JP2007011802A - Reproducing device, reproducing method, and electronic device for removable memory - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reproducing device capable of reproducing immediately only by mounting a removable memory to a reproducing device body in the reproducing device for reproducing the removable memory such as a USB (universal serial bus) memory, and to provide a reproducing method and an electronic device for the removable memory. <P>SOLUTION: The reproducing device automatically turns on a system power supply, changes a function and performs reproducing operation only by mounting the removable memory 29 such as the USB memory to a USB socket 28 provided at the body of the reproducing device 30. The reproducing method and the electronic device for the removable memory are also provided. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a playback device having a USB (Universal Serial Bus) playback function, a playback method, and an electronic device for a removable memory, and in particular, automatically by attaching a removable memory comprising a USB memory to the playback device or the electronic device. The present invention relates to a reproducible reproducing apparatus, a reproducing method, and an electronic device for a removable memory.

  Conventionally, electronic devices that reproduce music and video data recorded on discs such as CD (Compact Disc), DVD (Digital Versatile Disc), CD-R, (CD-Recordable), CD-RW (CD-ReWritable), etc. Is well known. Recently, electronic devices that reproduce data written in a flash memory or HDD (Hard Disc Drive) are also widely used. In this electronic device, if a storage medium such as a flash memory or HDD is built in the electronic device, the convenience of changing data and the portability when playing music become problems. Such a recording medium has a plurality of standards such as a memory stick, an SD card, a compact flash (registered trademark), a smart media, etc., and a problem occurs in versatility. More and more electronic devices are targeted.

  When the user code is transmitted from the above-mentioned removable memory such as USB memory to the main body of the computer or the like via the interface, the content of the user code is compared with the content of the unit code, and if they match, the system is started. Patent Document 1 discloses a computer having a function of permitting activation of a system and disabling activation of the system if they do not match.

  Further, in Patent Document 1, a playback unit in an audio compression format is further added to a removable memory so that it can be used as a player for playing back audio information recorded in a general data recording unit except when the computer is started. Yes. Audio data can also be downloaded from the computer body to the removable memory via the interface. For audio information reproduction, input buttons such as “play”, “stop”, “skip”, volume volume, headphone terminal, etc. may be added, and the standard of the audio compression format is not particularly limited. For example, MP3 (MPPEG) In addition to “MPEG-1 Audio Layer-3”, there is a description that ATRAC3 (Adaptive Transfer Acoustic Coding) can be selected as appropriate.

  Furthermore, if an image photographing unit such as a CCD (Charge Coupled Semiconductor Device) and an image display unit such as a liquid crystal are added to the removable memory, it can also be used as a digital camera. The resolution, the number of shootable images, etc. are often determined according to the capacity of the general data recording unit, and the image compression format is not particularly limited. In addition to images taken with removable memory, there is a description that images downloaded from the computer via the interface to the removable memory may also be displayed, and the functions of the audio playback player and digital camera may be combined. The configuration described in Patent Document 1 intends to realize a security system that does not require a password input from a keyboard.

  Furthermore, an information product having a USB interface, such as a PDA (personal personal digital assistant), a mobile phone, a digital video camera with a USB interface, and a hard disk of a car audio device having a USB interface are connected to each other. Thus, Patent Document 2 discloses a power supply that can acquire an information product and can transmit data or music to a vehicle acoustic device.

  That is, it is possible to supply power to information products with a USB interface on the vehicle and directly from a USB interface portable product such as a mobile phone, a PDA, or a portable MP3 player with a USB socket, image file, movie, character data. Alternatively, music can be transmitted to a car audio device.

  FIG. 4 shows a system diagram of an audio device for a vehicle. A substrate is bonded to the inside of the housing, and this substrate includes a USB control interface unit 51, a CD / VCD (video CD) input processing unit 53, a CD / VCD. A control unit 54, a control panel unit 55, an audio output unit 56, a display unit 57, and a microprocessor unit 58 are provided.

  One end of the USB control interface unit 51 is electrically connected to the USB interface socket 52, and a USB interface portable product such as a mobile phone, a PDA, a portable MP3 player or the like is directly inserted into the USB interface socket 52. A function of transmitting an image file, a movie, character data or music data or taking out a power source is executed.

  In the audio device disclosed in Patent Document 2 described above, a USB device PDA, a portable MP3 player, or the like is inserted into a USB interface socket, and image files, movies, character data, or music data are transmitted or power is taken out. It was made like this.

  Further, Patent Document 3 discloses a USB interface identification device that can determine the old and new versions of USB. In this interface identification device, a determination circuit is provided between the USB interface and the electronic device, and a display device is connected in the determination circuit, and the determination circuit transmits a change in the amplitude of the USB transmission signal (D +, D−). By judging the speed and displaying the judgment result on the display device, the user can determine whether the transmission between the computer and the electronic device is performed at low speed, full speed, or high speed. Discloses a method of using the change in the amplitude of the transmission signals D + and D− for detection of the USB memory.

When the function of reproducing a removable memory having a USB terminal (hereinafter referred to as a USB memory) is realized by a system audio or a stereo player (reproducing device) as disclosed in Patent Documents 1 to 3 described above, this USB is used. The conventional operation that must be performed when playing back a file in the memory is performed as follows.
・ Insert the USB memory into the main unit.
・ Turn on the system power.
-Switch the function to that of the USB memory.
• Press the play key.
JP 2001-339866 A Utility Model Registration No. 3100200 Utility Model Registration No. 3099059

  However, the above-described conventional operation has a problem that it is extremely complicated. The present invention has been made to solve such a problem. By simply inserting a USB memory into the USB socket of the playback device or electronic device main body, the detection of the insertion of the USB memory in the playback device or electronic device can be performed. It is another object of the present invention to provide a playback apparatus and a playback method, and a removable memory electronic device that automatically perform various operations (2) to (4) based on software or hardware.

  A playback device according to the present invention is a playback device having a tangent seat to which a removable memory can be attached and a computer for reproducing or recording at least data of the removable memory inserted into the tangential seat, wherein the removable memory is attached. And when the detection means determines that the removable memory is installed, the computer automatically turns on the power supply of the playback device and sets the function to the removable memory mode to play or record the removable memory. It is a state.

  The reproduction method of the present invention is a reproduction method in which a removable memory can be attached and a removable memory data inserted in the receptacle is reproduced or recorded at least by a computer, and the removable memory is attached. When it is determined by the detection means that detects that the removable memory has been installed, the computer automatically turns on the power supply means of the playback device, sets the function to the removable memory mode, and sets the removable memory to the playback or recording state. It is a thing.

  An electronic device for a removable memory according to the present invention includes a plug seat to which a removable memory can be attached, and a computer for reproducing or recording at least data of the removable memory inserted into the plug seat. When it is determined that the removable memory is installed, and the detection means detects that the removable memory is installed, the computer automatically turns on the power supply of the removable memory electronic device. The function is set to a removable memory mode, and the removable memory is in a reproduction or recording state.

  According to the present invention, the user can automatically turn on the playback device or electronic device system, change the function, and perform the playback operation by simply inserting the USB memory into the USB connector seat of the main body. There is an effect that it is possible to obtain a playback device, a playback method, and a removable memory electronic device that can improve the operability when the USB memory is inserted.

  Hereinafter, a playback apparatus, a playback method, and a removable memory electronic device according to an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a system diagram showing one embodiment of the playback apparatus of the present invention, FIG. 2 is a flowchart of one embodiment of the playback method of the present invention, and FIG. 3 is an overall configuration showing one embodiment of the playback apparatus of the present invention. It is a perspective view.

  The overall system configuration of the playback apparatus will be described below with reference to FIG. 3 before describing the playback apparatus and playback system of the present invention with reference to FIGS. In FIG. 3, the front panel of the casing constituting the main body 21 of the computer has a flat display portion 7 for monitoring at the top, and various operation key groups 5 are provided below the flat display portion 7 for monitoring. Is projected. As these operation key groups, “TAPE”, “DVD”, “TUNER”, “play”, “stop”, “record”, “function switch key”, and the like are displayed on the screen. A CD or DVD insertion opening slit 26 is formed in the upper right of the main body 21. Opening and closing doors 21a and 21b are provided on the lower surface of the panel. A removable memory, that is, a USB memory 29 can be inserted into the opening and closing door 21a (hereinafter referred to as a plug seat). (Referred to as a USB socket) 28 is provided, and a drive unit for recording and reproducing the tape cassette is disposed in the open / close door 21b to constitute a tape cassette player. 22L and 22R are left and right speakers, 23 is a computer display, 24 is a keyboard, and 25 is a mouse. Music data, image data, and the like in the USB memory 29 can be easily heard or monitored via the computer main body 21. It is configured as follows. In the configuration of FIG. 3, only the left and right speakers 22L and 22R are provided, but the back plate of the main body 21 has speaker output terminals for 5-1 channel.

  Hereinafter, the block configuration in the playback apparatus will be described with reference to FIG. In FIG. 1, the playback device 30 includes a USB memory player board 31 and a main computer board 32. In this example, the system audio including a USB memory player board 31 for reproducing the USB memory 29, a CD player 33 for reproducing the CD, a cassette player 34 for reproducing the tape cassette, and a tuner 35 such as AM, FM, TV, etc. will be described in detail. I will write.

  A USB socket 28 is attached to the USB memory player board 31, and the USB socket 28 can be fitted with a base portion 28 a that contacts a base of the USB memory 29 and terminals for transmission data D + and D−. Data D +, D- terminals, GND and VBUS are stored in the CPU chip 1 in which the compressed data from the USB socket 28 is read and the central information processing unit of the computer and the USB controller and the CODEC (codec) are controlled. It is connected. A base portion 28 a of the USB socket 36 is connected to a data line of a main computer (hereinafter referred to as a main CPU) 37 that is provided in the main computer board 32 and exchanges data with the CPU chip 1. This data line is pulled up by a resistor R. The CPU chip 1 is connected to a ROM (ROM) 3 such as a flash memory and an SDRAM (SD RAM) 2. The CPU chip 1 operates according to the ROM information recorded in the ROM 3, reads data from the USB memory 29 and compresses it. Record in SDRAM2. Further, image data is supplied to the CPU chip 1 from the image input terminal VIN, and the image data is output to the image output terminal VOUT via the video amplifier 16. Reference numeral 41 denotes a power supply circuit in the USB player 31.

  An analog-digital conversion circuit / digital-analog conversion circuit (AD / DA) 15 is connected to the CPU chip 1, and digital data from the AD 15 is supplied to the selector 11 disposed on the main computer board 32 side and to the DA 15. Data is supplied from the selector 11. The compressed data recorded in the DRAM 2 is decompressed by the CPU chip 1 and the digital audio signal is converted into analog audio by the DA 15. Further, the decompressed image data is converted into an analog signal, converted into a video format, converted into a composite signal, and then output to the video amplifier 16.

  In the main computer board 32, a CD socket 38, a tape cassette socket 39, and a tuner socket 40 to which various information data from a CD play 33, a tape cassette player 34, and a tuner 35 are supplied are connected to a main CPU 37 via a bus. In addition, the selector 11 is connected so that information data can be supplied from the sockets 38, 39 and 40. The commercial voltage supplied to the commercial power supply terminal ACIN is connected to the power supply circuit 13 that covers the power supply of the entire system, and is supplied to the power supply circuit 41 in the USB memory player 11 via the power supply circuit 13 circuit including a switch controlled by the main CPU 37. It is connected.

  The main CPU 37 for controlling the entire playback device 30 constituting the system audio is instructed to operate audio data and video data from the operation key group 5 and the remote controller (remote controller) 6, and also has the selector 11, preamplifier 10 and flat display. The drive circuit 8 is connected so that output data is supplied from the main CPU 37. Data from the flat display unit driving circuit 8 is given to the flat display unit 7 to process signals of the operation key group 5 and the remote controller 6 to perform an appropriate operation and to output the state to the flat display unit 7.

  The output terminal of the selector 11 is connected to the preamplifier 10, and the output terminal of the preamplifier 10 is further connected to the speakers 22 </ b> L and 22 </ b> R via the speaker terminal SPOUT connected to the power amplifier 14 connected to the muting circuit 9. The main CPU 37 performs DA control, the audio signals output from the CD player 33 and the tape cassette 34 are selected by the selector 11, the volume and sound quality are changed by the preamplifier 10, and the muting operation is performed by the muting circuit 9. The power amplifier 14 converts the signals into signals that can drive the speakers 22L and 22R, and outputs audio signals to the speakers 22L and 22R.

  The USB socket 28 and the CPU chip 1 have USB terminals connected by four signals of SUB transmission signals (VBUS, GND, D +, D−), and emulate a USB memory 29 connected to the USB socket 28. And start communication. The base portion 28a of the USB socket 28 has a signal line (MEDIA-DET) pulled up by a resistor R, and can detect that a medium connected to the base portion 28a and the GND in the USB terminal is inserted. It is configured like this. According to this configuration, when a medium to which the base 28a and the GND in the USB terminal are connected is inserted, the signal logic of the MEDIA-DET is “L”, otherwise “H”. By detecting it, it is possible to detect the presence or absence of the USB memory 29 which is a medium connected to the USB socket 28.

  As another method for checking the presence or absence of media, it is also possible to monitor the terminal lines of USB data D + and D−. Since the USB memory 29 has a pull-up resistor of 15 kΩ at the USB terminal D + at full speed and at the USB terminal D− at low speed, the presence or absence of media can also be confirmed by monitoring changes in these ports with the CPU chip 1. It is possible. In addition, it is possible to determine that the medium is present at an arbitrary time when communication is established, and to determine that there is no medium at other times. In addition, the CPU chip 1 digitally converts the audio signal input from the selector 11 and digitized by the AD 15 and the video signal input from the VIN, compresses it, and records it in the USB memory 29 connected to the USB socket 28. You can also At this time, the AD 15 digitizes the input analog audio signal and passes it to the CPU chip 1. The video signal input from VIN is also transferred to the CPU chip 1 and digitized. The digitized audio / video signal can be recorded in the SDRAM 2 and compressed and recorded in the USB memory 29 connected to the USB socket 28.

Normally, the procedure for reproducing the compressed data recorded in the USB memory 29 is (1) inserting a medium to be reproduced into the USB socket 28.
(2) The operation key group 5 or the remote controller 6 is input to turn on the power supply circuit 13 to turn on the entire system.
(3) Switch to the function to be played.
(4) A reproduction start command is input from the operation key group 5 or the remote controller 6.
Thus, the playback operation is performed.

  The operation of the above-described reproducing apparatus 30 of the present invention for eliminating such complicated processing will be described with reference to FIGS. In the present invention, these series of operations are automated with the detection of media insertion as a trigger. In FIG. 2A, in the first step S1, the main CPU 37 connected to the CPU chip 1 is a removable memory. Whether or not the USB memory 29 is inserted into the USB socket 28 is detected in the “L” and “H” states described above. In the second step S2, the main CPU 37 sets the power supply circuit 13 to the “on” state, in the third step S3, the function is set to the mode of the USB memory 29, and in the fourth step S4, the USB memory 29 is set in the reproduction state to reach the end. Although the flow control of FIG. 2A is performed by the main CPU 37 in the configuration, it is obvious that the flow control may be performed by the CPU chip 1 connected to the main CPU.

  In the flow of FIG. 2A, the system can be realized regardless of the order of the second step S2 and the third step S3 as long as the function can be changed even when the power supply of the power supply circuit 13 is “off”.

  In addition, when realizing these flows, it is obvious that the same effect can be obtained even if a waiting time is provided between each step. For example, in FIG. 2A, the waiting time is not described between S3 and S4, but in the actual system, the function may not be changed for a certain time after the third step S3. In such a case, a waiting time is naturally provided between the processes.

  In addition, a part of the processes of the second step S2 to the fourth step S4 may be deleted. For example, when the insertion of a medium is detected while the power supply circuit 13 of the system is “ON”, it is determined whether the USB memory 29 is inserted in the first step ST1 as shown in FIG. After the function is set to the USB mode in step ST2, the USB memory 29 is set in the reproduction state in the third step ST3. Further, when the power supply circuit is “ON” and the function mode is other than the USB mode, it is natural that the same effect can be obtained even if only the third step ST3 for reproducing the USB memory 29 is automatically performed. can get. The media detection in performing these series of operations can be detected by either the CPU chip 1 or the main CPU 37, although it depends on the power state of the system. Even when the insertion detection is performed by the CPU chip 1, a series of flows can be realized by the main CPU 37 by causing the main CPU 37 to communicate the fact.

  The playback apparatus and playback method of the present invention, the operation of operations such as turning on the power of the entire system, changing functions, playback, etc. when performing playback operation of music and video data recorded on a medium which is a removable memory, Insertion is automatically performed, and whether or not a medium has been inserted is detected by utilizing the state of the USB socket data D + / D- terminal and the connection between the USB socket GND and the base. Improved system audio and stereo player.

  Although the playback apparatus has been described in the above configuration, the present invention is an information product having a USB interface, such as a PDA (personal personal digital assistant), a portable MP3 player, a microcomputer, a cellular phone, and a USB interface digital video camera. It can be applied to electronic devices that have a USB interface such as USB memory, and by connecting these electronic devices to each other, the power to the electronic devices can be turned on and data and music playback with improved operability can be automated. can do. In the embodiment, the automatic reproduction / recording apparatus capable of reproducing / recording audio and recording / recording video has been described. However, the reproduction apparatus (system audio, stereo player) may have a configuration in which an image processing system circuit is removed. Although described with software, it is obvious that it may be configured with hardware.

1 is a system diagram showing one embodiment of a playback device, a playback method, and an electronic device for a removable memory according to the present invention. It is a flowchart which shows one example of the reproducing | regenerating apparatus of this invention of this invention, the reproducing | regenerating method, and the electronic device for removable memory. 1 is a perspective view showing an example of a playback apparatus, a playback method, and a removable electronic device according to the present invention. It is a systematic diagram of the audio equipment for vehicles which has the conventional USB interface.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... CPU chip, 2 ... SDRAM, 3 ... ROM, 5 ... Operation key group, 6 ... Remote control, 7 ... Flat display part, 8 ... Flat display part drive circuit , 9 ... Muting circuit, 10 ... Preamplifier, 11 ... Selector, 13, 41 ... Power supply circuit, 14 ... Power amplifier, 15 ... AD / DA, 16 ... Video amplifier , 21 ... Main body, 22L, 22R ... Left and right speakers, 28 ... USB socket, 29 ... USB memory, 30 ... Playback device, 31 ... USB memory player board, 32 ... Main computer board 33 ... CD player 34 ... tape cassette player 35 ... tuner 37 ... main CPU 38 ... CD socket 39 ... deck socket 40 ... Tuner socket, 41 ··· USB socket

Claims (7)

A playback device comprising a tangent seat to which a removable memory can be attached, and a computer that plays back or records at least data of the removable memory inserted into the tangent seat,
Detecting means for detecting a mounted state of the removable memory;
When the detection means determines that the removable memory is mounted, the computer automatically turns on the power supply means of the playback device, sets the function to the removable memory mode, and puts the removable memory in the playback or recording state. A reproduction apparatus characterized by being made. A socket seat to which a removable memory can be attached, and a playback method for reproducing or recording controlling at least data of the removable memory inserted into the socket seat by a computer,
When it is determined by the detecting means for detecting the state of the removable memory that the removable memory is attached, the computer automatically turns on the power supply means and sets the removable memory in the removable memory mode. A reproduction method characterized by being in a reproduction or recording state. A removable memory electronic device comprising: a receptacle seat to which a removable memory can be attached; and a computer for reproducing or recording at least data of the removable memory inserted into the receptacle seat, wherein the removable memory is installed. Detecting means for detecting a state; and when the detecting means determines that the removable memory is mounted, the computer automatically turns on the power supply means of the removable electronic device, and sets the function to a removable memory mode. An electronic device for a removable memory, characterized in that the removable memory is reproduced or recorded.   2. The detection means detects transmission signals D + and D− transmitted from the removable memory to the connector seat, and detects that the removable memory is attached to the connector seat. The reproducing apparatus as described.   The detection means detects transmission signals D + and D- transmitted from the removable memory to the connector seat and detects that the removable memory is attached to the connector seat. The electronic device for removable memory as described.   The detecting means detects a connection state between a base and a ground terminal when the removable memory is mounted on the connecting seat, and detects that the removable memory is mounted on the connecting seat. The reproducing apparatus according to claim 1.   The detecting means detects a connection state between a base and a ground terminal when the removable memory is mounted on the connecting seat, and detects that the removable memory is mounted on the connecting seat. The electronic device for a removable memory according to claim 3.

Images