KR0135259Y1 - Tape control device using password - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

A method of managing image data recorded on a tape by recording a password on the tape.

2. The technical problem the invention is trying to solve:

Due to a mistake of the user or another person, the contents of the tape are lost or the image information of the tape is opened to the other person.

3. The gist of the solution of the devise:

A memory having a password recording area and an image information recording area in a tape to record a password on each tape, so that the playback and recording functions are performed when the passwords are compared and matched during playback or recording.

4. Important uses of the devise:

Tape that can record or play back information.

Description

Tape management device using a password.

1 is a block diagram showing the configuration according to the present invention.

2 is a diagram showing the structure of recording data according to the present invention;

3 is a diagram showing a memory structure of a tape with a memory according to the present invention.

4 is a diagram illustrating a control flow in recording a password according to the present invention.

5 is a diagram showing a control flow during tape playback and recording according to the present invention.

* Explanation of symbols for main parts of the drawings

10: MIC 12: Micom

14: key input unit 16: display unit

The present invention relates to a digital VCR supporting a cassette tape internal storage device (Memory In Cassette Type, hereinafter referred to as MIC), and more particularly to a method for efficient management of a tape having a memory.

In general, since the cassette tape is not provided with a security device, anyone can listen or watch when it is prevented. As a result, in the case of important cassette tapes, thorough management is required to prevent them from being lost or spilled.

Conventionally, when a user manages a cassette tape, it often occurs that another user mistakenly records another image data on the tape, thereby damaging the image data of the previously recorded tape. In addition, a variety of problems are caused by the reproduction of image data information that should not be shown to others.

Accordingly, an object of the present invention is to provide a device for managing a tape using a password for preventing a user from playing or recording by recording a unique password in a MIC in a digital VCR supporting a cassette internal storage device (MIC). There is.

Another object of the present invention is to provide a tape management apparatus using a password for individually managing tapes by setting prohibition of recording or reproducing in MIC, which is a storage device inside a tape.

Another object of the present invention is to provide a tape management apparatus using a password for individually managing tapes by recording whether or not a password is set in the MIC, which is a storage device inside the tape.

1 is a view showing a block configuration according to the present invention,

A MIC 10 comprising a user password recording area and an area for recording image data, a tape 12 including the MIC 10, and a password and image data recorded on the MIC 10; A microcomputer 14 to reproduce, a key input unit 16 which holds a plurality of keys, and generates a key command such as setting or recording or playing the password input according to key input, and the password input state or password mismatch. And a display unit 18 for displaying a warning state. In addition, I ² C is a communication line composed of two lines connecting the MIC 10 and the microcomputer 14, which are memories of the tape 12, and is composed of a clock line and a data line. (The Vcc line and the ground line, which are power lines, between the MIC 10 and the microcomputer 14 are omitted.)

2 is a diagram showing the structure of recording data according to the present invention;

When password data is recorded in the MIC 10, it is required to record in units of 5 bytes. The first byte (pc0) tells the microcomputer 14 of the meaning of the following four bytes of data. In this case, the first byte (pc0) is f1h indicating data for setting the password, and by f1h, the microcomputer 14 can know that the next four bytes of data indicate a password.

The bits pb and rec in the second byte pc1 indicate that the recording or reproducing operation is prohibited when the value is set to a value of 1. That is, the fact that the playback bit (pb) is set to 1 means that playback of the tape 12 is prohibited, and playback is allowed only when the same password as the password recorded in the MIC 10 is input. In addition, since the write bit operates in the same manner, description thereof is omitted. Two bits of the play (rb) bit or the play (rec) bit can be set independently of each other. In addition, data 1 to data 4 are values of 4 digits when setting a password. For example, assuming that 10 numbers, 26 uppercase letters, and 26 lowercase letters can be written, all 62 characters can be recorded. As a result, only six bits per password can be used to record a four-digit password. (6 bits can record 64 different pieces of information.)

In the above example, the four-digit password is taken as an example, but can be extended to eight or sixteen digits.

3 is a diagram showing the structure of the MIC which is a memory of a tape having a memory according to the present invention,

The MIC 10 is largely divided into a space 0 and a space 1 area. The area corresponding to space 0 is bank 0, and the area corresponding to space 1 includes memory areas from bank 1 to bank 255. Since each bank has a capacity of 64 kilobytes (Kbyte), the total size of the MIC 10 is 16 bytes. Since the area of the space 1 is an area for recording video data which is mainly image data, the password data to be recorded in the present invention is recorded in the area of the space 0. Various data are recorded in the space 0, and an area in which the password data can be recorded is limited. Specifically, the area in which the password can be recorded in the present invention is limited to an area called MAKERS OPTIONAL EVENTS. In the APM and BCID areas, the thickness, grade, and type of tape are recorded by the manufacturer.

Therefore, an embodiment of the present invention will be described in detail with reference to FIGS. 4 to 5.

First, a method of recording a password on the tape 12 is shown in FIG.

If there is a key input of the user who wants to set a password in step 20 of FIG. 4, the microcomputer 14 receives the input and displays on the display unit 18 that the password is set in step 22. Thereafter, the microcomputer 14 searches for the MIC 10 having the data structure of FIG. 2 format in step 24, and determines whether there is data f1h indicating data for password setting in step 26. If it is found in step 26 that the f1h data exists, the password has already been set, and the microcomputer 14 displays a warning message on the display unit 18 that the password has already been set in step 30. In addition, the microcomputer 14 determines whether to change the set password to other data or stop the operation in step 32 and waits for a user input.

In step 32, when an input indicating that the password setting operation is stopped is received from the key input unit 16, the display indicating the password setting state is immediately removed and waits for another key input.

However, if there is an input for changing the password from the key input unit 16 in step 32, the microcomputer 14 requests the password input currently set in step 34. When the password is input from the key input unit 16 in step 34, the micom 14 compares whether the input password matches a previously set password in step 36. If the comparison result in step 36 matches, the microcomputer 14 proceeds to step 28 and checks whether the new password is correctly set. In addition, the microcomputer 14 sets a prohibition of recording and reproducing to prevent other users from recording and reproducing the corresponding image data in step 38. Record in the appropriate part of the format structure. However, if the values do not match as a result of the password comparison in step 36, a warning message indicating that the passwords do not match is displayed for the protection of the tape, and then all operations are stopped and a new key is waited for.

However, if there is no information f1h about the password as a result of searching the stored contents of the MIC 10 in step 26, the microcomputer 14 proceeds to step 28 to set a password to receive a new password. If it is not yet displayed and a new password is inputted, it is required to input the same data once again to confirm that the inputted password data is authentic. In addition, if the values of the microcomputer 14 coincide with each other, the recording and reproducing prohibition is set to prohibit recording or reproducing of the image data stored in the MIC 10 in step 38. The recorded password value to the MIC. The recording position of the password is as shown in FIG.

The foregoing relates to a series of operations for recording password data on the tape 12, and a method of using the password data in a tape recording or reproducing apparatus is as follows.

5 shows a method of using a password during playback.

The recording of the image data on the MIC 10 of the tape 12 can be described in the same order as in the case of reproduction, and therefore only the case where the image data is reproduced will be described here.

The microcomputer 14 detects whether a playback key is input from the key input unit 16 in step 42 of FIG. 5, and if the playback key is detected in step 42, the microcomputer 14 performs a third memory type in step 44. The contents of the MIC 10 are searched to find out whether password information is recorded. The microcomputer 14 determines whether a password is set in the MIC 10 in step 46. If the password is not set, the microcomputer 14 proceeds to step 56 to perform an image data reproducing function. However, if there is data f1h indicating password information, the microcomputer 14 proceeds to step 48 to check how the reproduction (pb) bit of the second byte (pc1) is set in the data format of the MIC 10. . If the reproduction (pb) bit is recorded as 0, the reproduction operation is permitted and the reproduction of the image data on the tape is started. If the value of the playback bit (pb) is recorded as 1, the playback is in a prohibition state, and a screen requesting the input of a password is displayed and the input is awaited. If it is determined in step 50 that the prohibition of reproduction is not set, the microcomputer 14 performs the reproduction function in step 56. If the prohibition of reproduction is set, the microcomputer 14 proceeds to step 52 and requests a password input. If a password is input through the key input unit 16, the microcomputer 14 determines whether the input password matches the previously set password value in step 54. If the values do not match, a warning message is displayed and then the playback operation is stopped. If the values do not match, the playback proceeds to step 56 to perform the image data playback operation. However, after the playback key is pressed, the microcomputer 14 searches for the contents recorded in the MIC 10 in step 44, and if there is no f1h which is information on the password, the micom 14 regards the general tape and the MIC (step 56). The reproduction of the image data based on 10) is started.

As described above, the present invention prevents the possibility that a user may accidentally damage the contents of the tape by an operation such as recording, or prevents the user from playing back the tape to another user. This can be useful if you want to. In addition, since the above function is a method of recording a password on the tape, there is an effect that several users can individually manage their tapes simultaneously.

Claims (6)

A device for recording a password in a cassette tape having a memory, the password setting key being input, means for indicating that the password is set, determining whether there is a previously set password, and storing the existing password in the memory of the cassette tape. Means for storing in the memory when a password is input, and for storing a new password if the existing password is set in the memory of the cassette tape when the password is not set. Device for managing a tape using a password, characterized in that configured. The tape managing apparatus according to claim 1, further comprising means for displaying a warning message indicating that a password is already set when an existing password is set in the memory of the tape. The tape according to claim 1, further comprising means for receiving an existing password and confirming whether it is the same as the password stored in the memory when the existing password is set in the memory of the tape. Management device. The tape managing apparatus according to claim 1, further comprising means for setting a prohibition setting to prevent playback or recording of the tape when a new password is input. An apparatus for reproducing image data stored on a tape having a memory in a digital VCR having a key input section having recording and rekeying, comprising: means for retrieving whether a password is set in a memory of the tape when the reproducing key is input; Means for determining whether reproduction prohibition is set when the password is set, and reproducing the image data when a password inputted by requesting a password if the reproduction prohibition is set matches the password stored in the memory; A device for managing a tape using a password, characterized in that it is configured as a means. 6. The apparatus of claim 5, wherein the image data is reproduced when the reproduction key is input when a password is not set.