KR20080005829A - Read only memory card - Google Patents

Abstract

A read-only memory card is provided to realize a write/erase protect function for prohibiting writing/erasing the contents stored in the read-only memory card to protect the contents recorded in the read-only memory card. An I/O(Input/Output) contact terminal connects bits for inputting/outputting data and address data by connecting to a connector of an external device. A control signal contact terminal is connected to a plurality of control signal lines for read-only usage. A power supply terminal supplies power to the read-only memory card and a ground terminal grounds the read-only memory card. A write/erase protect terminal provides a write/erase protect function for prohibiting the outside from erasing the contents or recording the new contents to protect the contents recorded in a memory device. The memory device is a flash memory(5) and the write/erase protect terminal is a WP(Write Protect) terminal. The WP terminal is internally connected by using a pull-down circuit(6) in a write/erase protect state during an active-low state and using a pull-up circuit in the write/erase protect state during an active-high state. The WP terminal is sealed after the contents are recorded in the memory device at first.

Description

Read only memory card {Read only memory card}

1 is a view for explaining a read-only memory card according to the present invention;

2 is a detailed configuration diagram of an embodiment of a read-only memory card according to the present invention;

3 is a flowchart of an embodiment of a content recording method in which the present invention is used;

4 is a flowchart of another embodiment of a content recording method in which the present invention is used;

5 is a view for explaining a content reproducing apparatus using the present invention;

6 is a block diagram of an embodiment of a content reproducing apparatus using the present invention;

7 is a flowchart illustrating an embodiment of a content reproduction method in which the present invention is used.

* Explanation of symbols for the main parts of the drawings

1, 13: read-only memory card 2: I / O contact terminal

3: control signal contact terminal 4: recorded content characteristic printing surface

5 flash memory 6, 9 pull-down circuit

7, 8, 10, 12: External contact terminal 11: No connection

14: memory card guide groove 15: battery

16, 22: display unit 17: contact terminal

18: decoder and central processing unit 19: internal flash memory

20, 26: switch input 21: read-only memory card connector

23: battery management unit 24: earphone connector

25: WP terminal pad

The present invention relates to a read-only memory card that is prohibited from writing and erasing, and more particularly, the price reduction according to mass production due to the development of process technology and increasing demand of flash memory and the like, and the quality of digital video by various compression technologies. Taking into account the technology trends in which sound and sound quality reaches CD and DVD levels, write desired content (e.g. music, video, text, etc.) on a credit card sized read-only memory card, and write and delete on the read-only memory card. And to protect the recorded contents, and to insert the read-only memory card into a playback device to read and play the recorded contents.

The MP3 player, which is said to be the best revolution in the audio field after the Walkman, uses the MP3 method among various voice compression methods, and rapidly meets the needs of users in accordance with the high capacity and low price of the flash memory and the hard disk. In recent years, the application range has been expanded, such as adopting a color liquid crystal for use in video playback. In particular, MP3 players have the advantage that users can easily obtain and install MP3 and video files through the Internet and install them freely. Another feature is the ability to create a music and video storage warehouse. Initially, the memory capacity was about 128M, but now more than 100G are sold with a built-in hard disk.

On the other hand, various formats for compressing video (eg AVI, ASF, RM / RAM, MOV, MPEG, DivX, etc.) are introduced, and the technology, economic and cost It is complicated by the compatibility with trends and the video formats that consumers already have. While the MP3 method is unique for audio devices that read / write as it is today, the video part has various standards for use and field. have. The most severely hit by the proliferation of video playback devices, including MP3s and computers, is known as the music industry and offline music stores.In comparison with analog methods, digital sound sources have the same sound quality even if they are continuously copied. This is because copyright protection is practically difficult. In response, the music industry is diversifying its business by applying piracy prevention technologies such as digital rights management (DRM) to enter the online single record and ringtone download market.

Recently, a product called "Digital Disc" has been released, which has an MP3 decoder and flash memory built in, records the latest released song in flash memory, and manufactures an MP3 player for playback. In other words, if you purchase a CD, you should insert it into a CD player to listen to it. In the case of such a playback-only MP3 player, it is convenient to listen to music by simply connecting earphones. Unlike the file, it made me feel the joy of holding. However, the product size is rather large and is made in the form of a thick matchbox, which makes it difficult to carry several pieces unlike CDs, and there is a limit to lower the cost because all MP3-related parts are built in the MP3 player. In other words, if there are 10 singer albums, it would fall into the irrational and economically inconsistent contradiction that all 10 MP3 players should be provided, and the video play function cannot be provided.

The new offline media required for the current music market is divided into only one or three songs, like a single album that is purchased and downloaded online, rather than collecting 10 to 20 songs into a single collection and selling them at a high price. Sales of music videos with video clips are also preferred. Of course, it can be produced by inserting only one song on CD / DVD and digital disc, but this is not only price and size, but CD or DVD is strictly a digital sound source, but similar to record and its surface is weak to external shock.

In order to solve all the above disadvantages, a digital memory card type may be provided as an alternative, which may be made of a recording medium having a size and thickness similar to that of a credit card (golden split size 86mm / 53.5mm = 1.607). In addition, various card designs can be printed according to contents to maximize collection value, ownership satisfaction, portability and economy. Particularly, in case of a video sound source such as a music video, the capacity varies depending on the video compression method, but about 60 minutes is provided for 128MB in the case of QVGA screen (available for educational use). In this case, it can be provided within 30MB. In this way, if a new read-only content recording medium and a reproduction-only device are made to be used specifically for the recording medium, the contents of the recording medium and the reproduction-only device are inexpensive and various customized services (such as a single record) can be used. Memory cards that sell music (e.g. music, music videos, texts, etc.) and the music video market, which is stagnant due to lack of playback players, as well as read-only memory cards with various contents depending on the capacity of religious organizations and educational institutions. It is possible to expand the application field, such as the form provided with the regeneration-only device or provided separately. In particular, the maximum playback time is 74 minutes for CDs and 60 minutes to 120 minutes for cassette tapes, but for MP3 system (12M / hour is required for recording at 32kbps, up to 128kbps for music). Since it can be played back, a good educational language tape (80 hours usually requires 80 cassette tapes) is enough for one read-only memory card.

The present invention has been proposed to solve the above problems and to meet the above requirements, and implements a write and erase prohibition function such that an external writing or erasing function cannot be used to protect contents recorded in a memory device. The purpose is to provide.

Other objects and advantages of the present invention can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. Also, it will be readily appreciated that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

According to an aspect of the present invention, there is provided a read-only memory card, comprising: an input / output contact terminal for connecting a bit in contact with a connector of an external device to input and output data and address data; A control signal contact terminal connecting a plurality of control signal lines so as to be used only for reading; A power supply terminal for supplying power; A ground terminal for grounding; And a write / erase prohibition terminal for providing a write and erase prohibition function so that content stored in the memory element can not be deleted from outside or new content can be recorded.

Here, the read-only memory card according to the present invention, since the recorded contents should be maintained even when the power is lost, among the various memory systems (DRAM, flash, SRAM, etc.), the flash memory may be most commonly used. It is also possible to use any type of memory element in which the recorded contents are retained even when the power supply is lost. Hereinafter, a flash memory will be described as an example, but it will be apparent that the present invention is not limited thereto.

Although there are various methods for the flash memory, 48 pins are standard for the NAND flash type, and NOR flash types are packaged for 48 to 88 pins. . When changing this to a general memory card interface method (eg, SD, MMC, CF, memory stick type, etc.), the unit cost increases because components such as a flash card controller must be added separately. As of July 2006, NAND flash memory is priced at $ 2.4 for 32M bytes (8 MP3 songs, 10 minutes for music videos), packaged with TSOP, and supplied in wafer form. The price goes down even further, and the capacity of 4M bytes (32M bits) can be provided at a price level that can activate the single music market. The problem with NOR flash memory is that it is difficult to provide the size and thickness of a credit card when 48-88 pins are directly connected to both play-only devices. Up to now, even if there is a separate component cost, an expensive flash card controller is used, and the number of pins of the connector is 12 pins for SD and 8 pins for the SIM method (with a high-performance CPU).

However, if the purpose of the application is to play only (i.e., read only which prevents writing and erasing) as in the present invention, at least 14 pins (N / I) for NAND flash memory without using a separate flash card controller is required. O 8-pin, CLE, ALE, RE, WE, Power, GND). Smart media cards made by Japan's "Toshiba" are the same in that they do not use a separate controller. However, since the read / write must be supported, there are as many as 18 pin contacts. As in the present invention, the contents recorded in the recording, education, and religious use only use the reading function of the memory card, and the user pays the cost and protects the purchased content. In order to prevent random deletion and writing of new data to the memory card, in the present invention, the WP (erite protect) signal among the signals that are provided to be controlled externally is internally pulled down to be in an active state. The big difference is that writes and erases are forbidden. However, in the process of authenticating the validity of the content, the WP pin may be activated to perform a predetermined authentication process. However, even at this time, since it is not related to the content data area for recording the content data, it can be referred to as read-only which is prohibited from writing / erasing (deleting). In addition to inexpensive flash memory, one-time memory such as EEPROM or One Time Programmable (OTP) EPROM, and other types of memory that do not erase data even when power is lost, are used to provide pins as read-only memory cards. It can be said that it is included in the scope of the present invention.

MP3 or a separate video compression playback device has a special minimum 14-pin socket to read the read-only memory card of the present invention (separately read / busy output (R / B) pin and CE ( Chip enable) Implement pins to be connected when needed) It is a simple form that reads the contents of a read-only memory card and decodes them in a decoder to play the contents. There is a big difference in that it does not have a flash memory for storage. If you install flash memory separately, copy the contents of the read-only memory card to the internal flash memory so that the contents can be played even if the user removes the read-only memory card from the socket. Should be.

Accordingly, the playback apparatus according to the present invention includes a content compression decoder, a simple switch input unit, a display unit such as a liquid crystal or LED lamp, an earphone connector, a battery management unit, and a read-only memory card connector for connecting the read-only memory card of the present invention. It is done by Here, the decoder tends to be provided mostly as an on-demand semiconductor (ASIC).

As flash memory replaces most recording media, production is rapidly increasing. In the case of flash memory, memory cell size is gradually decreasing with increasing memory capacity, and a bad bit or bad block inevitably occurs. (bad block) is classified as a single product defect when more than a certain standard (1G bit class has 20 bad block allowances out of a total of 1024 blocks). In a standard memory card, important data or files are recorded, so bad bits or bad blocks are fatal and bad parts cannot be used. However, as in the present invention, audio (eg, wave files, etc.), video, etc. When the same content is recorded on the memory card and played back as read-only, even if there is a bad bit or bad block, the sound and the video are deformed for a very short time. You can use bad flash memory that is discarded because you can't notice the difference at all, giving you a more affordable read-only memory card.

In the present invention, the read-only memory card is made like a credit card and designed and printed according to the content characteristics of various sound sources and videos (there is no owner touchable when purchasing and downloading MP3 files online) to feel the value of possession. It is possible to reduce the memory capacity of single records, etc. necessary to improve the competitiveness of recording companies, and to provide audio Bibles, Buddhist scriptures, and educational materials from religious and educational institutions on the spot, unlike CDs. It is provided with a simple playback device made exclusively for playback. Alternatively, if the user already has a playback device, it is possible to remove the playback device and provide only a read-only memory card for recording contents. It is preferable for copyright protection that contents stored in such a read-only memory card are recorded in a modified form using a technique such as DRM that prevents illegal copying, rather than the original MP3 sound.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, whereby those skilled in the art may easily implement the technical idea of the present invention. There will be. In addition, in describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First, in order to help the understanding of the present invention, the following is a detailed description of the technical gist of the present invention.

The present invention intends to record contents in a flash memory and use them only for reproduction such as a single recording. To this end, the present invention prevents a user from randomly deleting the contents (contents) of the memory card or writing new contents (contents) on the memory card. Input / output (I / O) and control signals for reading the data (contents) of the memory by prohibiting the write and erase functions by performing an internal pull-down of the signal of the (Write Protect) terminal. By connecting the terminals with external contact terminals, a read-only memory card is implemented in a form similar to a credit card. In this case, if you make the WP terminal part as a contact pad (capable of sealing with tape or printing or enabling only pins for authentication at the time of final distribution) to control when needed from the outside, you can manufacture a read-only memory card. Instead of pre-recording the contents in the flash memory at the time, the contents can be recorded after the final printing of the surface of the read-only memory card, which is the final step, so that the inventory can be managed more efficiently.

As described above, in the present invention, the write and erase prohibition functions are implemented in the memory card, which records various contents such as single recordings, religious materials, educational materials, etc., and adds the content cost to the memory card manufacturing price. This is because the content should not be deleted arbitrarily. That is, in the case of various standard memory cards, such as existing smart media, the user can delete / modify the contents arbitrarily, and thus the recording medium cannot be used immediately for such purposes (read-only). Depending on the characteristics, the write / erase prohibit function can be disabled, or the content can be recorded even when using various memory cards that support multiple standard interfaces, and the content can be locked and protected from being deleted or changed externally. Lock function: In case of SD card, user can select arbitrarily with slide plate, which is not suitable for contents protection purpose).

In addition, as described above, if a large number of external contact terminals come out, reliability and cost increase, so the number of terminals should be minimized. In the present invention, at least 14 pins (I / O 8 pin, ALE, CLE, RE, WE, Power, GND) is enough, but in order to support additional functions in the future, use R / B terminal and flash memory to indicate the operation status of flash memory. If not, a CE terminal may be further included in the external contact connector to enter standby mode to reduce current consumption. In this case, the write / erase prohibition terminal is provided in an internally pulled down state so that external devices cannot control it arbitrarily.

On the other hand, flash memory processes are now reaching 50nm (meaning 0.00625 square microns per bit), which is 25% less area per unit compared to the previous 60nm process, resulting in bad bits (bad Yield is known to be 95%, which increases the probability of bit or bad block. However, at present, most of the flash memory in which bad bad bits have occurred are discarded. Memory cards used in mobile phones, personal digital assistants (PDAs), and digital cameras (eg ZD, CF, MMC, mini SD, etc.) read, write, and delete important data, making them significantly cheaper than normal components. Bad bit Flash memory is not available. However, when a bad bit flash memory is used to record read-only content (such as a sound file or a video in a wave file form) as in the present invention, the user cannot recognize the bad bit at all. (When 1 byte is broken, MP3 theoretically affects only 8bit / 128kbps = 0.0000625 seconds).

Alternatively, the present invention provides address list information, applied encryption scheme information, baud rate, caption data, date, and online for each list in the header data area recorded in the front of the content data address area of the flash memory. It implements to include bad bit information together with content characteristic information such as unique serial number for registration and the like, and the previous content reads the following content data information except the bad bit part in the playback device. By implementing the data in such a manner as to be automatically converted into a reproduced content signal, the use of a bad bit area can be essentially avoided. To this end, in the present invention, since the bad bit information is known in the process of writing and re-reading and verifying the content at the time of manufacturing the memory card, the content data is skipped over the bad bit. The bad bit information is recorded in the header data area. However, since there may be bad bits in the header data area, in the present invention, a plurality of header data areas are provided to search for areas where there are no bad bits and record the header data only there. Therefore, when the reproducing apparatus first connects with the memory card to retrieve the header data, the reproducing apparatus sequentially checks the predetermined header data area, and reads the normal header data when the area where the data is recorded is found.

In addition, the present invention takes the form of a card that is easy for the user to carry, so that one side prints a design representing the characteristics of the recorded content, but the opposite side is divided into a checkerboard (4x5 = 20 print areas) to advertise on each side. Can be printed (or 20 won for one 100 won per compartment, and 200 million won for an advertiser), which in some business models will cover memory card and content costs as advertising costs. Can be. Through this, there is an advantage that a business model that can distribute the memory card of the present invention containing a specific sound source and video to consumers for free and inexpensively can be made. At this time, the surface on which the content characteristics or the advertisement image is printed is made lower than the print border surface so as not to wear during use. Alternatively, the advertisement content may be reproduced before the reproduction of the content data starts. This is a business model that cannot be provided by existing media such as cassette tapes and CDs due to limitations in the size, usability, shape, portability, and accessibility of advertisements.

1 is a view for explaining a read-only memory card according to the present invention.

As shown in FIG. 1, the read-only memory card 1 according to the present invention has an input / output contact terminal 2 which connects eight bits in contact with a connector of a recording device or a reproducing device to input and output data and address data. And a control signal contact terminal 3 connecting a plurality of control signal lines for read-only use, a power supply terminal for supplying power, a ground terminal for grounding, and contents recorded in a memory device. To this end, a WP terminal pad 25 is provided to provide a write and delete prohibition function in hardware such that content can not be deleted or new content can be recorded from the outside.

Here, the control signals that can be used only for read-only use the address latch enable (ALE), command latch enable (CLE), and RE (to support read mode in the case of NAND flash memory, which is most commonly used. Includes Read Enable) and WE (Write Enable) signals. Such a control signal may be configured differently according to a memory method, but is generally similar when the address bus and the data bus are used together. Among the standard memory cards, there is no product configured as read-only (SD card can be put in write-protection mode by sliding the side lock, but it is not suitable for the purpose because the user can operate it arbitrarily). Although there is memory such as OTP EPROM that can be used only once physically, high capacity (up to 1Mbit) is difficult, expensive, and the number of pins is large because the address and data buses are separated.

Basically, the memory device can be written and read. Except for memory devices such as DRAM and SRAM, where power is supplied to maintain data, memory devices that retain data even when power is lost are used to erase and write data. It is designed to control a terminal of the same type as protect. When this terminal is active (set to high or low according to the terminal design), writing / erasing (erase) is prohibited. That is, the write protect (WP) terminal is internally connected using a pull-down circuit when the write / erase prohibit state is in the active low state and a pull-up circuit when the write / erase prohibit state is in the active high state.

Therefore, in the present invention, the WP terminal is fixed in an active state (a pull-down state in the case of flash memory), and is produced. In order to provide recording, the WP terminal pad 25 may be separately installed on the card surface, and the content may be recorded and then sealed by tape or printing covering the terminal pad portion or enabling activation of only a pin for authentication.

2 is a detailed block diagram of an embodiment of a read-only memory card according to the present invention.

As shown in FIG. 2, in the case of the flash memory 5, an address, data, and a command bus are used together, so that the flash memory 5 is connected through the first external contact terminal 7 and the input / output bus is divided among control signals. CLE and ALE are connected to the second external contact terminal (8), and the RE control pin for continuously reading data and the WE control pin for writing the reference address to the third external contact terminal (10). The power supply and ground pins are connected to the fourth external contact terminal 12. At this time, if the WP control pin for setting write protection is write-protected in the low state, it is set low by using the pull-down circuit (6). WP terminal pad 25 of the can be made.

At this time, strictly the chip enable (CE) terminal is always set to the active state, in which case there is a risk that the current will continue to be consumed because it cannot enter the sleep mode. Therefore, the reproducing apparatus can be implemented to replace the role of the CE terminal by controlling to cut off the power supply after reading as much data as necessary. As a result, the CE terminal is implemented to be active-low using a pulldown circuit. The R / B (Ready / Busy) terminal, which indicates that the flash memory is in operation, also has the maximum ready time after the final data is output to the bus, so if the time delay is set for the next operation after that time, It does not need to come out of external contact terminal because it operates.

In the case of using a flash memory as described above, the read-only mode can be supported with at least 14 pins on one surface of the memory card. Of course, CE (9), and R / B (11) can also be connected to the external contact terminal if necessary, but this is only a modified content, and above all, the WP terminal pad 25 is the external contact for the efficiency of the production process The contact pad can be installed separately from the terminal, but when it is finally sold, it is provided so that the user can not arbitrarily manipulate the seal or only activate the pin for authentication.

On the other hand, since the present invention uses a known content recording apparatus, the content recording apparatus will not be described in detail, and the characteristic content recording method according to the present invention will be described in detail with reference to FIGS. 3 and 4 as follows.

3 is a flowchart of an embodiment of a content recording method in which the present invention is used.

First, the central processing unit of the content recording apparatus according to the present invention examines the memory card to identify a bad bit in which a defect has occurred (31), and the central processing unit in an area where no bad bit has occurred. Setting a header data area and a content data area for storing content data (32), wherein the central processing unit writes content characteristic information in the header data area, and a bad bit exists in the content data area Even if the bad bit is ignored, the content data is recorded (33).

4 is a flowchart of another embodiment of a content recording method in which the present invention is used.

First, the central processing unit of the content recording apparatus according to the present invention examines the memory card to identify a bad bit in which a defect has occurred (41), and the central processing unit in an area where no bad bit has occurred. Setting a header data area and a content data area for storing content data (42), wherein the central processing unit writes content characteristic information and bad bit information in the header data area and writes the content data area to the content data area. As there is a bad bit, content data is not recorded in the corresponding bad bit area, but content data is subsequently recorded from the next normal area (43).

Here, look at the modified example of the other embodiment as follows.

First, the central processing unit of the content recording apparatus according to the present invention examines the memory card to identify a bad bit in which a defect has occurred, and the header data area is located in an area where no bad bit occurs in the central processing unit. A content data area for storing content data and a reserved area for recording data to be recorded in a bad bit area, wherein the central processing unit stores content in the header data area. Since characteristic information and bad bit information (address) are recorded and bad bits are present in the content data area, content data should be recorded in the corresponding bad bit area without recording content data in the corresponding bad bit area. Content data is recorded in the reserved area and the next content data is recorded from the next normal area. .

Looking at the content recording method of the two embodiments in more detail as follows.

In the present invention, the WP terminal is separated from other contact terminals and implemented as a pad 25 which can be contacted from the outside of the card, and a signal for canceling the write prohibition of the pad when the content is first written to a read-only memory card (active row In this case, after the write prohibition is canceled by inputting a high signal, the content data is written into the memory device through the input / output contact terminal 2 and the control signal contact terminal 3, and then selectively the pad 25 of the WP terminal. Seal with tape or print, or enable only pins for authentication.

When using a memory card to record content to and play back content on a read-only memory card, the bad bit can be selectively used under appropriate restrictions on content quality, as the user cannot recognize the bad bit at all. A unique serial number for address list information, applied encryption scheme information, baud rate, caption data, date, and online registration for each list in a header data area recorded at the beginning of the content data address area of the It is implemented to include bad bit information together with content characteristic information such as, and the like, and the reproduction apparatus reads the following content data information except the bad bit portion, and then reproduces the preceding content data as the reproduced content signal. By using automatic conversion method, it uses bad bit area It can be fundamentally avoided that. To this end, in the present invention, since the bad bit information can be known in the process of recording and re-reading and verifying the content at the time of manufacturing the memory card, the content data is recorded by skipping the bad bit. The bad bit information is recorded in the header data area.

However, since there may be bad bits in the header data area, in the present invention, a plurality of header data areas are provided to search for areas where there are no bad bits and record the header data only there. Therefore, when the reproducing apparatus first connects with the memory card to retrieve the header data, the reproducing apparatus sequentially checks the predetermined header data area, and reads the normal header data when the area where the data is recorded is found. To protect the external contact terminals of the read-only memory card from static electricity, it is designed by installing a barista or by reinforcing the ground state of the board on which the flash memory is placed. Although the names of the pins have been defined based on the flash memory as described above, most memory devices have similar functions, and the scope of the present invention is limited to the minor operation differences in the timing charts provided by the names and the memory devices. It can not be said.

If the unique serial number of the product is recorded in the header data area and used for online registration, the contents of the read-only memory card according to the present invention are automatically downloaded to the playback device. Copies can be conveniently used without copyright infringement.

By modifying the read-only memory card as described above, the control logic and the control logic can be configured to configure various interface methods (eg, UART, JTAG, SPI, SD, CF, MMC, etc.). Designed as a readable memory device (Flash, EEPROM, etc.), means to limit the memory to read-only to protect the embedded content (unless physically connected and unlocked) (sliding lock of SD card) Such as devices, except for means that are easily manipulated by a user. In the present invention, the product characteristic information, copyright protection information, and information for avoiding bad bits are recorded in the header data area.

5 is a view for explaining a content reproducing apparatus in which the present invention is used.

As shown in FIG. 5, in the MP3 or the separate compression type reproducing apparatus, when the read-only memory card 13 is inserted through the memory card guide groove 14, through the contact terminal 17, the read-only memory card ( Read the data (content) of the 13) and decode and reproduce it in the decoder, and together with the simple switch input unit 26, the display unit 16 such as a liquid crystal or LED lamp, the earphone connector 24 and the battery manager 23 Include. The battery 15 may use a disposable battery or a rechargeable battery, and in the case of using the rechargeable battery, a charging connector is installed externally.

6 is a block diagram of an embodiment of a content reproducing apparatus of the present invention.

As shown in FIG. 6, the MP3 or a separate compression type playback device may select a read-only memory card connector 17 for connecting a read-only memory card 13 and a desired function (for example, playback). A decoder and central processing unit 18 for reading and reproducing data (content) of the read-only memory card 13 connected through the switch input unit 20 and the read-only memory card connector 17. And a display unit 22 such as a liquid crystal or an LED lamp for output, an earphone connector 24 for outputting reproduced audio data, and a battery manager 23 for managing a battery. In addition, a flash memory 19 may be further provided therein for a convenient function such as selecting and storing several songs.

Next, the operation of the content reproducing apparatus according to the present invention will be briefly described with reference to FIG. 7.

7 is a flowchart illustrating an embodiment of a content reproduction method in which the present invention is used.

First, the central processing unit recognizes that the read-only memory card is connected to the read-only memory card connector (71).

The central processing unit reads the header data of the read-only memory card connected through the read-only memory card connector (72).

The central processing unit reads and reproduces the content data (73) excluding the corresponding bad bit area according to the bad bit information of the read header data (73), and outputs the reproduced content data through the output unit. Output (74).

Here, the modified example of the content reproduction method is as follows.

First, the central processing unit of the content reproducing apparatus recognizes that a read-only memory card is connected to a read-only memory card connector.

The central processing unit reads the header data of the read-only memory card connected through the read-only memory card connector.

The central processing unit reads and reproduces the content data in the content data area and the reserved area while excluding the corresponding bad bit area according to the bad bit information of the read header data (73). The reproduced content data is output through the output unit.

On the other hand, there is a limitation that a product such as the digital disc described above can play the purchased content only in the device where the user purchased the device, and the user can listen to the purchased content through his computer or another MP3 or video player. Want. In order to provide this, the playback-only device of the present invention is connected to a computer with a cable, and various kinds of information of purchased contents are placed in their storage box through an authorized web service, and the playback provided by the website is logged in. You can select and listen to the contents you have purchased with the player software, and if you register your own other playback device that supports these services, you can convert the data to download through the authentication process. There are various services that purchase and manage MP3 files online (refer to the service sold for 500 won per song in SKT's Melon service, and the data fee is separate), which are owned by users as data files in cyberspace. Although it is hard to feel the value, as well as the satisfaction to feel while owning a variety of read-only memory card printed with the content of the characterized content as in the present invention, the information to authenticate the authenticity contained therein through a playback-only device or a separate adapter Registration has the advantage of owning in cyberspace.

Above all, the CD size and the user's inconvenience are large to make the single record sale attempted by the offline record industry with the existing CD, and the manufacturing cost of the CD is the same even if recording one song or 20 songs. When using a read-only memory card like this, if you adjust the memory capacity (3 ~ 4M bytes per song in MP3 format or about 30M bytes in 10-minute music video), the memory card manufacturing cost (currently 32M bytes <8 songs recording) > The market price of flash memory is about $ 2.4, theoretically $ 0.30 per song), and above all, the level of bad bits that are not available in standard products such as mobile phones and standard memory cards can be reduced. The flash memory you have can also be used without significant deterioration in content quality. It implements to play, skip the header data based on the read-only memory card (the more content information, authentication information, and the bad bits of information found during production) encounter the bad bits (bad bit). However, since there may be bad bits in these header data areas, a plurality of these areas may be installed (for example, header data storage addresses may be installed in four places such as 0000H, 0100H, 0200H, 0300H, etc. If there is more than 0100H degree, record is recorded at 0200H, if there is more than 0200H degree, it is recorded as 0300H, and if it is not more than 0300H, it is determined to be unusable) and the header data is recorded there only. When the playback device reads the header data for the first time connected to the memory card, the playback device checks the sequentially designated header data areas (0000H-> 0100H-> 0200H-> 0300H), and if it finds an area where data is recorded, then the header is normally Read data and so on.

In addition, since most mobile phone chargers are standardized and all mobile phone users have them, a battery management unit can be implemented so that a low-cost rechargeable battery such as a lithium polymer can be built in, rather than a disposable battery, and can be charged using a mobile phone charger. It may be. Of course, during the initial sale, by providing a portion of the charge, you can listen to the content through the earphones on the spot where you purchase. Since the playback device should not only use music contents but also religion, education, etc., it should be convenient to use. Therefore, if you press and hold the button for selecting the next and previous songs, the playback device performs fast forward and fast reverse functions. And, when using religious and educational content, if the content consists of ** chapter ## clauses, short press moves the verse and long press moves the chapter.

In addition, a separate storage memory can be installed in the playback-only device, and a simple operation (or automatically) can be made by inserting a read-only memory card to copy the contents of the memory card to the storage memory, and a memory card with other contents recorded thereon. By repeating the same process, the same process is repeated, so that the user does not download the desired content by connecting the computer with each other, or does not change the memory card every time, and listens only to the read-only memory cards containing the content they want to listen to. You can easily build your own content storage warehouse just by inserting it into the library. In this case, a problem that arises is how to prevent illegal copying by reading and copying a read-only memory card to another person's playback device. Of course, borrowing a read-only memory card and listening to others by inserting it into your playback device doesn't think it's against copyright as much as you use your current CD or cassette tape. In other words, it is against copyright. In the case of such data files, the operating program of the playback device limits the number of times of listening after installation (copying) to 2 to 10 times (after 10 times, inserting a read-only memory card and reinstalling), or the stored data file. It can not be moved by connecting a cable with a computer or other playback device, or by mutually authenticating a read-only memory card and playback device (e.g., a list of content purchased by a computer If you download from the site <list management function you purchased when you log in, you can install only what you have purchased on your playback device). And unauthorized use. In this case, enter the authentication number of the contents purchased by entering the relevant site (the authentication number is printed on the memory card is printed and unpacked, then unpacked and the authentication number is checked and entered directly through a computer. If you insert a memory card into a playback device or a separate adapter and connect it to a computer, you will automatically receive an authentication number. Since one certification number can only be used in one account online, it is possible to fundamentally prevent illegal duplication, as duplicate authentication is not possible. By downloading the authentication number list of the content memory card purchased by the user to the playback device through this simply by simply replacing the registered memory card to install a plurality of content in the playback device can be conveniently used. Of course, contents not in the downloaded list may be read by playing by inserting a read-only memory card.

On the other hand, the playback device according to the present invention as described above can be implemented not only as a terminal for playback, but also includes a read-only memory card connector for connecting a read-only memory card to the mobile phone and the central processing unit inside the mobile phone. It can also be implemented to read and play data from a read-only memory card. In the same way, the playback device of the present invention is used in various electronic devices such as a personal digital assistant (PDA), digital camera, computer, video player (PMP), MP3 player, audio device, car audio / video device, digital TV, e-book, and the like. Can be implemented in

As described above, the method of the present invention may be implemented as a program and stored in a recording medium (CD-ROM, ROM, RAM, floppy disk, hard disk, magneto-optical disk, etc.) in a computer-readable form. Since this process can be easily implemented by those skilled in the art will not be described in detail any more.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

The new offline media required in the current music market is divided into only one or three songs like a single album that is purchased and downloaded online, rather than collecting 10 to 20 songs into a single collection and selling them at a high price (for example, 2,000 won per song). It is expected to have a competitive feature to activate music videos that have failed due to the lack of popularization of sales devices and internal and external).

Therefore, the read-only memory card having the same function as the present invention can be made into a recording medium having a size and thickness similar to that of a credit card, and various card designs can be printed according to the contents, thereby satisfying the possession value, ownership, portability, and economy. There is an effect that can maximize.

In this way, by implementing a new read-only memory card and a playback device that can be used with the read-only memory card, a low cost advantage and a variety of customized services (single records, etc.) of the read-only memory card and dedicated playback device can be achieved. In addition to revitalizing the music industry that sells sound recordings and contents, religious organizations and educational institutions record various types of content on read-only memory cards according to their capacity and provide them with playback devices or provide them individually. It is effective to enlarge.

Claims (8)

In a read-only memory card, An input / output contact terminal which connects bits for contacting a connector of an external device to input / output data and address data; A control signal contact terminal connecting a plurality of control signal lines so as to be used only for reading; A power supply terminal for supplying power; A ground terminal for grounding; And In order to protect the contents recorded in the memory device, the write / deletion prohibition terminal for providing a write and delete prohibition function so that content can not be deleted or new content can be written from the outside. Read only memory card that includes. The method of claim 1, And said memory element is a flash memory. The method of claim 2, And the write / erase prohibit terminal is a write protect (WP) terminal. The method of claim 3, wherein The WP (Write protect) terminal, A read-only memory card, which is connected internally by using a pull-down circuit when the write / erase prohibit state becomes active in the active low state and a pull-up circuit when the write / erase prohibit state becomes active in the active high state. The method according to any one of claims 1 to 3, The write / delete terminal is Read-only memory card, characterized in that provided in the form of an externally accessible pad, sealed after the content is recorded for the first time. The method according to any one of claims 1 to 3, The write / delete terminal is Read-only memory card, characterized in that provided in the form of an externally accessible pad, so that only the pin for authentication can be activated after the content is recorded for the first time. The method according to any one of claims 1 to 4, And an image indicating characteristics of contents recorded in the memory device is printed on the front surface, and a plurality of advertisement images are printed on the divided back surface. The method according to any one of claims 1 to 4, The memory device, A read-only memory card, characterized by a bad memory device having a bad bit.

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