41, just can transmit ATAPI and control signal on the CD drive 3 via keyboard controller 4, serial bus 20, make CD drive 3 carry out music, need not control via processor 1.Owing to only supply electric power to CD drive 3 and keyboard controller 4, therefore for normal mode, can reduce the consumption of most of electric power.

Comprehensively above-mentioned, the present invention utilizes keyboard controller 4 to transmit the ATAPI control signal via serial bus 20, therefore need members such as traffic pilot, CD drive controller in the past, except carrying out the broadcast of music with low power consumption, also reduce whole hardware and build and be set to this, reach purpose of the present invention really because reduce known member.

Claims

1. computer with low power consumption operational light disk drive playing back music is characterized in that including:

One CD drive can be controlled and carry out the processing of music;

One system controller is connected with this CD drive with an IDE bus;

One processor is connected with this system controller, when this computer under a normal mode, this processor can be via this system controller, controls this CD drive with a control signal and carries out music and handle; And

One keyboard controller, be connected with this CD drive with a serial bus, when this computer under a music playing mode, this keyboard controller and processor are irrelevant, this keyboard controller also can transmit this via this serial bus and control signal on this CD drive, makes this CD drive carry out music and handles.

2. computer as claimed in claim 1 is characterized in that: this serial bus is the asynchronous serial bus of a RS232.

3. computer as claimed in claim 1 is characterized in that: this serial bus is an I2C synchronizing sequence bus.

4. the method for a control CD drive playing back music in a computer is characterized in that comprising the following step:

Under a normal mode, transmit one with a processor by an IDE bus and control signal on the CD drive, make this CD drive carry out music and handle; And

Under a music playing mode, transmitting this with a keyboard controller by a serial bus controls signal on this CD drive, making this CD drive carry out music handles, thereby controlling signal to CD drive with low power consumption operation CD and described transmission is to carry out under the music playing mode of a low power consumption at this computer, and this keyboard controller and processor are irrelevant.

5. method as claimed in claim 4 is characterized in that: transmitting this step that controls signal on this CD drive is to carry out under the music playing mode of a low power consumption at this computer.

6. method as claimed in claim 4 is characterized in that: this serial bus is the asynchronous serial bus of a RS232.

7. method as claimed in claim 4 is characterized in that: this serial bus is an I2C synchronizing sequence bus.

8. method as claimed in claim 4 is characterized in that: the processing of this music is the broadcast of carrying out music, stop, suspending, next song and one of them action of last song.