KR20080018071A - Contents recorder and its method - Google Patents

Abstract

A contents recorder and a method thereof are provided to record wanted contents at a memory card by using an NAND flash memory element while considering position where there occur bad bits, and to prevent an external person from using a write and a delete function for implementing an ROM card such that the NAND flash memory can be used though it has the bad bits. A method of a contents recorder comprises the following several steps. A CPU inspects a memory card implemented by using an NAND flash memory element with bad bits, and checks the bad bits(41). The CPU processes the bad bits by the unit of a block by using position information of the checked bad bits(42). The CPU sets a header data area and a contents data area on a normal block area where there does not occur a bad bit(43). The CPU records contents feature information at the header data area, and records the contents data at normal blocks while not recording the contents data at bad blocks(44).

Description

Content recorder and its method

1 is a view for explaining a read-only memory card used in the present invention,

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

3 is a flowchart of a first embodiment of a content recording method according to the present invention;

4 is a flowchart of a second embodiment of a content recording method according to the present invention;

5 is a flowchart of a third embodiment of a content recording method according to the present invention;

6 is a flowchart of a fourth embodiment of a content recording method according to the present invention;

7 is a flowchart of a fifth embodiment of a content recording method according to the present invention;

8 is a view for explaining a content reproducing apparatus corresponding to the present invention;

9 is a configuration diagram of an embodiment of a content reproducing apparatus corresponding to the present invention;

10 is a flowchart of a first embodiment of a content reproduction method corresponding to the present invention;

11 is a flowchart of a second embodiment of a content reproduction method corresponding to the present invention;

12 is a flowchart of a third embodiment of a content reproduction method corresponding to the present invention;

13 is a flowchart of a fourth embodiment of a content reproduction method corresponding to the present invention;

14 is a flowchart of a fifth embodiment of a content reproduction method corresponding to the present invention.

* 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

Disclosure of Invention The present invention provides a content recording apparatus for recording contents while considering bad bits in a memory card using a NAND flash memory device in which bad bits, which are bad phenomena, and a method thereof for realizing the above method. The present invention relates to a computer-readable recording medium recording a program, and more particularly, to desired content (eg, music, video, text, etc.) on a memory card using a NAND flash memory device in which a bad bit has occurred. recording by taking into account (bad bit), protecting the recorded content by prohibiting writing and erasing of the memory card, and inserting the read-only memory card into a playback device to insert the recorded content into a bad bit. Realizing a content recording apparatus and its method and the method for enabling reading and reproducing while considering The present invention relates to a computer-readable recording medium having recorded thereon a program.

In the case of flash memory, the price is sharply reduced due to the development of production process technology and the increase in demand, and various compression technologies have been developed to improve the quality of digital video and sound sources such as CD and DVD. Digitization is happening rapidly. However, it is currently used as a media medium for storing moving pictures and sound sources, and the use of cassette tapes, CDs, and DVDs is inconvenient compared to MP3 players, which have a limited physical storage time and are widely used. Since the storage medium has a strong analog element that is not suitable for the digitization of the content, recently popular MP3 players use internal memory or hard disk, or standard memory cards such as SD and MMC cards. While standard memory cards are convenient for the user to easily read / write / delete, it is also true that copyrights such as sound recordings are severely infringed. In this respect, the new content media is based on inexpensive flash memory and securely records content data created in various compression formats, and should not be erased (deleted) after the content has been recorded and sold, and easily read by a playback device. It must be capable of supporting both voice, video and text. Memory cards of various standards such as SD cards and memory sticks are being produced, but considering the characteristics of the contents industry, there are limitations in replacing cassette tapes or CDs due to the exclusive function of reproduction, copy protection, and the low price due to the complicated structure. .

The MP3 player, which is called the best revolution in the audio field after the Walkman, uses the MP3 method among various voice compression methods and rapidly replaces the Walkman while satisfying the needs of users in accordance with the high capacity and low price of the flash memory and the hard disk, which are storage devices. In recent years, the application range of color liquid crystal is adopted and used for 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. (E.g., music, music videos, texts, etc.) The music video market, which has been stagnant due to the lack of the music industry and playback players, as well as read-only memory of various contents depending on the capacity of religious organizations and educational institutions. The application field may be expanded, such as being provided in a card and provided separately with a reproducing device or 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 needs, and is implemented by using the NAND flash memory device so that a NAND flash memory device in which a bad bit occurs, which is a bad phenomenon of the memory devices, can be used. Content recording to record a desired content (e.g. sound source, video, text, etc.) on one memory card in consideration of the location of bad bit, and to implement a read-only memory card by prohibiting write and delete functions. Another object is to provide an apparatus, a method thereof, and a computer-readable recording medium having recorded thereon a program for realizing the method.

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.

In the first device of the present invention for achieving the above object, in the content recording device, the bad processing is performed by the central processing unit to check the memory card implemented by using the NAND flash memory device, the bad bit has occurred; A normal block area in which a bad bit is identified, the central processing unit processes a bad bit in units of blocks by using the location information on the checked bad bit, and the central processing unit does not generate a bad bit. A header data area and a content data area, the central processing unit writes the content characteristic information in the header data area, and does not record the content data in the bad block existing in the content data area, but only in the normal block. It is characterized by recording.

In the second device of the present invention for achieving the above object, in the content recording device, the bad processing is performed by the central processing unit to check the memory card implemented by using the NAND flash memory device, the bad bit occurred (bad bit) A normal page area in which a bad bit is identified, the central processing unit processes bad bits in page units by using the position information on the checked bad bits, and the central processing unit does not generate bad bits. A header data area and a content data area, the central processing unit records content characteristic information in the header data area, and content data only in a normal page without writing content data in a bad page existing in the content data area. It is characterized by recording.

In the third apparatus of the present invention for achieving the above object, in the content recording apparatus, the bad processing is performed by the central processing unit inspects the memory card implemented by using the NAND flash memory device, the bad bit has occurred; A normal page area in which a bad bit is identified, the central processing unit processes bad bits in page units by using the position information on the checked bad bits, and the central processing unit does not generate bad bits. A header data area, a content data area, and a reserved area, a central processing unit writes content characteristic information in the header data area, and stores content data to be recorded in a bad page existing in the content data area. The content data is recorded in the reserved area, and the content data is written on the normal page of the content data area. It is characterized by locking.

In a fourth device of the present invention for achieving the above object, in the content recording device, the bad processing is performed by the central processing unit to check the memory card implemented by using the NAND flash memory device, the bad bit has occurred; Checking the bit (bad bit), the central processing unit processes the bad bit in units of divided pages (subpage) by using the position information on the confirmed bad bit, the central processing unit generates a bad bit (bad bit) A header data area and a content data area are set in a normal page area which is not in the normal page area, the central processing unit writes the content characteristic information in the header data area, and does not record the content data in the bad split page existing in the content data area. The content data is recorded only on the normal divided page.

In a fifth apparatus of the present invention for achieving the above object, in the content recording apparatus, the central processing unit inspects a memory card implemented by using a NAND flash memory device in which bad bits have occurred, and thus a failure occurs. Checking a bad bit, the central processing unit processes the bad bit in units of divided pages by using the location information on the checked bad bit, the central processing unit is normal without bad bits (bad bit) occurs The header data area, the content data area, and the reserved area are set in the divided page area, and the central processing unit writes the content characteristic information in the header data area, and is recorded in the bad split page existing in the content data area. Record the content data in the reserved area, and write the content data in the normal divided page of the content data area. It characterized in that for recording the content data.

In a sixth apparatus of the present invention for achieving the above object, in the content recording apparatus, the bad processing is performed by the central processing unit inspects a memory card implemented by using a NAND flash memory device, the bad bit has occurred; A bad bit, the central processing unit processes a bad bit in units of bad areas using the location information on the identified bad bit, and the central processing unit is a normal area in which no bad bit has occurred. A header data area and a content data area are set in the data processing unit, the central processing unit writes content characteristic information and an address of a bad area in the header data area, and normal content without writing content data in the bad area existing in the content data area. The content data is recorded only in the area.

According to a seventh aspect of the present invention, there is provided a content recording apparatus, wherein a central processing unit inspects a memory card implemented using a NAND flash memory device in which a bad bit has occurred, thereby causing a defect. A bad bit is checked, the central processing unit processes the bad bit in units of bad areas using the location information on the checked bad bit, and the central processing unit does not generate a bad bit. A header data area and a content data area are set in the area, the central processing unit writes the content characteristic information and the address of the bad area in the header data area, and does not record the content data in the bad area existing in the content data area. Content data to be recorded in the bad area is transferred to the corresponding address in the header data area. And recording in response, characterized in that for recording the content data in the normal area of the content data zone.

In the first method of the present invention for achieving the above object, in the content recording method, the bad processing is performed by the central processing unit to check the memory card implemented by using the NAND flash memory device, the bad bit occurred (bad bit) Identifying a bit; A block unit processing step of processing, by the central processing unit, the bad bits in block units by using the location information on the checked bad bits; Setting, by the central processing unit, a header data area and a content data area in a normal block area in which a bad bit does not occur; And a recording step of the central processing unit recording the content characteristic information in the header data area, and recording the content data only in the normal block without recording the content data in the bad block existing in the content data area.

The second method of the present invention for achieving the above object, in the content recording method, the bad processing is bad by the central processing unit to check the memory card implemented by using the NAND flash memory device, the bad bit occurred (bad bit) Identifying a bit; A page unit processing step of processing, by the central processing unit, the bad bits in units of pages using the location information on the checked bad bits; Setting, by the central processing unit, a header data area and a content data area in a normal page area in which a bad bit does not occur; And a recording step in which the central processing unit records the content characteristic information in the header data area, and records the content data only in the normal page without recording the content data in the bad page existing in the content data area.

According to a third method of the present invention for achieving the above object, in the content recording method, a bad state is generated by the central processing unit inspecting a memory card implemented by using a NAND flash memory device in which bad bits have occurred. Identifying a bit; A page unit processing step of processing, by the central processing unit, the bad bits in units of pages using the location information on the checked bad bits; Setting, by the central processing unit, a header data area, a content data area, and a reserved area in a normal page area in which a bad bit does not occur; And the central processing unit records content characteristic information in the header data area, records content data to be recorded in a bad page existing in the content data area, in the reserved area, and a normal page of the content data area. Includes a recording step of recording the content data.

In a fourth method of the present invention for achieving the above object, in the content recording method, a bad state is generated by the central processing unit inspecting a memory card implemented by using a NAND flash memory device in which a bad bit has occurred. Identifying a bit; A division page unit processing step of processing, by the central processing unit, the bad bits in division page (sub page) units by using the identified position information on the bad bits; Setting, by the central processing unit, a header data area and a content data area in a normal page area in which a bad bit does not occur; And a recording step of the central processing unit to record the content characteristic information in the header data area, and to record the content data only in the normal split page without recording the content data in the bad split page existing in the content data area.

According to a fifth method of the present invention for achieving the above object, in the content recording method, a bad state is generated by the central processing unit inspecting a memory card implemented by using a NAND flash memory device in which bad bits have occurred. Identifying a bit; A division page unit processing step of processing, by the central processing unit, the bad bits in division page units by using the location information on the checked bad bits; Setting, by the central processing unit, a header data area, a content data area, and a reserved area in a normal divided page area in which a bad bit does not occur; And the central processing unit records the content characteristic information in the header data area, records the content data to be recorded in the bad split page existing in the content data area, in the reserved area, And a recording step of recording the content data on the normal divided page.

According to a sixth method of the present invention for achieving the above object, in the content recording method, a bad state is generated by the central processing unit inspecting a memory card implemented using a NAND flash memory device in which a bad bit has occurred. Identifying a bit; A bad area unit processing step of processing, by the central processing unit, a bad bit in a bad area unit by using the location information on the identified bad bit; Setting, by the central processing unit, a header data area and a content data area in a normal area where a bad bit does not occur; And a recording step of the central processing unit to record the content characteristic information and the address of the bad area in the header data area, and to record the content data only in the normal area without recording the content data in the bad area existing in the content data area. do.

According to a seventh method of the present invention for achieving the above object, in the content recording method, a bad state is generated by the central processing unit inspecting a memory card implemented using a NAND flash memory device in which bad bits have occurred. Identifying a bit; A bad area unit processing step of processing, by the central processing unit, a bad bit in a bad area unit by using the location information on the identified bad bit; Setting, by the central processing unit, a header data area and a content data area in a normal area where a bad bit does not occur; And the central processing unit records the content characteristic information and the address of the bad area in the header data area, and the content data to be recorded in the bad area without recording the content data in the bad area existing in the content data area. And recording corresponding to the corresponding address in the data area, and recording the content data in the normal area of the content data area.

Meanwhile, the present invention relates to a content recording device having a processor, wherein the processor inspects a memory card implemented using a NAND flash memory device in which bad bits have occurred, and a bad bit in which a defect has occurred. The ability to check; A function of processing the bad bits in units of blocks by using the location information on the checked bad bits; The processor setting a header data area and a content data area in a normal block area in which a bad bit has not occurred; And a program for causing the processor to record content characteristic information in the header data area, and to implement a function of recording content data only in a normal block without writing content data in a bad block existing in the content data area. Provide a readable recording medium.

In addition, the present invention, the content recording device having a processor, the processor checks the memory card implemented by using the NAND flash memory device, the bad bit occurred (bad bit) The ability to check; A function of processing the bad bits in page units by using the location information on the checked bad bits; A function of setting, by the processor, a header data area and a content data area in a normal page area in which a bad bit does not occur; And a program for causing the processor to record content characteristic information in the header data area, and to implement a function of recording content data only in a normal page without recording content data in a bad page existing in the content data area. It provides a recording medium that can be read by.

In addition, the present invention, the content recording device having a processor, the processor checks the memory card implemented by using the NAND flash memory device, the bad bit occurred (bad bit) The ability to check; A function of processing the bad bits in page units by using the location information on the checked bad bits; A function of setting, by the processor, a header data area, a content data area, and a reserved area in a normal page area in which a bad bit does not occur; And the processor records content characteristic information in the header data area, writes content data to be recorded in a bad page existing in the content data area, in the reserved area, and writes to a normal page of the content data area. A computer readable recording medium having recorded thereon a program for realizing a function of recording content data is provided.

In addition, the present invention, the content recording device having a processor, the processor checks the memory card implemented by using the NAND flash memory device, the bad bit occurred (bad bit) The ability to check; A function of processing, by the processor, the bad bits in division pages (subpages) based on the checked location information of the bad bits; A function of setting, by the processor, a header data area and a content data area in a normal page area in which bad bits are not generated; And a program for causing the processor to record content characteristic information in the header data area, and to implement a function of recording content data only in the normal divided page without recording the content data in the bad divided page existing in the content data area. Provide a computer readable recording medium.

In addition, the present invention, the content recording device having a processor, the processor checks the memory card implemented by using the NAND flash memory device, the bad bit occurred (bad bit) The ability to check; A function of processing, by the processor, bad bits in divided page units by using location information of the identified bad bits; A function of setting, by the processor, a header data area, a content data area, and a reserved area in a normal divided page area in which a bad bit does not occur; And the processor records the content characteristic information in the header data area, writes the content data to be recorded in the bad divided page existing in the content data area, in the reserved area, and normally divides the content data area. A computer readable recording medium having recorded thereon a program for realizing a function of recording content data on a page is provided.

In addition, the present invention, the content recording device having a processor, the processor checks the memory card implemented by using the NAND flash memory device, the bad bit occurred (bad bit) The ability to check; A function of processing, by the processor, a bad bit into a bad area unit by using the location information on the identified bad bit; A function of setting, by the processor, a header data area and a content data area in a normal area in which a bad bit does not occur; And the processor writes the content characteristic information and the address of the bad area in the header data area, and writes the content data only in the normal area without writing the content data in the bad area existing in the content data area. A computer readable recording medium having recorded a program is provided.

In addition, the present invention, the content recording device having a processor, the processor checks the memory card implemented by using the NAND flash memory device, the bad bit occurred (bad bit) The ability to check; A function of processing a bad bit in a bad area unit by the processor using the location information on the identified bad bit; A function of setting, by the processor, a header data area and a content data area in a normal area in which a bad bit does not occur; And the processor records the content characteristic information and the address of the bad area in the header data area, and the content data to be recorded in the bad area without recording the content data in the bad area existing in the content data area. A computer-readable recording medium having a program corresponding to an address in an area and having a program for realizing a function of recording content data in a normal area of the content data area is provided.

Here, since the read-only memory card must maintain the recorded contents even when the power is lost, the flash memory may be most commonly used among various memory methods (DRAM, Flash, SRAM, etc.). You may use any type of memory element which retains the recorded contents even if it disappears. Hereinafter, a description will be given of a flash memory in which a bad bit, which is a bad phenomenon, is described, for example. However, 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 intended use is to be read-only (ie, read-only which prohibits writing and erasing) as in the present invention, a minimum of 14 pins for NAND flash memory without using a separate flash card controller (I / 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. Prohibit writing and erasing. 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) A simple form that reads the contents of a read-only memory card and decodes it in a decoder to play the contents. The big difference is that they don't have storage flash memory. 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) and video are not used. When recording content such as a memory card to read-only data and using it for read-only playback, even if there is more than one bit present, all 128K byte blocks (for small block type, 64K byte is one block) are used. Unlike the current method of using the flash memory, the present invention uses a memory card for read-only, so that only the bad area where the bad bit has occurred cannot be used, and all remaining normal areas in the block can be used and discarded. Bad flash memory can be used to provide a read-only memory card at a lower cost. There.

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. In order to prevent the user from randomly deleting the contents (contents) of the memory card or writing new contents (contents) on the memory card, the present invention provides a terminal for prohibiting write / erase (delete) of the memory in the flash memory. Input / output (I / O) and control to read the data (content) in memory by inhibiting write and erase functions by internally pulling down the WP (Write Protect) signal terminal. A read-only memory card is implemented in a form similar to a credit card by connecting signal terminals to external contact terminals. 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 to flash memory at the time, the contents can be recorded after finishing the printing of the final stage of the read-only memory card so that 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, the flash memory process is 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. By the way, most of the flash memory in which the bad bit which is a bad phenomenon generate | occur | produces is discarded now. 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 contents such as audio or video are recorded on a memory card and reproduced for read-only use as in the present invention, even if there is more than one bit present, a 128K byte block (for a small block type, a small block type is 64K bytes). Is a block), the present invention uses a memory card for read-only, so that only the bad area in which a bad bit is generated cannot be used, and the remaining normal area in the block is not used. All are made available so that the bad flash memory can be used.

Alternatively, the present invention provides address information for each list, applied encryption technique information, baud rate, caption data, date, and the like 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 along with content characteristic information such as unique serial number for online registration, etc., and the following content data information is read in the playback apparatus except the bad bit part. By implementing in a manner that automatically converts the content data into a reproduced content signal, it is possible to fundamentally avoid using a bad bit area. 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.

1 is a view for explaining a read-only memory card used in the present invention.

As shown in Fig. 1, the read-only memory card 1 used in the present invention has an input / output contact terminal 2 which connects eight bits to be in contact with a connector of a recording device or a reproducing device to input and output data and address data. ), 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 a bad bit In order to protect the contents recorded in the flash memory (5 in FIG. 2) and the memory device (flash memory) where the memory device is generated, the writing and erasure of the hardware is prohibited so that the content cannot be deleted or new content can be written from the outside. A WP terminal pad 25 is provided to provide a function.

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.

Meanwhile, NAND flash memory, which is widely used today, has a structure capable of inexpensive design and production due to various capacities and principles. The structure of flash memory is a cell of bits and these bits gather to form a page, and the pages gather to form a block. In the case of a large block type flash memory, a page is composed of a total of (2048 + 64) bytes of 2048 bytes of main area and 64 bytes of free area (used as a code area for recovering data state and error correction of the main area). Since a block consists of 64 such pages, the capacity of one block is (2048 + 64) x64 = (128K + 4K) bytes. In the case of small block flash memory, a page is composed of a total of (512 + 16) bytes of 512 bytes of main area and 16 bytes of free area, and a block is composed of 32 such pages so that the capacity of one block is (512+ 16) x32 = (16K + 512) bytes. If the word is composed of 16-bit words instead of 8-bit units, it is composed of half of the above capacity.

In the case of NAND flash memory, the read / write mode is possible only in units of pages, and the erase function that needs to be performed before writing is only possible in units of blocks. Therefore, when a bit is bad, the entire block ( For large blocks, <128K + 4K> bytes) can be lost. Due to this characteristic, a total of 1024 blocks can be used for the 1G bit large block at the time of initial product shipment, but in the case of "Samsung Electronics" and "Hynix", the normal blocks are classified as good products at least 1004 blocks. Is determined to be defective or out of order. In the flash memory, a spare area composed of a main area in page units includes bad block information, a logical sector number, a power failure status flag generated during writing, an error correction code value of the main area, and a logical sector number. Etc. are stored to ensure a certain degree of reliability and to recover from bit breaks occurring during use. That is, the NAND flash memory may contain invalid blocks, but no information should be stored in the invalid blocks, and the initial invalid blocks mean the original bad blocks tested before shipment, and the invalid blocks The display writes 00H in each free area of the first page of the block, and additional bad blocks may occur during writing and erasing within the service life (at least 10 years), thus preventing data loss. Set 10% as the reserved area. If bad blocks occur during writing and erasing (very unlikely during reading), the original data is transferred to this storage area, and if the bad blocks do not occur during use, the storage area is not used. It is believed that current devices that use flash memory to respond to user claims caused by data loss are mandatory storage areas. In other words, if an error occurs during writing or erasing, the block is marked as a bad block and replaced with a block in the storage area. However, when an error occurs during reading, the error correction code is reconfirmed and corrected.

On the other hand, compared to the existing devices that use both read / write / erase functions as described above, in the present invention, once the content data is written to the flash memory, it is used as read only, and the block unit mode such as the erase function is not used. Because it is used only in page unit mode and so on, even if a bad bit occurs, the memory space can be operated in a bad page unit, not a bad block.In the case of a large block, if a bad bit occurs, the present time is (128K + 4K) bytes. In the read-only mode for the purpose of the present invention, there is a big advantage (validating 98.5%) that only discards (2K + 64) bytes.

In addition, existing devices that use both read / write / erase functions should allocate about 10% of the total capacity to a reserved area in order to cope with bad bits that may occur during use. Because it is used only in mode, there is an extremely low probability of bad bits. Therefore, there is no need to allocate a separate storage area, which provides the advantage of using all of a given memory capacity.

In addition, in the present invention, since only the read-only mode is used, a separate flash memory file management program (FAT) is not required in the device (device) stage, so that only the bad area where the bad bit is generated can be used, and another normal area (2K byte page area) If one bad bit occurs, only one byte is valid and the 1999 byte is validated).

In the first method for this, in the case of devices using flash memory, if a bad bit occurs during initialization, all blocks to which the bad bit belongs are bad-blocked, and if the bad block is deleted in the process of erasing and writing, the set is reserved. The method of writing to the block area is currently applied as described above, but since the flash memory and the memory card used for content recording only record the header data and the content data once at the time of manufacture, they are subsequently used as read-only. Using bad bit information found during initialization (formatting), the block in which the bad bit is generated is marked as a bad block, and after that, data is sequentially written only to the normal block, and when the bad block comes out, the corresponding bad block is skipped. And record data following the next normal block. As, by implementing so that the storage area the block is bad block is not required does not occur during use, and to take advantage of all of the given memory space.

In the second method, in a device using a flash memory, a flash memory and a memory card used for content recording only record header data and content data once in manufacturing and erase by block of the flash memory. Since it is used as read only to disable the basic function, the page where bad bit is generated is marked as bad page by using bad bit information found during initialization (formatting) or the bad page address is written in the header data area. Afterwards, the data is recorded sequentially only on the normal page, but the bad page is skipped, and the bad page is skipped and the data is recorded on the next normal page, thereby utilizing all of the given memory space except the bad page. To help.

At this time, in the second method, instead of recording data to be recorded on the bad page after the next normal page, a separate reserved area for recording the data of the bad page is set, and the storage area It can also be implemented to record the data that should be recorded on the bad page. That is, the data to be recorded in the bad page may be implemented in the storage area in units of pages.

In the third method, at present, the pages of the flash memory are divided into 1 or 2 to 4 (large block flash memory is divided into 4 divided pages (subpages) when the page size is 2K bytes. If the large block size is increased to 4K, it is divided into eight divided pages) and implemented in correspondence with a spare space for recording the state of the divided pages, and the flash memory and the memory card used for content recording are Since only one write is made during manufacturing and read-only, so that the basic function of erasing by block of flash memory is not used, the divided page where bad bits are generated by using bad bit information found during initialization (formatting) In the status recording area in the free space as a bad split page or a bad split page address in the header data. Data in the data area, and afterwards, data is recorded sequentially only on the normal partition page, and when the bad partition page comes out, the bad partition page is skipped and the data is subsequently recorded on the next normal partition page. To use all but the bad split page.

At this time, in the third method, instead of recording the data to be recorded on the bad split page next to the next normal split page, it is set in a separate reserved area for recording the data of the bad split page, The storage area may be configured to record data to be recorded on the bad partition page. That is, the data to be recorded on the bad divided page may be recorded in the storage area on a divided page basis.

In a fourth method, in devices using flash memory, a bad area in which a bad bit is found at an initial inspection in a header data area that records characteristics of the flash memory (for example, 1 bit, 4 bit, 8 bit, and 16 bits). Bits, etc.), and when data is recorded in the content data area of the flash memory and reaches the position where the bad area is found based on the header data, the bad area is skipped and the bad area is recorded at the next location. In order to read the flash memory in the playback device, the data to be read is sequentially read. The header data area is read. When the address of the bad area is reached according to the bad area information, the bad area is skipped and the next area data is read continuously. In this case, all remaining normal areas except the bad area can be used even in the bad block.

Fifth, in devices using flash memory, bad areas where bad bits are found in the header data area that records the characteristics of the flash memory during initial inspection (for example, 1 bit, 4 bits, 8 bits, and 16 bits). Bits, etc.), and sequentially writes data to the content data area of the flash memory, ignoring the bad area, and at the location where the bad area is found, corresponding to the corresponding address in the header data area (the corresponding bad data). Data to be recorded in the area), and conversely, when the flash memory is read by the playback apparatus, the header data area is read and when the address of the bad area is reached according to the bad area information, the corresponding bad area is skipped and the header data area is read. In the bad block by implementing the replacement by reading the true data value corresponding to that address in the Except for the bad areas and to be able to use all of the remaining top area.

Figure 2 is a detailed block diagram of one embodiment of a read-only memory card used in 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 read 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 to 7.

3 is a flowchart of a first embodiment of a content recording method according to the present invention.

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 a bad bit is generated using the location information on the checked bad bit. Mark the block as a bad block (32).

The central processing unit sets a header data area in a normal block area in which bad bits are not generated, and sets a content data area for storing content data (33).

The central processing unit records the content characteristic information in the header data area, and since there is a bad block in the content data area, skips the bad block without writing content data in the bad block and next normal block. Next, the content data is recorded (34).

4 is a flowchart of a second embodiment of a content recording method according to the present invention.

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 a bad bit is generated using the location information on the checked bad bit. Mark the page as a bad page (42).

The central processing unit sets a header data area in a normal page area where a bad bit has not occurred, and sets a content data area for storing content data (43).

The central processing unit writes the content characteristic information in the header data area, and if there is a bad page in the content data area, the bad page skips the bad page without writing content data in the corresponding bad page. Content data is recorded next from the page (44).

In this case, the modified example of the second embodiment is as follows.

First, the central processing unit of the content recording apparatus according to the present invention examines a memory card to identify bad bits in which a defect has occurred, and uses the location information on the checked bad bits to determine a page in which bad bits are generated. Mark as bad page.

The central processing unit sets a header data area in a normal page area where a bad bit does not occur, sets a content data area for storing content data, and stores the data to be recorded in the bad page. reserved) set the area.

The central processing unit records the content characteristic information in the header data area, and as the bad page exists in the content data area, the content data to be recorded in the bad page is not stored in the bad page. reserved) area and the next content data is recorded from the next normal page.

Here, another modified example of the second embodiment is as follows.

First, the central processing unit of the content recording apparatus according to the present invention examines a memory card to identify bad bits in which a defect has occurred, and uses the location information on the checked bad bits to determine a page in which bad bits are generated. Set as bad page.

The central processing unit sets a header data area in a normal page area in which no bad bit occurs and sets a content data area for storing content data.

The central processing unit records the content characteristic information and the bad page information (address) in the header data area, and as the bad page exists in the content data area, the corresponding bad page is skipped without recording the content data in the corresponding bad page ( skip) and then the content data is recorded from the next normal page.

Here, another modified example of the second embodiment is as follows.

First, the central processing unit of the content recording apparatus according to the present invention examines a memory card to identify bad bits in which a defect has occurred, and uses the location information on the checked bad bits to determine a page in which bad bits are generated. Set as bad page.

The central processing unit sets a header data area in a normal page area where a bad bit does not occur, sets a content data area for storing content data, and stores the data to be recorded in the bad page. reserved) set the area.

The central processing unit records the content characteristic information and the bad page information (address) in the header data area, and as the bad page exists in the content data area, the bad page should be recorded in the corresponding bad page without recording the content data. Record the content data in the reserved area and record the next content data from the next normal page.

5 is a flowchart of a third embodiment of a content recording method according to the present invention.

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 (51), and a bad bit is generated using location information on the checked bad bit. The divided pages (subpages) are marked as bad divided pages in the state recording area in the spare space (52).

The central processing unit sets a header data area in a normal divided page area in which bad bits are not generated, and sets a content data area for storing content data (53).

The central processing unit records the content characteristic information in the header data area, and as the bad split page exists in the content data area, skips the bad split page without writing content data in the bad split page. The content data is recorded subsequently from the normal division page of (54).

In this case, the modified example of the third embodiment is 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 a split page in which a bad bit is generated using location information on the checked bad bit. Mark as a bad split page in the status recording area in the spare space.

The central processing unit sets a header data area in a normal divided page area in which a bad bit does not occur, sets a content data area for storing content data, and records data to be recorded in a bad divided page. Set up a reserved area.

The central processing unit records the content characteristic information in the header data area, and as the bad split page exists in the content data area, the content data to be recorded on the bad split page is recorded without writing the content data on the bad split page. The data is recorded in the reserved area and the next content data is recorded from the next normal division page.

Here, another modified example of the third embodiment is 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 a split page in which a bad bit is generated using location information on the checked bad bit. Set to the bad split page.

The central processing unit sets a header data area in a normal divided page area in which a bad bit does not occur, and sets a content data area for storing content data.

The central processing unit records the content characteristic information and the bad split page information (address) in the header data area, and as the bad split page exists in the content data area, the bad split page does not record the content data. The page is skipped and the content data is recorded starting from the next normal division page.

Here, another modified example of the third embodiment is 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 a split page in which a bad bit is generated using location information on the checked bad bit. Set to the bad split page.

The central processing unit sets a header data area in a normal divided page area in which a bad bit does not occur, sets a content data area for storing content data, and records data to be recorded in a bad divided page. Set up a reserved area.

The central processing unit records the content characteristic information and the distributed hard page information (address) in the header data area, and since there is a bad partition page in the content data area, the bad partition page does not record the content data. The content data to be recorded on the page is recorded in the reserved area and the next content data is recorded from the next normal division page.

6 is a flowchart of a fourth embodiment of a content recording method according to the present invention.

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 (61), and a bad bit is generated using the location information on the checked bad bit. The existing bits are set to the bad area (62).

The central processing unit sets a header data area in a normal area where no bad bit occurs and sets a content data area for storing content data (63).

The central processing unit records content characteristic information and an address of a bad area in the header data area, and a bad area exists in the content data area, and thus skips the bad area without writing content data in the bad area. The content data is then recorded from the next normal area (64).

7 is a flowchart of a fifth embodiment of a content recording method according to the present invention.

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 (71), and a bad bit is generated using the location information on the checked bad bit. The bits are set to the bad area (72).

The central processing unit sets a header data area in a normal area where no bad bit occurs and sets a content data area for storing content data (73).

The central processing unit records content characteristic information and an address of a bad area in the header data area, and a bad area exists in the content data area, and thus skips the bad area without writing content data in the bad area. The contents data to be recorded in the corresponding bad area is recorded corresponding to the corresponding address in the header data area, and the next content data is recorded from the next normal area (74).

Meanwhile, 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 ( After the write prohibition is released by inputting a high signal in the case of the active low, the content data is written to the memory device through the input / output contact terminal 2 and the control signal contact terminal 3 (in any of the various ways described above). And optionally seal the pad 25 of the WP terminal 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 Implement to include the information on the bad bit with the content characteristic information such as, or to separately mark the information on the bad bit, the playback device except the bad bit portion in the playback device Content data that reads data information or is recorded in another area (eg storage area) The reading can be fundamentally avoided that by then implemented in such a way as to automatically switch to playback content signals to the preceding content data, using a bit bad (bad bit) region. 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 and avoided from the bad bit. The bad bit information is recorded in the header data area or separately marked.

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 order to protect the external contact terminals of the read-only memory card from static electricity or the like, it is designed by installing a barista or the like to reinforce 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.

8 is a view for explaining a content reproducing apparatus corresponding to the present invention.

As shown in FIG. 8, 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 13 Read the data (contents) and decode it in a decoder, and include a simple switch input unit 26, a display unit 16 such as a liquid crystal or LED lamp, an earphone connector 24, and a battery manager 23. do. 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.

9 is a configuration diagram of an embodiment of a content reproducing apparatus corresponding to the present invention.

As shown in FIG. 9, the MP3 or a separate compression type reproducing apparatus 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 FIGS. 10 to 14.

10 is a flowchart of a first embodiment of a content reproduction method corresponding to the present invention.

First, the central processor of the content reproducing apparatus recognizes that a read-only memory card is connected to a read-only memory card connector (101).

The central processing unit reads the header data of the read-only memory card connected through the read-only memory card connector (102).

The central processing unit reads the content data area, skips the bad block as a block marked as a bad block due to bad bits, and then reads the content data from the normal block next to the bad block. It reproduces (103) and outputs the reproduced content data via an output unit (104).

11 is a flowchart of a second embodiment of a content reproduction method corresponding to the present invention.

First, the central processing unit 111 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 (112).

The central processing unit reads the content data area and skips the bad page as a page marked as a bad page due to the bad bit, and then reads the content data from the normal page next to the bad page. The playback unit 113 outputs the reproduced content data through an output unit (114).

Here, a modification of the second embodiment of FIG. 11 will be described.

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.

When the central processing unit reads out the content data area and there is a page marked as a bad page due to the bad bit, the central processing unit reads data to be read from the bad page in the reserved area and then normal page next to the bad page. Subsequently, content data is read and played back, and the reproduced content data is output through the output unit.

Here, another modified example of the second embodiment of FIG. 11 will be described.

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 skips the corresponding bad page according to the bad page information among the read header data while reading out the content data area, and then reads and reproduces the content data from the normal page next to the bad page. The reproduced content data is output through the output unit.

Here, another modified example of the second embodiment of FIG. 11 will be described.

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 out the content data area, reads data to be read from the bad page according to the bad page information among the read header data in the reserved area, and then continues from the normal page next to the bad page. Read and play, and output the reproduced content data through an output unit.

12 is a flowchart of a third embodiment of a content reproduction method corresponding to the present invention.

First, the central processing unit recognizes that a read-only memory card is connected to a read-only memory card connector (121).

The central processing unit reads the header data of the read-only memory card connected through the read-only memory card connector and the state recording data (bad split page information) in a spare space (122).

The central processing unit reads the content data area, skips the corresponding bad split page according to the bad split page information among the read state recording data, and then sequentially divides the content data from the normal split page next to the bad split page. Read and play (123), and output the reproduced content data through the output unit (124).

At this time, a modified example of the third embodiment of FIG. 12 will be described.

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 and the status recording data (bad split page information) in a spare space.

The central processing unit reads out the content data area, reads data to be read from the bad partition page according to the bad partition page information among the read state record data, and then reads the data in the reserved area, and then divides the normal data next to the bad partition page. The content data is read and reproduced subsequently from the page, and the reproduced content data is output through the output unit.

Here, another modified example of the third embodiment of FIG. 12 will be described.

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 the content data area, skips the bad partition page according to the bad partition page information among the read header data, and then reads the content data from the normal partition page next to the bad partition page. And reproduces the reproduced content data through an output unit.

Here, another modified example of the third embodiment of FIG. 12 will be described.

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 the content data area, reads data to be read from the corresponding bad partition page according to the bad partition page information among the read header data in the reserved area, and then normal partition page next to the bad partition page. Subsequently, content data is read and played back, and the reproduced content data is output through the output unit.

13 is a flowchart of a fourth embodiment of a content reproduction method corresponding to the present invention.

First, the central processing unit recognizes that a read-only memory card is connected to a read-only memory card connector (131).

The central processing unit reads header data of the read-only memory card connected through the read-only memory card connector (132).

The central processing unit reads the content data area, skips the corresponding bad area according to the address of the bad area among the read header data, and then reads and reproduces the content data starting from the normal area next to the bad area ( 133) The reproduced content data is output through the output unit (134).

14 is a flowchart of a fifth embodiment of a content reproduction method corresponding to the present invention.

First, the central processing unit recognizes that a read-only memory card is connected to a read-only memory card connector (141).

The central processing unit reads the header data of the read-only memory card connected through the read-only memory card connector (142).

The central processing unit reads the content data area, and according to the address of the bad area of the read header data, the data to be read from the bad area from the data recorded corresponding to the bad area address of the header data area. After reading, the content data is read and reproduced from the normal region next to the bad area (143), and the reproduced content data is output through the output unit (144).

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. The player software can select and listen to the contents purchased by the player, and if the user registers another playback device that supports the service, the data can be converted and downloaded so that the user can listen 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. Group header data of the read-only memory card (recording content information, authentication information, and the bad-bit information found during the production) encounters a bad bit (bad bit) is implemented to reproduced avoiding the 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, by installing a separate storage memory in the playback-only device, inserting a read-only memory card and simply manipulating (or automatically) copies the contents of the memory card into the storage memory, and records the memory cards on which other contents are recorded. When inserted, the same process is repeated, so that the user does not download the desired content to the computer and does not download it one by one, or does not change the memory card each time he / she listens to it. You can easily build your own content storage just by inserting. 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 playback program's operating program limits the number of listening after installation (copying) to 2 to 10 times (after 10 times, inserts a read-only memory card and reinstalls it), or is stored. The data file itself 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., authorizing a list of content purchased by the computer to the playback device). If you download from the website <your list management function when you log in, you can install only what you have purchased on your playback device). We must prevent illegal copying 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.

Here, a more specific example of the copyright protection method is as follows.

The first method sets a unique number recording area for recording a unique number, such as a serial number of a playback device, in a header data area, which is an area for recording characteristics of a memory card, not a data storage space, so that the memory card is inserted into the playback device. When the playback device reads the information of the unique number recording area, the playback device records the unique number of the corresponding playback device if the corresponding area is empty, and records the unique number of the corresponding playback device in the next area if another unique number is recorded. If all the unique numbers for the specified number are recorded, it is played on the other playback device by the corresponding number. Therefore, it is classified as the "copyright limit exceeded" and it cannot be played on the playback device exceeding the predetermined number. Inform. That is, in the first method, copyright is protected by restricting the number of available playback devices for each memory card.

The second method sets a number management area for managing the number of times the memory card is read by the playback device, such as a header data area, which is an area for recording the characteristics of the memory card, not a data storage space, and inserts the memory card into the playback device for playback. In this case, the reproducing apparatus reads the information in the number management area and records the number of reproductions (for example, recording the maximum allowable value and counting down or counting up from zero or marking a specific area with a predetermined number). When the number of playbacks reaches a predetermined number of times, the playback apparatus is played back as many times as the number of times the copyright is exceeded. Thus, the user is notified that the user cannot play more than the predetermined number of times. In other words, the second method protects copyrights by limiting the number of times of playback that can be used for each memory card.

In the third method, a unique number recording area for recording a unique number, such as a serial number of a playback device, in a header data area, which is an area for recording characteristics of a memory card, not a data storage space, can be used. Record the unique numbers of the existing playback devices (recording the unique numbers of the playback devices allowing use of the memory card in the case of expensive contents such as Bible reading content), and recording devices to the memory card when the memory card is first inserted. After reading the unique numbers, it compares them with their own numbers and plays them. If they do not match, they are classified as "copyright infringement cases". If the unique numbers are not recorded on the memory card, the memory card can be used. Inform the user that it cannot. That is, in the third method, like the first method, copyright is protected by restricting the number of available playback devices for each 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

The method of the present invention as described above may be implemented in 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 more detail.

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).

Accordingly, the present invention enables to record desired content (eg, sound source, video, etc.) on a memory card using a NAND flash memory device in which bad bits, which are bad phenomena, are generated. There is an effect that it is possible to use a NAND flash memory device that has a bad bit).

In this case, the read-only memory card may be made of a recording medium having a size and thickness similar to that of a credit card, and may maximize the value of possession, satisfaction of ownership, portability, and economy by printing various card designs according to contents. have.

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 (51)

In the content recording device, The central processing unit checks a bad bit in which a defect occurs by inspecting a memory card implemented using a NAND flash memory device in which a bad bit has occurred, The central processing unit processes bad bits in units of blocks by using the location information on the checked bad bits, The central processing unit sets a header data area and a content data area in a normal block area in which a bad bit has not occurred; And the central processing unit records the content characteristic information in the header data area, and records the content data only in the normal block without recording the content data in the bad block existing in the content data area. The method of claim 1, The central processing unit marks the block in which the bad bit is generated as a bad block by using the location information on the checked bad bit, The central processing unit records content characteristic information in the header data area, and as a bad block exists in the content data area, skips the bad block without writing content data in the bad block, and the content data. And the content data is recorded only in the normal block of the area. In the content recording device, The central processing unit checks a bad bit in which a defect occurs by inspecting a memory card implemented using a NAND flash memory device in which a bad bit has occurred, The central processing unit processes the bad bits in units of pages by using the location information on the checked bad bits, The central processing unit sets a header data area and a content data area in a normal page area where a bad bit does not occur; And the central processing unit records the content characteristic information in the header data area, and records the content data only in the normal page without recording the content data in the bad page existing in the content data area. The method of claim 3, wherein The central processing unit marks the page where the bad bit is generated as a bad page by using the location information on the checked bad bit, The central processing unit records the content characteristic information in the header data area, and as the bad page exists in the content data area, skips the bad page without writing the content data in the bad page, and the content data. And the content data is recorded only on the normal page of the area. The method of claim 3, wherein The central processing unit sets the page on which the bad bit is generated as a bad page using the location information on the checked bad bit, The central processing unit records content characteristic information and bad page information (address) in the header data area, and since a bad page exists in the content data area, the corresponding bad page is skipped without writing content data in the corresponding bad page ( and record the content data only in the normal page of the content data area. In the content recording device, The central processing unit checks a bad bit in which a defect occurs by inspecting a memory card implemented using a NAND flash memory device in which a bad bit has occurred, The central processing unit processes the bad bits in units of pages by using the location information on the checked bad bits, The central processing unit sets a header data area, a content data area, and a reserved area in a normal page area in which a bad bit does not occur; The central processing unit records the content characteristic information in the header data area, records the content data to be recorded in the bad page existing in the content data area, in the reserved area, and in the normal page of the content data area. A content recording apparatus, characterized by recording content data. The method of claim 6, The central processing unit marks the page where the bad bit is generated as a bad page by using the location information on the checked bad bit, The central processing unit records the content characteristic information in the header data area, and as the bad page exists in the content data area, the content data to be recorded in the bad page is not stored in the bad page. and a content recording device in the normal page of the content data area. The method of claim 6, The central processing unit sets the page on which the bad bit is generated as a bad page using the location information on the checked bad bit, The central processing unit records the content characteristic information and the bad page information (address) in the header data area, and as the bad page exists in the content data area, the bad page should be recorded in the corresponding bad page without recording the content data. And record the content data in the reserved area, and record the content data in the normal page of the content data area. In the content recording device, The central processing unit checks a bad bit in which a defect occurs by inspecting a memory card implemented using a NAND flash memory device in which a bad bit has occurred, The central processing unit processes the bad bits in division pages (subpages) by using the identified position information on the bad bits, The central processing unit sets a header data area and a content data area in a normal page area where a bad bit does not occur; And the central processing unit records the content characteristic information in the header data area, and records the content data only in the normal divided page without recording the content data in the bad divided page existing in the content data area. The method of claim 9, The central processing unit marks the divided page on which the bad bit is generated as a bad divided page (bad sub page) in a state recording area in a spare space by using the position information on the checked bad bit. The central processing unit records content characteristic information in the header data area, and if a bad split page exists in the content data area, the bad split page skips the bad split page without writing content data in the bad split page; And the content data is recorded only on a normal divided page of the content data area. The method of claim 9, The central processing unit sets the divided page on which the bad bit is generated as a bad divided page using the location information on the checked bad bit, The central processing unit records the content characteristic information and the bad split page information (address) in the header data area, and as the bad split page exists in the content data area, the bad split page does not record the content data. And a page is skipped, and the content data is recorded only on a normal divided page of the content data area. In the content recording device, The central processing unit checks a bad bit in which a defect occurs by inspecting a memory card implemented using a NAND flash memory device in which a bad bit has occurred, The central processing unit processes the bad bits in divided page units by using the location information on the checked bad bits, The central processing unit sets a header data area, a content data area, and a reserved area in a normal divided page area in which a bad bit does not occur; The central processing unit records the content characteristic information in the header data area, records the content data to be recorded in the bad divided page existing in the content data area, in the reserved area, and normal division of the content data area. A content recording apparatus, characterized by recording content data on one page. The method of claim 12, The central processing unit marks the divided page on which the bad bit is generated as a bad divided page in a state recording area in a spare space by using the location information on the checked bad bit, The central processing unit records the content characteristic information in the header data area, and as the bad split page exists in the content data area, the content data to be recorded in the bad split page is not written in the bad split page. And recording the content data in the reserved area and recording the content data on the normal divided page of the content data area. The method of claim 12, The central processing unit sets the divided page on which the bad bit is generated as a bad divided page using the location information on the checked bad bit, The central processing unit records the content characteristic information and the distributed hard page information (address) in the header data area, and as the bad partition page exists in the content data area, the bad partition page does not record content data. And recording the content data to be recorded on the one page in the reserved area, and recording the content data on the normal divided page of the content data area. In the content recording device, The central processing unit checks a bad bit in which a defect occurs by inspecting a memory card implemented using a NAND flash memory device in which a bad bit has occurred, The central processing unit processes the bad bit in a bad area unit by using the location information on the checked bad bit, The central processing unit sets a header data area and a content data area in a normal area where a bad bit has not occurred; The central processing unit writes the content characteristic information and the address of the bad area in the header data area, and writes the content data only in the normal area without recording the content data in the bad area existing in the content data area. Recording device. The method of claim 15, The central processing unit sets the bits in which the bad bits are generated to the bad area by using the position information on the checked bad bits. The central processing unit records the content characteristic information and the address of the bad area in the header data area, and since the bad area exists in the content data area, the bad area is skipped without recording the content data in the bad area. And record the content data only in the normal area of the content data area. In the content recording device, The central processing unit checks a bad bit in which a defect occurs by inspecting a memory card implemented using a NAND flash memory device in which a bad bit has occurred, The central processing unit processes bad bits in bad area units by using the location information on the checked bad bits, The central processing unit sets a header data area and a content data area in a normal area where a bad bit does not occur; The central processing unit records the content characteristic information and the address of the bad area in the header data area, and the content data to be recorded in the bad area without recording the content data in the bad area existing in the content data area. And recording the content data corresponding to the corresponding address in the area, and recording the content data in the normal area of the content data area. The method of claim 17, The central processing unit sets the bits in which the bad bits are generated to the bad area by using the position information on the checked bad bits. The central processing unit records the content characteristic information and the address of the bad area in the header data area, and since the bad area exists in the content data area, the bad area is skipped without recording the content data in the bad area. And record the content data to be recorded in the bad area corresponding to the address in the header data area, and record the content data in the normal area of the content data area. The method according to any one of claims 1 to 18, The content data recording process, After writing content data to the memory card for the first time, a signal for canceling the write prohibition of the write / delete prohibition terminal is input to cancel the write prohibition and write the content data, and then the write / delete prohibit function of the write / delete prohibit terminal Setting the user so that the user cannot change it arbitrarily. The method of claim 19, The header data area setting process may include: And retrieving a header data area free of bad bits from among a plurality of header data areas to record the header data. The method of claim 20, The central processing unit, And recording authentication information for copyright protection in the header data area. The method of claim 19, The central processing unit, And further recording the advertisement content data so as to be automatically reproduced before the content data recorded in the content data area. In the content recording method, Checking, by the central processing unit, a bad bit in which a failure occurs by inspecting a memory card implemented using a NAND flash memory device in which bad bits have occurred; A block unit processing step of processing, by the central processing unit, the bad bits in block units by using the location information on the checked bad bits; Setting, by the central processing unit, a header data area and a content data area in a normal block area in which a bad bit does not occur; And A recording step in which the central processing unit records the content characteristic information in the header data area, and records the content data only in the normal block without recording the content data in the bad block existing in the content data area; Content recording method comprising a. The method of claim 23, In the block unit processing step, the central processing unit marks a block in which a bad bit is generated using a location information on the checked bad bit as a bad block, In the recording step, the central processing unit records the content characteristic information in the header data area, and since the bad block exists in the content data area, the bad block is skipped without recording the content data in the bad block. And record the content data only in the normal block of the content data area. In the content recording method, Checking, by the central processing unit, a bad bit in which a failure occurs by inspecting a memory card implemented using a NAND flash memory device in which bad bits have occurred; A page unit processing step of processing, by the central processing unit, the bad bits in units of pages using the location information on the checked bad bits; Setting, by the central processing unit, a header data area and a content data area in a normal page area in which a bad bit does not occur; And A recording step in which the central processing unit records the content characteristic information in the header data area, and records the content data only in the normal page without recording the content data in the bad page existing in the content data area; Content recording method comprising a. The method of claim 25, In the page unit processing step, the central processing unit marks the page on which the bad bit is generated using the location information on the checked bad bit as a bad page, In the recording step, the central processing unit records the content characteristic information in the header data area, and as the bad page exists in the content data area, the bad page is skipped without recording the content data in the bad page. And record the content data only on the normal page of the content data area. The method of claim 25, In the page unit processing step, the central processing unit sets the page on which the bad bit is generated using the location information on the checked bad bit as a bad page, In the recording step, the central processing unit records the content characteristic information and the bad page information (address) in the header data area, and as the bad page exists in the content data area, the corresponding data is not recorded in the corresponding bad page. Skipping a bad page, and recording the content data only on the normal page of the content data area. In the content recording method, Checking, by the central processing unit, a bad bit in which a failure occurs by inspecting a memory card implemented using a NAND flash memory device in which bad bits have occurred; A page unit processing step of processing, by the central processing unit, the bad bits in units of pages using the location information on the checked bad bits; Setting, by the central processing unit, a header data area, a content data area, and a reserved area in a normal page area in which a bad bit does not occur; And The central processing unit records the content characteristic information in the header data area, records the content data to be recorded in the bad page existing in the content data area, in the reserved area, and in the normal page of the content data area. Recording step to record content data Content recording method comprising a. The method of claim 28, In the page unit processing step, the central processing unit marks the page on which the bad bit is generated using the location information on the checked bad bit as a bad page, In the recording step, the central processing unit records the content characteristic information in the header data area, and as a bad page exists in the content data area, content to be recorded in the bad page without recording content data in the bad page. Recording data in the reserved area, and recording the content data on the normal page of the content data area. The method of claim 28, In the page unit processing step, the central processing unit sets the page on which the bad bit is generated using the location information on the checked bad bit as a bad page, In the recording step, the central processing unit records the content characteristic information and the bad page information (address) in the header data area, and as the bad page exists in the content data area, the corresponding data is not recorded in the corresponding bad page. And recording the content data to be recorded in the bad page in the reserved area, and recording the content data in the normal page of the content data area. In the content recording method, Checking, by the central processing unit, a bad bit in which a failure occurs by inspecting a memory card implemented using a NAND flash memory device in which bad bits have occurred; A division page unit processing step of processing, by the central processing unit, the bad bits in division page (sub page) units by using the identified position information on the bad bits; Setting, by the central processing unit, a header data area and a content data area in a normal page area in which a bad bit does not occur; And A recording step in which the central processing unit records the content characteristic information in the header data area, and records the content data only in the normal split page without recording the content data in the bad split page existing in the content data area; Content recording method comprising a. The method of claim 31, wherein In the divided page unit processing step, the divided page in which a bad bit is generated is divided into a bad divided page (bad sub page) in a state recording area in a spare space by using the position information of the bad bit checked by the central processing unit. ), And In the recording step, the central processing unit records the content characteristic information in the header data area, and since the bad split page exists in the content data area, the bad split page is skipped without recording the content data in the bad split page. and records content data only on a normal divided page of the content data area. The method of claim 31, wherein In the divided page unit processing step, the central processing unit sets the divided page on which the bad bit is generated using the location information on the checked bad bit as a bad divided page, In the recording step, the central processing unit records the content characteristic information and the bad divided page information (address) in the header data area, and as the bad divided page exists in the content data area, the content data is recorded in the corresponding bad divided page. And skips the bad divided page without recording the content data only in the normal divided page of the content data area. In the content recording method, Checking, by the central processing unit, a bad bit in which a failure occurs by inspecting a memory card implemented using a NAND flash memory device in which bad bits have occurred; A division page unit processing step of processing, by the central processing unit, the bad bits in division page units by using the location information on the checked bad bits; Setting, by the central processing unit, a header data area, a content data area, and a reserved area in a normal divided page area in which a bad bit does not occur; And The central processing unit records the content characteristic information in the header data area, records the content data to be recorded in the bad divided page existing in the content data area, in the reserved area, and normal division of the content data area. Recording step to write content data to page Content recording method comprising a. The method of claim 34, wherein In the divided page unit processing step, the central processor marks the divided page on which the bad bit is generated as a bad divided page in a state recording area in a spare space by using the position information on the checked bad bit. In the recording step, the central processing unit records the content characteristic information in the header data area, and as the bad split page exists in the content data area, the content is not recorded on the bad divided page but recorded in the corresponding bad split page. And recording the content data to be stored in the reserved area, and recording the content data on a normal divided page of the content data area. The method of claim 34, wherein In the divided page unit processing step, the central processing unit sets the divided page on which the bad bit is generated using the location information on the checked bad bit as a bad divided page, In the recording step, the central processing unit records the content characteristic information and the distributed hard page information (address) in the header data area, and as the bad divided page exists in the content data area, the content data is recorded in the corresponding bad divided page. And recording the content data to be recorded on the bad partition page in the reserved area, and recording the content data in the normal partition page of the content data area. In the content recording method, Checking, by the central processing unit, a bad bit in which a failure occurs by inspecting a memory card implemented using a NAND flash memory device in which bad bits have occurred; A bad area unit processing step of processing, by the central processing unit, a bad bit in a bad area unit by using the location information on the identified bad bit; Setting, by the central processing unit, a header data area and a content data area in a normal area where a bad bit does not occur; And A recording step of the central processing unit recording the content characteristic information and the address of the bad area in the header data area, and recording the content data only in the normal area without recording the content data in the bad area existing in the content data area; Content recording method comprising a. The method of claim 37, wherein In the bad area unit processing step, the central processing unit sets the bits in which bad bits are generated using the location information on the checked bad bits as a bad area, In the recording step, the central processing unit records the content characteristic information and the address of the bad area in the header data area, and since there is a bad area in the content data area, the bad area is not recorded in the bad area. Skipping and recording the content data only in the normal area of the content data area. In the content recording method, Checking, by the central processing unit, a bad bit in which a failure occurs by inspecting a memory card implemented using a NAND flash memory device in which bad bits have occurred; A bad area unit processing step of processing, by the central processing unit, a bad bit in a bad area unit by using the location information on the identified bad bit; Setting, by the central processing unit, a header data area and a content data area in a normal area where a bad bit does not occur; And The central processing unit records the content characteristic information and the address of the bad area in the header data area, and the content data to be recorded in the bad area without recording the content data in the bad area existing in the content data area. A recording step for recording corresponding to the corresponding address in the area and recording the content data in the normal area of the content data area Content recording method comprising a. The method of claim 39, In the bad area unit processing step, the central processing unit sets the bits in which bad bits are generated using the location information on the checked bad bits as a bad area, In the recording step, the central processing unit records the content characteristic information and the address of the bad area in the header data area, and since there is a bad area in the content data area, the bad area is not recorded in the bad area. And skips and records the content data to be recorded in the corresponding bad area corresponding to the address in the header data area, and records the content data in the normal area of the content data area. . The method according to any one of claims 23 to 40, The content data recording process of the recording step, Canceling the write prohibition by inputting a signal for canceling the write prohibition of the write / delete prohibition terminal when the content data is first written to the memory card; And After recording the content data, setting the write / delete prohibition function of the write / delete prohibit terminal so that the user cannot change it arbitrarily; Content recording method comprising a. 42. The method of claim 41 wherein The header data area setting process may include: A method of recording content, characterized by searching for a header data area without a bad bit among a plurality of header data areas and recording the header data. The method of claim 42, The header data recording process, And recording authentication information for copyright protection in the header data area. 42. The method of claim 41 wherein The content data recording process of the recording step, And recording advertisement content data so as to be automatically reproduced before content data recorded in the content data area. In a content recording device having a processor, Checking, by the processor, a bad bit in which a failure occurs by inspecting a memory card implemented using a NAND flash memory device in which bad bits have occurred; A function of processing the bad bits in units of blocks by using the location information on the checked bad bits; The processor setting a header data area and a content data area in a normal block area in which a bad bit has not occurred; And The processor writes the content characteristic information in the header data area, and writes the content data only in the normal block without writing the content data in the bad block existing in the content data area. A computer-readable recording medium having recorded thereon a program for realizing this. In a content recording device having a processor, Checking, by the processor, a bad bit in which a failure occurs by inspecting a memory card implemented using a NAND flash memory device in which bad bits have occurred; A function of processing the bad bits in page units by using the location information on the checked bad bits; A function of setting, by the processor, a header data area and a content data area in a normal page area in which a bad bit does not occur; And The processor writes the content characteristic information in the header data area, and writes the content data only in the normal page without recording the content data in the bad page existing in the content data area. A computer-readable recording medium having recorded thereon a program for realizing this. In a content recording device having a processor, Checking, by the processor, a bad bit in which a failure occurs by inspecting a memory card implemented using a NAND flash memory device in which bad bits have occurred; A function of processing the bad bits in page units by using the location information on the checked bad bits; A function of setting, by the processor, a header data area, a content data area, and a reserved area in a normal page area in which a bad bit does not occur; And The processor records the content characteristic information in the header data area, writes the content data to be recorded in the bad page existing in the content data area in the reserved area, and stores the content in the normal page of the content data area. Function to record data A computer-readable recording medium having recorded thereon a program for realizing this. In a content recording device having a processor, Checking, by the processor, a bad bit in which a failure occurs by inspecting a memory card implemented using a NAND flash memory device in which bad bits have occurred; A function of processing, by the processor, the bad bits in division pages (subpages) based on the checked location information of the bad bits; A function of setting, by the processor, a header data area and a content data area in a normal page area in which a bad bit does not occur; And The processor writes the content characteristic information in the header data area, and writes the content data only in the normal split page without recording the content data in the bad split page existing in the content data area. A computer-readable recording medium having recorded thereon a program for realizing this. In a content recording device having a processor, Checking, by the processor, a bad bit in which a failure occurs by inspecting a memory card implemented using a NAND flash memory device in which bad bits have occurred; A function of processing, by the processor, bad bits in divided page units by using location information of the identified bad bits; A function of setting, by the processor, a header data area, a content data area, and a reserved area in a normal divided page area in which a bad bit does not occur; And The processor writes the content characteristic information in the header data area, writes the content data to be recorded in the bad divided page existing in the content data area, in the reserved area, and the normal divided page of the content data area. The ability to write content data to A computer-readable recording medium having recorded thereon a program for realizing this. In a content recording device having a processor, Checking, by the processor, a bad bit in which a failure occurs by inspecting a memory card implemented using a NAND flash memory device in which bad bits have occurred; A function of processing a bad bit in a bad area unit by the processor using the location information on the identified bad bit; A function of setting, by the processor, a header data area and a content data area in a normal area in which a bad bit does not occur; And The processor writes the content characteristic information and the address of the bad area in the header data area, and writes the content data only in the normal area without recording the content data in the bad area existing in the content data area. A computer-readable recording medium having recorded thereon a program for realizing this. In a content recording device having a processor, Checking, by the processor, a bad bit in which a failure occurs by inspecting a memory card implemented using a NAND flash memory device in which bad bits have occurred; A function of processing a bad bit in a bad area unit by the processor using the location information on the identified bad bit; A function of setting, by the processor, a header data area and a content data area in a normal area in which a bad bit does not occur; And The processor writes the content characteristic information and the address of the bad area in the header data area, and the content data to be recorded in the bad area without recording the content data in the bad area existing in the content data area. A function corresponding to the corresponding address in the data storage area and recording the content data in the normal area of the content data area. A computer-readable recording medium having recorded thereon a program for realizing this.

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