KR100317628B1 - Audio and video data recording and reproducing apparatus using a memory card and its method - Google Patents

Abstract

1. Technical field to which the invention described in the claims belongs: Digital data recording and reproducing apparatus of audio and video information

2. Technical problem to be solved by the invention: Memory card type audio player is connected to a PC to enable recording and playback.

3. Summary of the Invention: An apparatus according to the present invention is an apparatus for recording and reproducing audio and video digital data, wherein the digital data format information is stored so that the audio and video digital data can be stored and recorded in at least one digital format. A memory card, comprising: a format information storage area having an information recording area for storing audio and video digital data in various digital forms; Determining whether the memory card can be attached or detached and whether the memory card is mounted on the adapter is determined by using the state information in the memory card, and when the memory card is available, the digital data format information is used. Digital data formats of the recorded audio and video digital data, reproducing the digital data stored in the information recording area of the memory card, recording the internally generated digital data on the memory card, and recording the digital data on the memory card. A personal computer that plays back data or stores it on its own recording medium; And a computer interface means connected to the adapter and the personal computer to interface the personal data with the digital data of the memory card so that the personal computer recognizes the predetermined digital data of the memory card mounted on the adapter.

4. Important uses of the invention: memory card

Description

Audio and video data recording and reproducing apparatus using a memory card as a medium and a method thereof

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for recording and reproducing digital data using an integrated circuit (IC) memory card (hereinafter, abbreviated as "memory card"). In particular, the present invention relates to a memory card for recording audio and video information using a single device and a personal computer. The present invention relates to an apparatus and method for recording and playing back.

As the digitalization of signal processing proceeds, various recording media have been introduced. For example, digital information recording / reproducing apparatuses such as personal computers, CDPs, DATs, MDs, CD-ROMs, and the like use disc-type recording media and tape-type recording media. These devices not only record and play back in different ways, but also use different types of recording media. Thus, if any one recording medium is used in the recording medium and the mutually compatible device, it does not work at all. This operation will be described below with reference to one example of a compact disc and a hard disc that can be referred to as a representative digital recording medium.

A device using a compact disc, named optical pickup, moves from the inner circumference to the outer circumference of the compact disc and reads the recorded data. On the other hand, a device using a hard disk (hard disk drive) uses a magnetic head to read data by finding a predetermined sector or cluster in a FAT or a root directory.

As mentioned above, their data reading methods and forms are very different. Thus, some systems cannot play or even recognize the disc unless they conform to the respective recording method and type.

On the other hand, Application No. 277O5, which was assigned to the applicant of the present application filed in 1994, solved this problem by using a memory card having a recording format standardized to use all the various information. The structure of the memory card and its corresponding format are described in detail in heading 94-27705.

In the present invention, using such a memory card and a personal computer to play audio and video data desired by the user in a portable device that is easy to carry. In addition, the personal computer stores or plays back information on the memory card in its mass storage medium, and allows the user to store audio and video data of the personal computer desired by the user on the memory card. The memory card has advantages such as fast search and high recording / playback speed, easy recording, simple storage, and long life.

Accordingly, an object of the present invention is to provide an apparatus and method capable of recording and reproducing digital audio and video data on a personal computer using a memory card and reproducing on a single device.

Another object of the present invention is to provide an apparatus and method for reproducing data recorded in a personal computer using a memory card in a single device or a personal computer.

It is still another object of the present invention to provide an apparatus and method for reproducing data recorded on a memory card recordable device on a personal computer or re-recording in a predetermined recording form.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the same components or parts in the figures use the same reference numerals wherever possible.

Fig. 1 is a view showing the external structure of the digital data recording and reproducing apparatus of the present invention using a memory card. Referring to FIG. 1, a digital recording / reproducing apparatus includes a single device 4 and a personal computer 6, which are dedicated to the reproduction of the audio and video data using a memory card 2. It is a device to perform. The personal computer 6 performs the recording and reproducing of the audio and video data using the memory card 2 as in the function of the single device 4.

In the personal computer 6, an add-on board 8 for interfacing the personal computer 6 and the memory card 2 is mounted inside the main body of the personal computer 6 to perform such an operation. The cable 10 and the adapter 12 is provided. The adapter 12 performs a function of making the memory card 2 detachable and allowing the personal computer 6 to recognize the memory card 2. The cable 10 connects the adapter 12 and the add-on board 8. The add-on board 8 provided inside the main body 6 allows the personal computer 6 and the memory card 6 to recognize predetermined digital data of the memory card 2 mounted on the adapter 12. Computer interface means for interfacing the digital data of 2).

The memory card 2 according to an embodiment of the present invention includes a format information storage area having digital data format information for storing audio and video data in at least one or more digital recording formats, and a variety of audio and video digital data. It is composed of an information recording area stored in digital form.

2 shows the logical information area in the memory card 2, which is divided into a format information storage area and an information recording area. The format information storage area comprises a computer compatible record format information area 50 and a recording format information area 52 for a single device 4. The information recording area is an actual data recording area 54 in which actual data is recorded.

3 is a diagram showing various recording data that can be stored in the memory card 2. Referring to FIG. 3, for example, audio data may be recorded in the region 60 of the recording data 1, and video data may be recorded in the region 62 of the recording data 2. FIG. The data recorded in the areas 60 and 62 of the recording data 1 and the recording data 2 may be any data that can be digitalized, such as compressed audio / video, PCM (Pulse Code Modulation) data, compressed video, and general data files. However, data reproduction in the areas 60 and 62 depends on hardware or software of the corresponding device (personal computer or single device). Immediately below the recording data station 60, 62 is a status memory and data map area 64, which contains the physical and logical information areas for the memory card 2. In the state memory, the type, capacity, recording format version information, manufacturer and recorder (for playback) information, card version and date of manufacture, bad block management method and information, etc., used are recorded. In the data map area, location information on which actual data is recorded, information size, recording time, data name, and the like are recorded. The state memory and data map area 64 are read at the time of initialization by the single device 4 or the personal computer 6 or the like.

4 is a diagram showing in detail the configuration of the digital data recording and reproducing apparatus of FIG. 1 according to the embodiment of the present invention.

As shown in FIG. 4, the specific block related to the personal computer 6 in the digital data recording and reproducing apparatus of FIG. 4 is a cable 10 and an adapter 12, an add-on board 8 as an interface means, and a computer control unit ( 14), execution program 16, computer reproducing section 18, and computer output section 20. The cable 10, the adapter 12, and the ed on board 8 perform the functions as described above with reference to FIG. 1. The computer controller 14 controls audio or video data in a large-capacity recording medium (for example, a hard disk drive (HDD)) of the personal computer 6 to be recorded to the memory card 2 or to the memory card 2. The recorded data is read and controlled to be recorded on the internal mass storage medium. In addition, the computer reproducing unit 14 controls the audio or video data recorded on the internal large-capacity recording medium. The computer reproducing section 14 also controls the audio or video data read from the memory card 2 to be reproduced. The computer player 14 plays a role of reproducing audio or video data applied through the computer controller 14. A representative example of the computer control unit 14 is such as a moving picture expert group (MPEG) card. The computer output section 20 allows a personal computer user to listen to or watch the audio or video data reproduced by the computer playback section 18. The execution program 16 is a program to be executed by the computer control unit 14.

The specific block related to the single device 4 in the digital data recording and reproducing apparatus of FIG. 4 includes a single device connecting portion 22, a single device control section 24, a single device reproducing section 26, and a single device output section 28. FIG. Doing. An example of the single device 4 may be a memory card type audio player, a memory card type video player, or the like. In the single device 4 of FIG. 4, the single device connection portion 22 performs a function of allowing the memory card 2 to be detachably mounted and allowing the single device control unit 24 to recognize it. The single device control section 24 reads the data of the memory card 2 mounted on the single device connection section 22 and controls the single device 4 to reproduce the data by the single device user. The single device reproducing unit 26 plays a role of reproducing data (audio or video data) applied through the single device control unit 24. The single device output section 28 allows a single device user to view or hear the video or audio data reproduced by the single device playback section 26.

The digital data recording and reproducing apparatus of the present invention constituted by the above-described first to fourth embodiments can be broadly divided into those in which the memory card 2 is connected to the personal computer 6 and operated in a single device 4. . A specific example of the operation is as follows.

The single device 4 is a device that a user can carry freely. In addition, the personal computer 6 has a large-capacity recording medium, which can record a large amount of video or audio data, but is not portable or convenient. Therefore, the user can record the audio or video information in the mass storage medium of the personal computer 6 in the recording format for the single device 4 on the memory card 2 according to the embodiment of the present invention. When the single device user carries the single device 4, the user can read the audio or video information recorded on the memory card 2 to listen to the audio or watch the video. When data is recorded on the memory card 2 by using a device capable of recording on the memory card 2, the data recorded on the memory card 2 is reproduced by the personal computer 6 or the memory is stored again in a predetermined recording form. It is also possible to record on the card 2. If the predetermined recording format is a recording format for the single device 4, the single device 4 can reproduce the data recorded by the personal computer 6 again.

First, the operation in the case of reproducing the data of the memory card 2 in the single device 4 will be described. When the user mounts (inserts) the memory card 2 into the single device connection part 22, the single device control unit 24 opens the state memory configured in the memory card 2 through the single device connection part 22. First, the state of the memory card 2 currently inserted is checked. Here, the single device control unit 24 can grasp the type of memory used, version information of the capacity recording format, manufacturer and recorder (for playback) information, card version and date of manufacture, bad block management method and information, and the like. . When the memory card 2 installed (inserted) is confirmed in this way, the single device controller 24 determines whether it can be used. If the card is available, the data structure information is read from the position of the detailed format information of the card using the version information already read. So far, this is done in the initialization process.

If the initialization is successful, the single device 24 enters the standby state for actual operation. In the standby state, the single device controller 24 maintains only the minimum power while waiting for a key input by the user. If there is any key input (e.g., playback request), the single device control section 24 judges the validity thereof and takes the corresponding action. In fact, like the memory card 2, the single device 4 can be divided into a case where both recording / reproduction is possible and only playback is possible. When both recording and reproducing are possible, since a sow recording prevention system is defined in the memory card 2, it operates with reference to this.

For example, when a single device user requests playback of a specific audio recorded on the memory card 2, the single device control unit 24 corresponds to the memory card 2 mounted (inserted) in the single device connection unit 22. Read the information. When the corresponding information is read out, the single device controller 24 stores the information recorded in the status memory and data map area 64 of the memory card 2 and the recording format information area 52 for the single device 4. Use the information in the

In fact, the types of data recorded on the memory card 2 can be divided into those that are greatly compressed and those that are not. This information can be obtained from the data structure information. In this case, when the data is compressed, the single device control unit 24 decompresses the compressed data using a preset decompression program and outputs the compressed data to the single device reproducing unit 26. The single device reproducing section 26 converts the audio or video digital data into analog data and sends the same to the single device output section 28. The single device output unit 28 outputs audio or video data for the user to listen to or watch. Therefore, a single device user can listen to or watch audio or video stored in the memory card 2 using the single device 4.

Next, when the single device 4 reproduces the data of the memory card 2 on the personal computer 6 or records the data stored in the mass storage medium of the personal computer 6 to the memory card 2. The operation of the will be described.

As shown in Figs. 1 and 4, when the user mounts the memory card 2 in the adapter 12 for recording or playback, the personal computer control unit 14 via the cable 10 and the add-on board 8 ) Recognizes this and performs initialization. In the embodiment of Figs. 1 and 4, the adapter 12 is installed externally, and the connection to the main body of the personal computer 6 is used using the cable 10 as an example. It is preferable to embed 12 in the main body of the personal computer 6.

The initialization operation performed by the computer control unit 14 is almost similar to the initialization operation of the single device 4 described above. In this case, the initialization of the hardware is performed by the adapter 12, and when the initialization of software is required, the personal computer 6 informs it so that the computer control unit 14 can do it. The software initialization is different from the hardware, and may be performed by software instructions while using the adapter 12.

Once the verification and initialization of the memory card 2 mounted (inserted) in the adapter 12 is finished, subsequent recording and reading operations will vary depending on the software for the version, but the basic operation is performed on the standalone device 4. Is almost the same as The difference is that the implementation is made of software of the personal computer 6. However, if the hardware available for the same purpose is already mounted in the computer main body, it is desirable to inspect and use it. In this case, the use is performed only internally and is not exposed to the user interface. An important role here is the cooperation between the interface card, Addon Board (8), and the software that executes the program. Without the interface card, the adapter 12 cannot be used, the operation is unstable, and many problems are caused in the data transmission. The software also behaves unexpectedly.

Accordingly, the personal computer 6 recognizes the digital data formats recorded on the memory card 2, reproduces the digital data stored in the information recording area of the memory guard 2, and stores the digital data generated therein in the memory. It is also recorded on the card (2).

As an example, first, the operation of reproducing the audio data recorded on the memory card 2 by the personal computer 6 will be described. The computer control unit 14 performing the initialization enters a standby state for actual operation. In the standby state, the computer control unit 14 maintains only the minimum power while waiting for a key input by the user. When there is any key input (e.g., a playback request), the computer control unit 14 judges the validity thereof and takes an action corresponding thereto. As described above, when a computer user requests playback of a specific audio recorded on the memory card 2, the computer controller 14 is attached to the adapter 12 through the add-on board 8 and the cable 10 ( Read the information from the inserted memory card (2). When reading the corresponding information, the computer control unit 14 records the computer compatible recording format information in the computer compatible recording format information area 50 of the memory card 2 and the status memory and data map area 64. Use information. If the data read from the memory card 2 is compressed, the computer control unit 14 decompresses the data using a decompression program, and then sends audio data to the computer reproducing unit 18. It is sent directly to the computer playback unit 18. The computer reproducing section 18 performs a predetermined reproducing operation, such as converting digital audio data into analog audio data, and sends it to the computer output section 20. Accordingly, the computer output unit 20 outputs audio data for the user to listen to. Therefore, the computer user can use the personal computer 6 to listen to the audio stored in the memory card 2. If the computer user requests that the audio data read from the memory card 2 be recorded on its mass storage medium without reproducing, the computer controller 14 records the audio data on the mass storage substitute.

As another example, the operation in the case where the personal computer 6 first records audio data in its mass storage medium on the memory card 2 will be described as follows. The computer control unit 14 performing the initialization enters a standby state for actual operation. In the standby state, the computer control unit 14 maintains only the minimum power while waiting for a key input by the user. When the user inputs the keys for selecting the desired audio data from the audio data on the mass storage medium of the personal computer 6 and recording it on the memory card 2, the computer control unit 14 determines the validity thereof. To perform the corresponding operation. That is, the computer controller 14 converts the selected audio data into a specific recording format suitable for a single device, and is mounted (inserted) in the adapter 12 through the add-on board 8 and the cable 10. Record as (2). When audio data is recorded on the memory card 2, the computer compatible recording format information in the computer compatible recording format information area 50 and the information recorded in the status memory and data map area 64 are used.

When the audio data is recorded on the memory card 2 in this way, the single device 4 can perform the above-described operation to reproduce the audio data on the memory card 2.

On the other hand, when the user records the data (file) in a specific format using a specific device capable of recording data on the memory card 2, the personal computer 6 interprets the data and, if compatible, converts the data in the interpreted specific format to the computer. The recording format is converted to a recording format for a single device or recorded on the memory card 2. In this case, playback can be performed not only by the personal computer 6 but also by the single device 4.

As described above, the digital recording / reproducing apparatus of the present invention can control memory cards of various forms (capacity, memory elements, etc.). This has many advantages over other existing digital recording media. First, it has much faster recognition and search speed. It also has ease of storage and stability. Increasingly, the importance of memory capacity through integration has narrowed the gap with existing media and prices have been falling. Therefore, it is possible to develop various devices using the same. And most importantly, no mechanical mechanisms are used, resulting in lower manufacturing costs and easier control, resulting in higher reliability.

1 is a diagram schematically showing a digital data recording and reproducing apparatus of the present invention using an IC memory card.

2 illustrates a logical information area in an IC memory card according to the present invention.

3 is a diagram showing various recording data stored in a memory card according to the present invention.

4 is a view showing in detail the digital data recording and reproducing apparatus according to the present invention.

Explanation of symbols for main parts of the drawings

2: memory card 4: standalone

6: Personal Computer 8: Add-On Boards

10: cable 12: adapter

Claims (13)

In the audio and video digital data recording and reproducing apparatus, And a format information storage area having digital data format information for storing and recording the audio and video digital data in at least one digital format, and an information recording area for storing audio and video digital data in various digital formats. Possible memory card; An adapter for attaching and detaching the memory card; The use of the memory card mounted in the adapter is determined using the state information in the memory card. If the memory card is in the available state, the digital data formats of audio and video digital data recorded using the digital data format information are determined. A personal computer that recognizes and reproduces the digital data stored in the information recording area of the memory card, records the digital data generated therein in the memory card, reproduces the digital data recorded in the memory card, or stores it in its own recording medium. ; And computer interface means connected to the adapter and the personal computer to interface the digital data of the personal computer with the memory card so that the personal computer recognizes the predetermined digital data of the memory card mounted on the adapter. Audio and video data recording and reproducing apparatus. 2. The recording and reproducing apparatus for audio and video data according to claim 1, wherein the information recording area of the memory card includes information such as compressed audio / video, PCM data, compressed video, general data files, and the like. Corresponding information is recorded in a computer compatible recording format information area, a recording format area for a single device, a status memory and a data map area, and includes a portable memory card, an adapter capable of attaching and detaching the memory card, and mounting on the adapter. A method of recording and reproducing audio and video information in a personal computer having the personal computer and the computer interface means for interfacing the digital data of the memory card so that the personal computer recognizes the predetermined digital data of the memory card. , A first step of reading the state memory configured in the memory card when the memory card is mounted in the adapter to determine the state of the currently inserted memory card and to determine whether the memory card can be used; A second process of reading detailed structure information of the data at the position of the detailed format information of the card by using the version information read together when reading the state memory, if the memory card is a usable card; The memory card using computer compatible recording format information, recording format information for a single device, status memory and data map information when there is a request from the user to the memory card or a playback request from the memory card in the standby state after the second process. And a third step of reproducing the data recorded in the personal computer or recording the data of the personal computer on the memory card. 4. The state memory according to claim 3, wherein the state memory includes a type of memory used, a capacity, version information of a recording format, manufacturer and recorder (for playback) information, a card version and a manufacturing date, a bad block management scheme and information. And recording and reproducing audio and video data. 4. The recording and reproducing method of audio and video data according to claim 3, wherein the standby state is maintained with only minimal power while waiting for a subsequent key input. 4. The method for recording and reproducing audio and video data according to claim 3, wherein the type of data recorded on the memory card is divided into two types, which are largely compressed and uncompressed. The method of claim 3, If there is a request to rewrite predetermined data recorded on the memory card from the user in accordance with a predetermined single device format in the standby state after the second step, computer compatible recording format information, recording format information for single device, status memory and data map information. And reading out the data recorded on the memory card using the memory card, changing the data to match the format of a single device, and writing the data back to the memory card. In the audio and video digital data recording and reproducing apparatus, A memory card having a computer compatible recording format information area, a recording format area for a single device, a status memory and a data map area, and having an information recording area in which audio and video digital data are stored in various digital forms; A portable device which is portable and reproduces the information recorded on the memory card; The single device is; A single device connection unit for removably attaching and recognizing the memory card; When the memory card is mounted in the single device connection unit, the state memory is read to determine the state of the currently installed memory card to determine whether it can be used. An initialization process for reading the detailed structure is performed, and when a user requests reproduction of predetermined data, audio or video is recorded in the information recording area of the memory card by using the information of the recording format area, the state memory and the data map area for the single device. An audio and video digital data recording and reproducing apparatus, characterized by comprising a single device control unit for reproducing digital data. 9. The state memory of claim 8, wherein the state memory includes a type of memory used, a capacity, version information of a recording format, manufacturer and recorder (for playback) information, a card version and a manufacturing date, a bad block management scheme and information. Audio and video digital data recording and playback device characterized in that. In the audio and video digital data recording and reproducing apparatus, A format information storage area having data format information for recording / recording in at least one or more formats for the audio and video data, a memory status information recording area for storing memory status information, and the audio and video data. A memory card comprising an information recording area for storing in a predetermined format; A memory card storage unit to allow the memory card to be inserted and detached and recognized; And recording and reproducing at least one of audio and video data to and from the information recording area of the memory card by recognizing format information and memory state information of the memory card. Device. 11. The recording and reproducing apparatus for audio and video digital data according to claim 10, wherein the information recording area of the memory card includes information such as compressed audio / video, PCM data, compressed video, general data files, and the like. 11. The memory state information recording area of the memory card according to claim 10, characterized in that the type of memory used, capacity, version information of the recording format, manufacturer and recorder (for playback) information, card version and date of manufacture, and bad block management. An audio and video digital data recording and reproducing apparatus comprising a method and information. The audio and video digital data recording and reproducing apparatus according to claim 10, further comprising an interface unit for transmitting and receiving data of the memory card with an external device.