TW494389B - Integrated circuit applied on CD-MP3 player and power-saving method thereof - Google Patents

Abstract

The present invention mainly relates to an integrated circuit applied on CD-MP3 player and power-saving method thereof. In order to minimize the number of the required integrated circuits and circuit components in the whole system, all the major cores, such as MP-3 decoding core, compact disc data processing core, compact disc servo control core, system microprocessing core, and voice frequency D/A converting core, are integrated a CD-MP-3 single-chip integrated circuit. By applying such technical architecture, only 4 to 6 integrated circuits are required to complete the system design of CD players that can play all types of music compressing formats, e.g. MP-3, in accordance with different function requirements. Since one of the MP-3 specialties is to compress the data volume down to below 1/10 of its original data volume, the power modal control loop can be switched to one of the newly developed control modals, such as velocity-reducing control technical modal, intermittent servo control technical modal, and temporary memory control technical modal, in accordance with the system operation conditions while the player is reading an MP-3 disc. Also, the fundamental frequency rate of each operation component, e.g. servo decoder, in the integrated circuit can flexibly be reduced during operation to accomplish the purposes of power saving and operation noise reduction.

Description

494389 V. Description of the invention (1) The present invention is an integrated circuit and a power saving method which can be applied to a CD-MP3 playback device. It mainly includes an MP3 decoding core, an optical disc data processing core ~, an optical disc drive servo processing core, The system micro-processing core and audio digital-to-analog conversion core are integrated into the CD-MP3 single-chip integrated circuit, and a power modal control loop is applied to achieve the goal of power saving. According to the 'used CD player that can read MP3 and other music compression formats, it requires more 1C and circuit parts; please refer to Figure 1, which is a system architecture diagram of a conventional CD player that can read MP3. ; As shown in the figure, the CD reading mechanism 1 is connected to the radio frequency amplifier 2, and the digital signal processor 8 is connected to the radio frequency amplifier 2 ', MP3 scorpion descaler 315, and the drive of the actuator or actuator = road ^ The system microcontroller 32, and the electronic shock-proof buffer memory 4, are connected. • The frequency digital-to-analog converter 316 is connected to the Mp3 decoder 315, and the microcontroller 320 ′ is connected to the external program memory 5. VFD or LCD drive 6 knows that the actuator is connected to the drive circuit 7 of the actuator; VFD or LCD drive circuit 6 is connected to the drive circuit of the actuator / connected to the 1 ^^ display 62 'to actuate The reader is connected to [, reading the data on the disc and ^ reading mechanism 丨; CD reading mechanism amplifier 2, which will magnify the ^ number to the RF amplifier 2 '; RF decoder 315, which can send MP ^ ί j signal to digital signal processor 8, MP3 bit-to-analog converter 316: uncompressed code Then, the signal is transmitted to the audio digital signal and converted to analog but the audio digital to analog converter 316, the digital signal processor 8 4, can temporarily store the favorite when shockproof, and then output; the electronic shockproof buffer memory is like a station side Data of job shift 1; system microcontroller 3 2 0, can receive data, channel communication signals, and transmit control and display signals to actuators and drives respectively , And VFD or LCD display driver

494389

5. Description of the invention (2) The moving circuit 6 ', so that the CD reading mechanism 1 and the VFD or LCD display 62 can be controlled. Therefore, a conventional CD player that can read MP3 music is planned according to the system functions. It will require 7 to 9 ICs to complete the system design. The large number of circuit parts required in this way will increase the size of the player and Increase the failure rate, making maintenance difficult.

In addition, a conventional CD player that can play MP3 music format. When the player reads and plays MP3 music format CDs, because the system is a traditional CD player architecture, it drives the spindle drive and words of the CD. The server system will continue to operate according to the operating speed when playing ordinary CDs. It cannot use the characteristics of MP3 to compress music data. This will not only consume power, but also reduce the voice generated by the operation of the actuator. The use of this broadcastable project, and the long-term research on difficult points, open expertise, and improvement solutions, lies in the electric method of the disc player, the MP3 can be broadcast after the broadcast has been issued, and the sales knowledge, the final description The question of providing a 'main server control question' mentioning the music format and playing MP3 sounds is a practice sold by the inventors of the present inventor.爰 is a kind of 1C which is applied to the core of MP3, and therefore, the solution can save the inventor's desire for related production and improvement, and has countless CD-MP3 products of the device of the present invention. The integrated disc data section "not only reduces the number of circuit parts and electrical models, but also solves the problems related to the problem." The second attempt is to make a sample circuit, the main purpose circuit and its provincial core, and the music format. I look forward to designing and exploring a single-chip CD-MP3 playback decoding core and unified micro-processing core based on years of experience.

494389

The core and audio digital-to-analog conversion cores are integrated into the CD-MP3 single-chip building block circuit ‘to reduce the Ic and the number of circuit parts S required by the player system’ to reduce the system volume and the total system cost. A secondary object of the present invention is to provide a building block circuit and a power saving method applied to a CD_MP3 playback device, which are mainly implanted in the CD MP3 single-chip integrated circuit, and a newly developed power supply modal control circuit is provided. With ^ MP3, it can compress the data volume to less than one tenth, so that when the player reads MP3 discs, it can switch the power modal control loop to the speed control technology modal and intermittent servo control. One of several newly developed control modes, such as technical mode, temporary memory control technology mode, etc., and lowering the base frequency of the operating units of the internal operating units such as decoding, etc., == low spindle current and current The generated noise can also reduce the power consumption of the cd-MP3 single-chip integrated circuit itself, make good use of each energy, and achieve the purpose of super power saving. In order to make your reviewing members have a better understanding and understanding of the structural features and achieved effects of the present invention ', only a better example diagram and a detailed explanation are provided, as explained below:

First, referring to FIG. 2 is a system architecture diagram of a preferred embodiment of the present invention applied to a player. As shown in the figure, the present invention is mainly provided with a CD reading mechanism connected to a radio frequency amplifier 2, and the radio amplifier 2 is in phase with a CD-MP3 single-chip integrated circuit 3 (also referred to as CD_Mp3 SOC). Connection; the CD-MP3 single-chip integrated circuit 3 is connected to an electronic shock-absorbing buffer memory 4, an external program memory 5, a VFD or LCD drive circuit 6, and an actuator and a drive circuit 7 of the actuator ; With one

494389 V. Description of the invention (4) The VFD / LCD display system 6 2 is connected to the drive circuit 6 of the VFD / LCD, and an actuator and a drive circuit 7 of the actuator are connected to the CD reading mechanism 1. The CD The reading mechanism 1 mainly transmits the read optical disc signal to a radio frequency amplifier 2. The radio frequency amplifier 2 transmits the amplified signal to a CD-MP3 single-chip integrated circuit 3. The CD-MP3 single-chip integrated circuit 3 Can be directly used as analog audio output, and control signals can be transmitted to the drive circuit 6 of the VFD / LCD display and the drive circuit 7 of the actuator and actuator to control the FD / LCD display 6 2 and the CD reading mechanism 1 In addition, the electronic shock-absorbing buffer memory 4 and the external program memory 5 can be directly connected to the CD-MP3 single-servo chip integrated circuit 3 ° Please refer to FIG. 3 and FIG. 4 'It is a preferred implementation of the present invention The block of the example shows the actual circle and 1C internal circuit block diagram. As shown in Figure 3, it is the disc data processing core 3 50, the MP3 decoding core 3 6 0, the system microprocessing core 3 7 0, the optical disc player feed processing core 3 8 0 and the audio digital to analog conversion core 3 9 0 Integrated into integrated circuit 3. As shown in Figure 4, 'a RF analog-to-digital converter 3 10 is connected to the RF amplifier 2 outside the CD-MP3 integrated circuit 3, a data phase-locked loop 3 1 1 and a RF analog-to-digital converter 3 1 0 Phase connection, an EFM decoder 3 1 2 is connected to the data, phase circuit 3 11 is connected, an error corrector 3 13 is connected to the EFM decoupling device 3 1 2, an electronic shock-proof buffer memory processor 3 1 4 is connected to the error Modifier 3 13 is connected to the electronic shock-proof buffer memory 4 outside the CD-MP3 single-chip integrated circuit 3; an MP3 decoder 3 1 5 is connected to the electronic shock-proof buffer memory processor 3 1 4 The audio number 494389

To the analog converter 3 1 6 another pass filter 3 1 7 and audio and the servo mechanism analog RF chip outside the chip integrated circuit 3 3 3 2 and the servo mechanism type servo signal generator 3 3 4 and the servo signal generator 3 The actuator and actuator drive are equipped with a system micro-control 5. Audio digital to analog to electronic shock buffer memory 2. Servo signal generator 3 VFD or LCD drive circuit and MP3 digital to digital amplifier Ratio to servo 3 4 and dynamic loop controller 3 converter 3 processor 3 3 4 and 6 phase decoder 3 1 analog converter converter 3 3 2 phase connection, bit converter 3 mechanism controller CD-MP3 The single crystal 7 phase is connected. 2 0 is connected to the system 16, MP3 1 4 and servo CD-MP3 single crystal; one power is connected to 5 phases, and the other is connected to 3 1 6 phases. 〇Connected to CD-MP3 single crystal-servo mechanism control 3 〇 Phase connection, 3 3 2 phase connection, chip integrated circuit 3 external program memory 3 2 decoder 3 1 5, mechanism controller 3 3 chip integrated circuit 3 External modal control loop

3 2 2 is connected to the system microcontroller 3 20, MP3 decoder 3 1 5, electronic shock buffer memory processor 3 1 4, EFM decoder 3 i 2 and timing generator 3 2 4 and so on; a control and display The decoder 3 2 3 is installed between the EFM decoder 3 1 2 and the system microcontroller 3 2 0. Among them, the RF analog-to-digital converter 3110 converts the analog signal of the RF amplifier 2 into a digital signal, and the data phase-locked loop 3 1 1 is stable.

To determine the time base of the signal, the EFM decoder 3 1 2 can decode the signal into the original data code, the error corrector 3 1 3 can correct the error part of the data code, and the electronic shock-proof buffer memory processor 3 1 4 can The data code is temporarily stored in the electronic shock-proof buffer memory 4 as a reading buffer for the data code. The MP3 decoder can decode music compression formats such as MP3 into ρα music format

Page 9 494389 V. Description of the invention, and it can be converted to servo signals 3 3 2 by external and audio devices 3 1 6 3 3 2 and processed into optical servo and 3 3 4 signals, which are driven by the transmitter. Modal one of the system to power saving mode: Modal (6) SPDIF digital code output to CD-MP3 single chip integrated circuit. 0 Digital to analog converter 3 1 6. Audio digital to analog conversion converts digital signals into The audio analog signal is then low-pass ~ filtered and output to the CD-MP3 single-chip integrated circuit 3. Mechanism analog to digital converter 3 3 〇 The digital signal of the RF amplifier 2 is transmitted to the servo mechanism controller. The servo mechanism controller 3 3 2 depends on the obtained signal: the spindle drive of the disc player, Sliding actuators and actuators, such as focusing track servos, are transmitted to the servo signal. The servo signal generator 3 3 4 converts the servo signal into a drive and outputs it to the CD-MP3 single-chip integrated circuit 3. Actuator and logistics circuit 7. Deng Tong microcontroller 3 2 0 can control and coordinate the power modal control loop of each unit in the loop 3 3 2 can cut the operating frequency, operating voltage and the operating mode of each unit according to the state of the system, so as to achieve its purpose The state includes the following types: When reading traditional non-compressed discs, the system shuts down the liver 3 browning core and stops its operation to save consumption. It is used to read music compression type discs such as MP3, etc. By reducing the operating speed of the spindle drive to; and according to the position of the read data & streaming speed, it can be adjusted down, Decoding, such as the operating time base frequency of each operating unit within the 1C, so that the operating current of the spindle drive and its generated

H9 -—!-V. Description of the invention (7) —_ ί Brother can also reduce the mode of the CD-MP3 single-chip integrated circuit itself. Speed ㈡: operation to save power consumption, I call it = Jin and other music When the compact disc is in the compact format, take the disc's electronic shock-absorbing buffer memory. After reading the memory, the reed: closed Lei: f material is stored in the electronic shock-absorbing buffer, sliding actuator and actuator. The operation of the main shaft drive clothing, wait for electricity to gather ..., and follow the related servo laser and disc drive operation to read again ;: Tracking and other related feeding systems use more than half of the power of the optical disc 11 repeatedly The operation can reduce the amount of power consumption by 3 times and the compression rate can reach ten times: MP;: two :: low and: with a tenth of a minute-about, you can change the operating time. This is an extreme power-saving operation mode 2 continued Play function; servo control technology. I call it intermittent system for reading MP3 and other sounds. When using optical discs more than the three modes mentioned above, the memory is stored in the electronic shock absorber when the optical disc is read. Shockproof buffer memory ^ ^, a large amount of data first light and stop the spindle drive of the optical disc drive, turn off the focus, tracking, etc. of the laser for a long time, slide the actuator and promote the operation of related services, wait until ϋιη 494389 V. Description of the invention (8) = In the memory, the moving laser light to be played and the spindle drive of the optical disc drive are found: when the music is ready, then start the focus of the J actuator, and wait for the master :::: of = The actuator and reading data operate in this manner. In the third mode, the operation mode is lower, and the power is reduced to the memory control technology. It is called temporary memory mode 5. It is used to read MP3 and other music. When the capacity of the electronic shock-proof buffer memory is the first disc, after moving the actuator and promoting self-remembering, only stop the servo circuit, focus, tracking, etc. of some servo loops waiting for the helmet method: Keep the operation of the spindle drive of the optical disc drive, etc. ", "," Temporary storage§ I have found the music data to be played in my body: ^ Then start the operation of the servo of the optical drive's sliding actuator and actuator focusing, compliance, etc., to read the data again. Although the control method cannot save power as the mode three, it can reduce the startup time when reading the data of the optical disc. I call it the semi-intermittent servo control technology.

Go to design the technical structure of CD-MP3 single chip integrated circuit 3 and CD player of 鲛 + Jin 66, 3 music format, only need 4 ~ 6 1C suspect circuit parts, which can make the number of parts Reduce the cost, reduce the system's performance; and the power supply modal control loop 3 2 [system demand state switching system operating frequency, operating voltage and various ... operating modes, to achieve the purpose of ultra power saving.

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494389 V. Description of the invention (9) In summary, a power saving method applied to cd-mp3 broadcasting, which integrates the MP3 decoding core, the optical server 4 server control core, and the system microprocessing core conversion core into the The number of parts of the CD-MP3 single chip misplacement system; and when reading the second f: the control circuit reduces the operating speed of the spindle drive, such as the operation of each internal operating unit in the 1C, the basic frequency power-saving feed control technology can be achieved Power saving and the present invention is really a novel and progressive person, which should meet the patent application requirements. It will undoubtedly be beneficial to apply for 'Qijun Bureau to grant a quasi-patent at an early date, except that the above' is only one of the non-use of the invention To limit the scope of implementation of the present invention. Therefore, the shapes, structures, features, and spiritual ornaments described in the scope should be included in the patent application for simple illustration of the invention: Γ CD reading mechanism 2 'RF amplifier 31 5' MP3 decoder 3 1 6 'audio digital To the analog converter 3 2 0 'The system microcontroller puts the optical disc core and circuit chip at a lower rate, lowers the pace, and makes it feel better. Wherever the volume of data in the so-called surrounding product data is in the audio frequency, And reduce and newly opened noise and can be prayed according to law. Examples Within the scope of this invention. The ship ’s electrical core position to the purpose of the industry can be reduced, and the starting point of the industry and the heart, analog low-broadcast wedge state, the solution of several kinds of 0 only use Mingzhuan, and apply for a patent to change north and repair 0 4 'Electronic shock-absorbing buffer memory 5' External program memory 6 'Drive circuit of VFD or LCD 494389 V. Description of invention (ίο) 7' Drive circuit of actuator and actuator 8 'Digital signal processor 1 CD reading mechanism 2 RF amplifier 3 CD-MP3 Single-chip integrated circuit 310 RF analog to digital converter 3 1 1 Data phase locked loop 31 2 EFM decoder 3 1 3 Error corrector 3 1 4 Electronic shock buffer memory processor 31 5 MP3 decoder 3 1 6 Audio digital To analog converter '3 1 7 Low-pass filter 3 2 0 System microcontroller 3 2 2 Power mode control loop 3 2 3 Control and display decoder 324 Timing generator 3 2 5 System program memory 3 3 0 Servo Mechanism analog to digital converter 3 3 2 servo mechanism controller + 334 servo signal generator 3 5 0 disc data processing core 36 0 MP3 decoding core 3 7 0 system micro processing core

Page 14 494389 V. Description of the invention (11) 3 8 0 Optical drive servo processing core 3 9 0 Audio digital to analog conversion core 4 Electronic shock-absorbing buffer memory 5 External program memory 6 VFD or LCD drive circuit 62 VFD or LCD Driving circuit of display 7 actuator and actuator

Page 15 494389 Brief description of the diagram Figure 1: System architecture diagram of a conventional CD player that can read MP3 Figure 2: System architecture diagram of a preferred embodiment of the present invention applied to the player; FIG. 3 is a block diagram of a preferred embodiment of the present invention; and FIG. 4 is a block diagram of an internal circuit of an IC of a preferred embodiment of the present invention.

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Claims (1)

Scope of six patent applications: An integrated circuit applied to a CD-MP3 playback device, which * contains: Dan is mainly a package-disc data processing core, which is connected to an RF amplifier outside the CD-MP3 single crystal integrated circuit. The core is to convert the analog signal into the digital signal into the chip to complete the signal decoding, interpretation, separation, and debugging; ”an MP3 decoding core, which is connected to the disc data processing core, which mainly handles digital music Decompression of compressed signals; ~ System microprocessing core, which is connected to the MP3 decoding core, which It is mainly responsible for coordinating and controlling the operation of the integrated circuit and responding to external control signals; and the disk drive servo control core, which is connected to the optical disk data processing core and integrated micro processing core. Its main work is based on ^ Disc News The reading situation and the command of the system micro-control core are converted into ^ 2 Wei Wei and other control signals such as the application office to drive the temple service circuit to complete the reading of the optical disc data. Please refer to the product described in item 1 of the patent scope. Body circuit, where the core of the optical disc management system includes M radio frequency analog to digital converter, which is connected to the radio frequency amplifier outside the CD_MP3 single crystal circuit, which has the function of converting the radio frequency amplifier transmission tb η into a digital signal; • If a data phase-locked loop is connected to the RF analog-to-digital converter ^ 'It has a time base error that corrects the signal and stabilizes the output signal. Please refer to the integrated circuit described in item 2 of the patent scope, which also includes a patent-pending scope circuit connection, which has an EFM decoder that is separated and controlled, and is phase-locked back with the data. Function, restore data format and display code for system micro-controller unit. According to the integrated circuit described in item 2 of the scope of patent application, eight of them have an error corrector, which is connected to the EFM decoder, and two = two. The error bit signal is corrected. The integrated circuit described in item 2 of the scope of the patent application, wherein the 22 electronic shock-proof buffer memory processor is connected to the error ‘positive =, which can be based on the use of the electronic shock-proof buffer memory. Temporary storage condition and shock resistance 'Avoid music signals as in the integrated circuit described in item 2 of the scope of patent application, which also contains a control and display decoder, which is connected to the EFM codec ^ system', with processing control And display code for users of the system. For the integrated circuit described in item 1 of the scope of patent application, the storage 3 decoding core includes an MP3 decoder, which is connected to the electronic shockproof memory processor. , Which has a decompressor of data codes such as MP3, etc. /, ^ According to the integrated circuit described in item 1 of the scope of the patent application, which still includes an audio digital-to-analog conversion core, which mainly includes a ^ 2 digital-to-analog converter, which is connected to the MP3 decoder ^, It has digital audio signals converted into analog signals. The integrated circuit described in item 1 of the scope of patent application, wherein 6. Scope of patent application Those who deal with nuclear audio frequency and coordination status. I 0 · If there is the first power modal control encoder and MP3 decoding core requirement status in the scope of the patent application, switch the operating mode of the system to achieve II · If the first scope of the patent application has a low-pass filter, the converters are connected and can be connected Outside the chip integrated circuit, its 1 2 · If the patent application scope is the first timing generator, for CD-MP3 single core contains a bit to the analog transfer 1C unit, the rate is 1 3 · If the patent application scope is the first The system program memory is used to provide the storage system. 14 · If the patent application scope, the servo control core is connected with a servo mechanism controller, and the processing system microcontroller is connected to the MP 3 decoder and converter. Connection, which has a control operation, and the integrated circuit described in the $ item is operated by the display system, which also includes a ^ road system connected to the system microcontroller, EFM solution = and other units, which has a system Operating frequency, operating voltage, and each unit to the best use of energy efficiency. The integrated circuit described in item ^ further includes the wave filter and the audio digital-to-analog conversion to output the analog audio signal to the CD_Mp3 single crystal, which can reduce the high-frequency noise of music. The integrated circuit described above also includes various operating units of the single-chip integrated circuit, such as the power supply modal control circuit, and the time: Item: "Integrated Circuit", which also contains the programs and codes required for operation. The connection is as described in the integrated circuit, and the disc and 3: servo mechanism analog to digital conversion and ... the spindle drive of the disc drive, slide: page 19 494389 The actuator and actuator are needed for focusing and tracking servo, and control signals; and a servo signal generator, which is related to the servo mechanism controller; Jin > .._ 彳 命 久 糸The system is connected to a microcontroller, which can convert the control signal into a drive signal and output it to the drive circuit of an actuator ^ actuator outside the CD-MP3 single-chip integrated circuit. U. The integrated circuit as described in item 14 of the scope of the patent application, which also includes a servo-mechanical analog-to-digital converter, which is connected to the RF amplifier outside the CD-MP3 single-chip integrated circuit. The analog signal required for the servo control is converted into a digital signal. ψ. 16 · — A kind of CD-MP3 power-saving method, which mainly uses the power mode control circuit. When reading the disc, according to the input form of data and data, at least one piece of hardware is reduced in performance to save power consumption. 17. The power saving method according to item 16 of the patent application, wherein when the input of the data data is a traditional uncompressed optical disc, the MP3 decoder is turned off to save power. 18 · The power-saving method described in item 16 of the application patent, wherein when the input of the data data is an optical disc in MP3 music compression format, the steps include: reducing the operating speed of the spindle actuator to 1 Below / 2; and _ Depending on the bit stream speed of the read data, the operating time base frequency of each operating unit in the 1C, such as servo and decoding, can be adjusted to reduce the power consumption of the integrated circuit. 1 9 · The power saving method described in item 16 of the patent application, which makes the data Page 20 6. When applying for a patent for a music-type optical disc, the steps are to store the data in the large-capacity shock-buffer memory when reading the disc data; electronic anti-off = shooting and stopping the optical disc drive The main sleeve actuator, sliding: the operation of the servo related to the focusing, tracking, etc. of the actuator; when the data transmission in the buffer memory of the actuator is about to be completed, and the spindle drive, slide actuator, and focus of the optical disc drive , Tracking, and other related servo operations; and 20, reading the shell so repeatedly can reduce the consumption of the system Dashengdian this * servo drive operation. Most of the time ^ Applies to the power saving method described in item 19 of the patent, 1 § Can the memory use a larger memory? The steps are to store a large amount of data into the electronic shock-absorbing buffer memory when reading the data, then turn off the laser light and stop the spindle drive of the optical disc drive: focus, tracking, etc. of the moving actuator and actuator. ^ Can't find in the temporary memory and restart the laser light and the spindle of the optical disc drive d :: hour 'to read the data again ϊ The operation of the servo; and the power saving method described in the 19th item of the monthly patent, U has 494389 Sixth, the scope of patent application: In order to achieve rapid random reading of the data of the optical disc and store the data in the electronic shock-absorbing buffer memory; stop the operation of some servo loops such as focusing and tracking of the sliding actuator and actuator, and keep it The operation of the spindle drive of the optical disc drive; When the music data to be played cannot be found in the temporary memory, start the operation of the servo of the optical disc drive's sliding actuator and actuator, such as focusing and compliance; And reading the data again can shorten the startup time when reading disc data. 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