KR100636108B1 - Method of measuring recordable capacity/time of recording medium, method and apparatus of displaying thereof - Google Patents

Abstract

The present invention discloses a recordable capacity / time measurement method, display method and apparatus of a recording medium. The information structure of the recording medium is used to determine the type of the recording medium to obtain the total capacity, check the file system of the recording medium to obtain the recorded capacity from the file system, and check the search data of the recording medium to temporarily delete it from the search data. The recorded capacity obtained from the total capacity obtained by obtaining the taken capacity is subtracted and the temporarily deleted capacity is added to measure the recordable capacity to present a more effective recordable capacity and / or time in consideration of the temporarily deleted area. Convenience can be achieved.

Description

Method of measuring recordable capacity / time of recording medium, method and apparatus of displaying techniques

1 is a view for explaining a capacity display method which can be recorded in a conventional tape recorder.

2 is a view for explaining a capacity measuring method which can be recorded in a conventional tape recorder.

3 is a view for explaining the problem of the recording capacity measuring method of the conventional tape recorder.

4 is a diagram showing the information structure of a general disc.

5 is a flowchart according to an embodiment of a recordable capacity / time measurement method of a recording medium according to the present invention.

6 is an example of a recordable capacity / time display method of a recording medium according to the present invention.

TECHNICAL FIELD The present invention relates to the field of remaining amount display of a recording medium, and more particularly, to a method of measuring the recordable capacity / time of a disk medium, and a method and apparatus for displaying the measured recordable capacity / time.

In a recording / reproducing apparatus using a recordable / rewritable disc medium, it is possible to provide more convenience to the user if the recordable capacity and / or time is known. Thus, there is a need for a function of measuring and displaying the recordable capacity / time of a recording medium being used. However, conventionally, since there is no home appliance using a recordable / rewritable disc having such a function, a home appliance using a tape having such a function will be described as an example.

1 is a view for explaining a method of displaying a recordable capacity in a recorder using a conventional tape. The conventional tape recorder has a counter 20 for counting the recording time of the tape 10 and a calculator 30 for calculating the recordable time using the value counted by the counter 20, and can be recognized by the user. And a display device 40 for displaying the recordable time calculated on the exterior (e.g., front) of the recorder. In general, a recorder may be referred to as including a recording function as well as a playback function.

2 is a diagram for explaining a method of measuring a recordable capacity in a conventional tape recorder. When recording is performed using the tape, the recording time is counted based on the tape state wound in the initial state. At this time, the recordable capacity is obtained by subtracting the value of the counter counting the recording time built into the tape recorder from the total capacity of the tape. In order to find out the recordable capacity in this way, the user must input the total capacity of the tape in advance, and additional work such as resetting the counter in advance is required.

3 shows an example in which a conventional method is not applied in measuring a recordable capacity in a tape recorder. The method of measuring the recordable capacity of the tape shown in FIG. 2 is effective only when existing recorders perform recording sequentially. In other words, if it is not recorded sequentially, if a previously recorded part is deleted, or if there is a part that can be reused (that is, recorded), such as data that has been deleted but kept for later deletion by the user. These parts are not considered recordable capacity. Here, "deleted data, but stored for future user cancellation" means that the original data is temporarily deleted. When the data is exceeded the capacity of the recording medium, the temporary data is deleted and new data is recorded. . Therefore, the actual recordable capacity is a value obtained by subtracting a count value representing the capacity of a recording medium already used for recording from the total capacity, and adding a (temporary) erasing interval to a value obtained in the past. There was no measurement method.

Therefore, in the case of a disk medium, unlike a tape medium, a recordable capacity cannot be known by a physical method, and a recordable capacity is measured because it uses a technique that is not actually deleted but logically deleted, such as temporary deletion. A new way of doing this was needed.

 Accordingly, it is an object of the present invention to provide a method for measuring the recordable capacity / time of a recording medium in consideration of a temporary erasure section which has not been proposed in the past.

Another object of the present invention is to provide a method for displaying the capacity / time of a measured recording medium.

Another object of the present invention is to provide a method for displaying the capacity / time of a recording medium according to a user's request.

Another object of the present invention is to provide a method for automatically displaying the capacity / time of a recording medium.

Another object of the present invention is to provide an apparatus for displaying the capacity / time of a measured recording medium.

In order to achieve the above objects, the measuring method according to the present invention is a method for measuring a recordable capacity of a recording medium, comprising the steps of: determining the type of the recording medium to obtain a total capacity; Obtaining the already recorded capacity from the system, checking the search data of the recording medium to obtain the temporarily deleted capacity from the search data, and subtracting the recorded capacity obtained from the obtained total capacity and adding the temporarily deleted capacity to the recordable capacity. It characterized in that it comprises the step of calculating.

A display method according to the present invention is a method for displaying a remaining amount of a recording medium in a recording medium and / or an application having an application capable of temporarily erasing: detecting the total capacity, recorded capacity, and temporarily deleted capacity of the recording medium. And displaying the detected total capacity, the recorded capacity, and the temporarily deleted capacity.

In addition, the display device according to the present invention is an apparatus for displaying a remaining amount of a recording medium for a device having an temporarily erasable recording medium and / or an application: the total capacity of the recording medium, the recorded capacity, and the temporarily deleted capacity. And a display for displaying the recording capacity / time and the recordable capacity / time based on the detector to detect and the total capacity detected, the recorded capacity, and the temporarily deleted capacity.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the recording capacity / time measurement method, display method and apparatus of the recording medium according to the present invention.

The present invention needs to consider a temporarily deleted area in displaying a recordable capacity in the case of a recording medium, particularly a disk medium, having a function such as temporary erasure. This is because the temporarily deleted area can be reused if necessary by the judgment of the user or the device.

4 shows an information structure of a general recordable disc. The information structure of a disc consists of three layers: a physical specification, a file system, and search data. The physical specification shows the total disk capacity, the file system shows the recorded capacity, and the search data shows the temporary deleted capacity.

5 is a flowchart according to an embodiment of a recordable capacity / time measurement method of a recording medium according to the present invention.

When the disc is inserted (step S101), the type of the disc is determined using the physical standard (step S102). That is, it is determined whether the disc is a CD (Compact Disc), a DVD (Digital Versatile Disc), 2.6 GB (Giga bytes) of DVD Random Access Memory (DVD-RAM), or 4.7 GB of DVD-RAM. This disc discrimination information can be obtained in the lead-in area of the disc, but can also be obtained through the reflectance of the disc. This is because the reflectance is different depending on the type of disk. Once the type of disk is determined, the total capacity of the disk can be known.

If the type of the disc is determined in step S102, the existence of a file system is checked (step S103). This is because the file system may not exist depending on the application field, and a file system which is not supported by the recording / reproducing apparatus may be recorded on the disc. That is, even the same DVD-RAM disk may have a file system used by Microsoft Windows or may be a file system used by Unix or Machitoshi. The file system connects logical and physical information. That is, it provides information such as which part of the disk the file used by the application is physically recorded, how large the file is, and how many files. Thus, using a file system, you can see how much space a file occupies in the user area of a disk.

It is checked whether such a file system can be recognized (step S104), and if the file system does not exist or the file system is unknown to the recording / playback device (when the file system read fails), the recording / playback device records before accepting the disc format. Since it is impossible to do so, it is determined that there is no recordable capacity in step S109.

On the other hand, if it is determined in step S104 that the file system exists, after reading the file system (step S105), the search data is checked to check the capacity of the temporarily deleted portion (step S106).

It is determined whether the search data can be recognized (step S107), and if there is no search data or there is no part temporarily deleted, the recordable capacity calculated in step S109 is a value obtained by subtracting the recorded capacity from the total capacity, i. Recorded capacity ”.

If it is determined in step S107 that the search data exists, the search data is read (step S108), and the recordable capacity is calculated (step S109), that is, the actually recordable capacity is subtracted from the total capacity and the capacity temporarily deleted. Is a value obtained by adding, i.e., "full capacity-recorded capacity + temporarily deleted capacity".

The recordable capacity found by this process may be expressed in units of capacity (eg, bytes), but it is more effective for the user to express the concept of time. Therefore, the recordable time is obtained by dividing the recordable capacity by the recording speed (bit rate) and displayed (step S110).

The step S110 of displaying the recordable capacity / time may be performed automatically or according to a user's request.

FIG. 6 is a display showing disk capacity, temporary erased capacity, and recordable capacity measured by the measuring method shown in FIG. 5 using the structure of a disk having the physical standard, file system and search data shown in FIG. An example of the device is shown. For example, the display device may be displayed on the outside of the recording / reproducing apparatus by using a fluorescent liquid crystal tube (FLT) so that a user who sets an execution mode such as a recording mode can easily check the remaining amount.

Therefore, the display device shown in FIG. 6 displays "recording time" representing the time at which recording has proceeded, and "recordable time" of the recordable time in the future. In this case, the recordable time may or may not include the temporarily deleted area according to a user's selection. Disk capacity, temporary deleted capacity, in addition to displaying the time numerically. Recordable capacity can be displayed separately.

An example to which FIGS. 4, 5, and 6 can be applied is a DVD video recorder. The DVD video recorder has a 2.6GB DVD-RAM physical standard, UDF (Universal Disc Format 1.5 / 2.0) file system, and search data stored in a file called RTR.IFO. The system controller of the DVD video recorder (which may be referred to as a detector) can know that the total capacity of the disc is 2.6GByte using the physical standard of the recording / storage medium, and it is currently present on the disc using the file system. The size of the files to be recorded, that is, the recorded capacity can be known, and the capacity temporarily deleted using the search data can be known. The information thus obtained may be displayed as shown in FIG.

The present invention can facilitate user's convenience by presenting more effective recordable capacity and / or time in consideration of the temporarily deleted area which has not been considered until now.

Claims (15)

A method of measuring the recordable capacity of a recording medium: (a) determining the type of recording medium to obtain a full capacity; (b) checking the file system of the recording medium to obtain a capacity already recorded from the file system; (c) checking the search data of the recording medium to obtain a temporarily deleted capacity from the search data; And (d) subtracting the recorded capacity obtained in step (b) from the total capacity obtained in step (a) and adding the temporary deleted capacity obtained in step (c) to calculate the recordable capacity. Measuring method of recordable capacity of record carrier. The method of measuring a recordable capacity of a recording medium according to claim 1, wherein in the step (a), the total capacity is obtained by determining the type of the recording medium according to one of a physical standard of the recording medium and a reflectance of the recording medium. . The method of claim 1, wherein if the result of checking the file system in step (b) does not exist or fails to read the file system, in step (d), it is determined that there is no recordable capacity. A method of measuring the recordable capacity of a recording medium. The method of claim 1, wherein if it is determined that the search data does not exist or there is no capacity temporarily deleted from the search data in step (c), the capacity recorded in the full capacity is determined in step (d). A method for measuring the recordable capacity of a recording medium, characterized in that the subtracted value is calculated as a recordable capacity. The method of claim 1, wherein and (e) dividing the recordable capacity calculated in step (d) by the speed of recording to obtain a recordable time. A method of displaying the remaining amount of a recording medium in a device having a recording medium and / or application capable of temporary erasing: (a) detecting the total capacity, recorded capacity, and temporarily deleted capacity of the recording medium; And and (b) displaying the recordable capacity in consideration of the detected total capacity, the recorded capacity, and the temporarily deleted capacity. The method of claim 6, wherein step (b) And displaying (b1) the recording time and the recordable time based on the detected total capacity, the recorded capacity, and the temporarily deleted capacity. 8. The method according to claim 7, wherein in the step (b), the recordable time may or may not include a temporarily deleted capacity according to a user's selection. 8. The method according to claim 7, wherein in the step (b), the recording capacity / time and the recordable capacity / time are displayed numerically and / or graphically. The method of claim 6, wherein step (a) (a1) detecting the total capacity by determining the type of the recording medium; (a2) checking a file system of the recording medium to detect a recorded capacity from the file system; And (a3) checking the search data of the recording medium to detect a capacity temporarily deleted from the search data. The method according to claim 10, wherein in the step (a1), the total capacity is obtained by determining the type of the recording medium according to one of the physical standards of the recording medium and the reflectance of the recording medium. An apparatus for displaying a remaining amount of a recording medium for a device having a recording medium and / or application capable of temporary erasure: (a) a detector for detecting the total capacity, recorded capacity, and temporarily deleted capacity of the recording medium; And and (b) a display for displaying at a recording capacity / time and a recordable capacity / time based on the detected total capacity, recorded capacity, and temporarily deleted capacity. 13. The detector according to claim 12, wherein the detector detects the total capacity by determining the recording medium type using the physical standard or the reflectance of the recording medium, detects the capacity recorded from the file system of the recording medium, and searches the search data of the recording medium. The remaining capacity display device of the recording medium, characterized by detecting the capacity temporarily deleted from the recording medium. The apparatus according to claim 12, wherein the display displays the recording capacity / time and the recordable capacity / time numerically and / or graphically. The remaining amount display device of the recording medium according to claim 12, wherein the remaining amount display device of the recording medium is a fluorescent liquid crystal tube.

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