JPH11162151A - Magnetic recording / reproducing device - Google Patents

Abstract

(57) [Summary] [Problem] The additional information stored and managed by the additional information management unit is divided in units of cassettes in advance and the capacity is determined.
The number of pieces of additional information that can be stored in the additional information management unit for each cassette is limited, and there has been a problem that it is not possible to store more than that capacity. In a table management unit, a link number is set for each cassette and the order of additional information for each cassette is managed, so that the additional information can be stored in the order in which the additional information is generated in the additional information management unit. In addition, additional information can be efficiently managed with a small storage area.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a magnetic recording / reproducing apparatus which stores information related to video and audio signals recorded on a plurality of cassettes and can search for each cassette number.

[0002]

2. Description of the Related Art Conventionally, numbers are assigned to cassettes, and cassette numbers and their program information are recorded in storage means during recording.
There is a magnetic recording / reproducing device capable of displaying and retrieving cassette program information on a screen in response to a user's request, and this is generally called a table of contents function.

Conventionally, a cassette number and information such as recording date and time and title of a video / audio signal (hereinafter referred to as program information) are recorded in the same storage means, and the area is divided by the maximum cassette number which can be recorded in advance. Then, the program information is stored in each divided area.

A conventional program information recording / reproducing operation will be described with reference to the drawings. FIG. 3 is a block diagram of a conventional magnetic recording / reproducing apparatus having a table of contents function, and shows a configuration capable of managing program information. FIG. 4 is a memory map showing a storage state of an additional information management unit in a conventional magnetic recording / reproducing apparatus. In FIG. 3, reference numeral 25 denotes a video / audio input unit to which a video / audio signal is input; 26, an additional information generating unit which generates additional information (recording date and time, title, etc.) relating to the video / audio signal input from the video / audio input unit 25; Reference numeral 24 denotes an additional information management unit that stores the additional information from the additional information generation unit 26 in units of cassettes. The storage state of the additional information management unit 24 is such that a fixed storage area and storage capacity are set for each cassette as shown in the memory map of FIG. ing. Reference numeral 21 denotes a recording / reproducing unit which records and reproduces a video / audio signal from the video / audio input unit 25 and a cassette number signal from a cassette number generating unit 22, which will be described later, on a tape mounted in the cassette. Reference numeral 22 denotes a cassette number generation unit that generates a cassette number corresponding to the additional information stored in the additional information management unit 24 under the control of the additional information management unit 24; A cassette number detecting section 27 for detecting the cassette number detected is a display section for reading additional information corresponding to the cassette number detected by the cassette number detecting section 23 from the additional information managing section 24 and displaying the read information on the screen.

The operation of the conventional magnetic recording / reproducing apparatus configured as described above will be described below.

First, the operation at the time of recording a video / audio signal will be described. The video / audio signal input to the video / audio input unit 25 is input to the recording / reproducing unit 21. Further, additional information such as a recording date and time and a title of the input video / audio signal is generated by the additional information generator 26. The additional information is input to the additional information management unit 24 and stored. Additional information management unit 2
Reference numeral 4 outputs a control signal to the cassette number generation unit 22, and the cassette number generation unit 22 generates a number corresponding to the cassette to be recorded as a cassette number based on the control signal. The cassette number is recorded on the tape by the recording / reproducing unit 21 together with the video and audio signals.

Next, the operation at the time of reproduction will be described. At the same time as the video / audio signal is reproduced by the recording / reproducing unit 21, the cassette number detecting unit 23 detects the cassette number of the tape being reproduced. The video and audio signals are input to the display unit 27 and displayed on a screen. The cassette number detected by the cassette number detection unit 23 is input to the additional information management unit 24, and the additional information corresponding to the cassette number is read from the additional information stored in the additional information management unit 24. The read additional information is output to the display unit 27, and can be displayed on the screen based on the display command.

[0008]

However, in the above-mentioned conventional configuration, the additional information stored and managed by the additional information management unit 24 is divided into cassette units in advance as shown in FIG. There is a problem that the number of pieces of additional information corresponding to one cassette is limited, and that the additional information cannot be stored more than the capacity. In addition, when there is little additional information to be stored per cassette, there is a problem that an empty area is created in the storage area for each cassette, so that the storage area is wasted.

The present invention solves the above-mentioned problem. The additional information management unit does not store the information separately for each cassette, but stores the additional information in the recording order and manages each cassette using link information. Therefore, an object of the present invention is to provide a magnetic recording / reproducing apparatus capable of efficiently performing storage management in an additional information management unit.

[0010]

To solve the above problems, a magnetic recording / reproducing apparatus according to the present invention comprises a recording / reproducing means for recording / reproducing a video / audio signal or a cassette number signal, and a video / audio signal for recording / reproducing by the recording / reproducing means. Additional information management means for storing additional information related to the signal in the storage order of the video and audio signals, cassette number generation means for generating a cassette number signal to be recorded by the recording / reproduction means, and cassette number signal reproduced by the recording / reproduction means Cassette number detecting means for detecting the cassette number, cassette number management means for converting the cassette number from the cassette number generating means and the cassette number detecting means into numerical information,
A table management means for managing a link state between the numerical information converted by the cassette number management means and the additional information stored in the additional information management means.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention provides a recording / reproducing means for recording / reproducing a video / audio signal and a cassette number signal, and additional information relating to the video / audio signal recorded by the recording / reproducing means. Additional information management means for storing the video and audio signals in the storage order; cassette number generation means for generating a cassette number signal to be recorded by the recording and reproduction means; and cassette number detection means for detecting the cassette number signal reproduced by the recording and reproduction means A cassette number management means for converting the cassette number from the cassette number generation means and the cassette number detection means into numerical information; and a numerical information converted by the cassette number management means and the additional information stored in the additional information management means. A table management means for managing the link state, whereby the cassette designated by the cassette number generation unit at the time of signal recording is provided. Port number is managed by the cassette number management unit, at the time of signal reproduction cassette number detected by the cassette number detecting section is outputted from the cassette number management unit to the table management unit. The additional information management unit stores only the additional information as long as the storage area permits, and the table management unit manages the actual arrangement of the program information as link information. By separating the information of the cassette alone from the individual additional information and controlling the arrangement of the information by the table management unit, it is possible to manage the additional information without being affected by the number of cassettes and to influence the number of additional information. It is possible to manage the largest cassette without being performed.

An embodiment of the present invention will be described below with reference to the drawings. (Embodiment 1) FIG. 1 is a block diagram of a magnetic recording / reproducing apparatus having a table of contents function according to the present embodiment, and FIG. 2 is a schematic diagram showing a link state between a cassette number and additional information in the embodiment. . In FIG. 1, reference numeral 7 denotes a video / audio input unit to which a video / audio signal is input, 8 denotes an additional information generation unit which generates additional information (recording date, title, etc.) relating to the video / audio signal input from the video / audio input unit 7 Reference numeral 4 denotes an additional information management unit which is an additional information management means for storing the additional information from the additional information generation unit 8 in the recording order in the recording / reproducing unit 1; 1 denotes a video / audio from the video / audio input unit 7 on a tape mounted in a cassette; The recording / reproducing unit is a recording / reproducing unit that records and reproduces a signal and a cassette number signal from a cassette number generating unit 2 described later. Reference numeral 2 denotes a cassette number generation unit which is a cassette number generation unit for generating a cassette number corresponding to the additional information stored in the additional information management unit 4, and 3 denotes a cassette number recorded on a tape at the time of reproduction by the recording / reproduction unit 1. A cassette number detecting section 9 serving as a cassette number detecting means for detecting can display the video / audio signal reproduced by the recording / reproducing section 1 and also displays additional information corresponding to the cassette number detected by the cassette number detecting section 3. A display unit that reads out from the additional information management unit 4 and displays the screen. In the present embodiment, a television receiver is used. Reference numeral 5 denotes a cassette number management unit which is a cassette number management means for converting the cassette number from the cassette number generation unit 2 and the cassette number detection unit 3 into numerical information. 6 denotes a cassette based on the numerical information from the cassette number management unit 5. The table management unit is a table management unit that manages link information of each additional information.

The operation of the magnetic recording / reproducing apparatus of the present embodiment configured as described above will be described below.

First, the operation at the time of recording a video / audio signal will be described. The video / audio signal input to the video / audio input unit 7 is input to the recording / reproducing unit 1 and recorded on a tape as a recording medium. Further, additional information such as a recording date and time and a title of the video / audio signal input to the video / audio input unit 7 is generated by the additional information generation unit 8. The additional information is input to the additional information management unit 4 and stored. On the other hand, at the same time when the video / audio signal is output from the video / audio input unit 7 to the recording / reproducing unit 1, a control signal is output to the cassette number generation unit 2. The cassette number generator 2 generates a number corresponding to the cassette to be recorded as a cassette number based on the control signal. The cassette number is recorded on a tape together with the video / audio signal by the recording / reproducing section 1 and the cassette number managing section 5
Output to The cassette number output to the cassette number management unit 5 is converted into numerical information and output to the table management unit 6. The table management unit 6 creates link information between the numerical information (cassette number) and the additional information in the additional information management unit 4 based on the numerical information from the cassette management unit 5.

Next, the operation at the time of reproduction will be described. At the same time as the video / audio signal is reproduced by the recording / reproducing section 1, the cassette number detecting section 3 detects the cassette number of the tape being reproduced. The video and audio signals are input to the display unit 9 and displayed on a screen. The cassette number detected by the cassette number detection unit 3 is input to the cassette number management unit 5, is compared with the cassette number stored in the cassette number management unit 5, and is converted into link information by the table management unit 6. Based on the link information, additional information for each cassette managed by the additional information management unit 4 can be extracted and displayed on the display unit 9.

The operation from the control of the cassette number management unit 5 to the control of the additional information management unit 4 via the table management unit 6 will be described with reference to FIG. In FIG.
31 is a cassette number table set by the cassette number management unit 5, 32 is link information converted from the cassette number table 31 by the table management unit 6, and 33 is an additional information management unit 4 based on the link state of the link information 32. It is an additional information table to be managed.

As an example, an operation when four programs are continuously recorded on the cassette A will be described. First, when recording the first program, the additional information generated by the additional information generator 8 is stored as “additional information A1” in the storage area of “table number 1” in the additional information manager 4. At this time,
The cassette number "cassette A" is set by the cassette number generation unit 2 according to the control signal output from the video / audio input unit 1, is output to the cassette number management unit 5, and the recording / reproducing unit 1 sends the tape together with the video / audio signal to the tape. Be recorded. The cassette management unit 5 converts the information of the cassette number into numerical information “1”.
And outputs the result to the table management unit 6, and the table management unit 6 temporarily sets the area of the link number “1” corresponding to the numerical information “1” to the end of the cassette A.

Next, when the second program is recorded following the cassette A, the additional information generated by the additional information generator 8 is stored in the storage area of “information number 2” in the additional information manager 4 as “additional information”. A2 ". At this time, the cassette number generation unit 2 sets the cassette number “Cassette A” according to the control signal output from the video / audio input unit 1 and outputs the cassette number to the cassette number management unit 5. The information is converted into information “1” and output to the table management unit 6. In the table management unit 6, the numerical information "1"
Has already been used, the link number “1” is changed from the link number “1” to “2”.
Is converted to a link number “1-2” for controlling to link to “1”. Then, the link number “2” is terminated at this time, so that the area of the table number “2”, that is, “additional information A2” is terminated at the cassette A. Thus, in the link information 32, the link numbers “1” and “2” are linked, and thus “additional information A1” and “additional information A2” are linked in the additional information table 33.

Next, when the cassette tape is switched from the cassette A to the cassette B for recording, first, when the first program in the cassette B is recorded, the additional information generated by the additional information generator 8 is stored in the additional information manager. 4 is stored as “additional information B1” in the storage area of “table number 3”. At this time, the control signal output from the video / audio input unit 1 recognizes that the cassette has been replaced, and sets the cassette number “Cassette B” in the cassette number generation unit 2 and outputs the cassette number to the cassette number management unit 5. At the same time, the data is recorded on a tape by the recording / reproducing unit 1 together with the video and audio signals.
The cassette management unit 5 converts the information of the cassette number into numerical information “3” and outputs it to the table management unit 6. The table management unit 6 stores the area of the link number “3” corresponding to the numerical information “3”. , The end of the cassette B.

Next, when recording on the cassette A again, the additional information generated by the additional information generator 8 is stored in the additional information manager 4.
Is stored as “additional information A3” in the storage area of “table number 4”. At this time, the control signal output from the video / audio input unit 1 recognizes that the cassette has been replaced, and sets the cassette number “Cassette A” in the cassette number generation unit 2 and outputs it to the cassette number management unit 5. At the same time, the data is recorded on a tape by the recording / reproducing unit 1 together with the video and audio signals. The cassette management unit 5 converts the information of the cassette number A into numerical information “1” and converts the information into a table management unit 6.
However, since “1-2” is set for the link number “1” in the table management unit 6 as described above, an attempt is made to store the link number “2”. However, since the link number “2” is already used and terminated, the link number “2” is changed to the link number “2-” from “2” to “4”.
4 ". Then, since the link number “4” is a free area, the link number “4” ends this time. Thus, the area of the table number “4” corresponding to the link number “4” becomes the end of the cassette B.

Thereafter, when a program is similarly recorded, the additional information management unit 4 stores the additional information in the order of recording. However, the table management unit 6 sets a link number for each cassette, and The order of the additional information for each cassette is managed.

Next, the operation at the time of reproduction will be described. The cassette number of the cassette reproduced by the recording / reproducing unit 1 is detected by the cassette number detecting unit 3 and is output to the cassette number managing unit 5. The cassette number management unit 5 converts the detected cassette number into numerical information, outputs it to the table management unit 6 to obtain link information, and the additional information management unit 4 extracts and displays the additional information based on the link information. Displayed in the unit 9. Hereinafter, the above operation will be described in detail.

For example, assume that the cassette number of the cassette reproduced by the recording / reproducing unit 1 is "cassette A". The cassette number detecting section 3 detects this cassette number and outputs it to the cassette number managing section 5. The cassette number management unit 5
The detected cassette number “cassette A” is converted into numerical information “1” and output. The table management unit 6 detects link information from the numerical information “1”. When the information is recorded based on the above-described recording operation, the link information of the numerical information “1” is “1” − “2” − “4”. Output to The additional information management unit 4 detects the order of the additional information based on the link information. In this example, the additional information “A1” −
The order is "A2"-"A3", and the images are displayed on the display unit 9 in this order.

As described above, according to the present embodiment, the table management unit 6 sets the link number for each cassette and manages the order of the additional information for each cassette. The additional information can be stored in the order in which they were generated.

[0025]

As described above, according to the present invention, since the link number is set for each cassette in the table management unit and the order of the additional information for each cassette is managed, the additional information management unit stores the additional information. Since the information can be stored in the order of occurrence, an excellent effect that the additional information can be efficiently managed in a small storage area can be obtained.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a magnetic recording / reproducing apparatus according to an embodiment of the present invention.

FIG. 2 is a schematic diagram showing a configuration of a cassette number and link information in the embodiment.

FIG. 3 is a block diagram showing a configuration of a conventional magnetic recording / reproducing apparatus.

FIG. 4 is a schematic diagram showing a configuration of a cassette number and link information in a conventional magnetic recording / reproducing apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Recording / playback part 2 Cassette number generation part 3 Cassette number detection part 4 Additional information management part 5 Cassette number management part 6 Table management part

Claims (1)

[Claims] 1. A recording / reproducing means for recording / reproducing a video / audio signal or a cassette number signal, and an additional information managing means for storing additional information related to a video / audio signal to be recorded by the recording / reproducing means in a storage order of the video / audio signal. Cassette number generating means for generating a cassette number signal to be recorded by the recording / reproducing means; cassette number detecting means for detecting a cassette number signal reproduced by the recording / reproducing means; the cassette number generating means and the cassette Cassette number management means for converting the cassette number from the number detection means into numerical information, and a table for managing a link state between the numerical information converted by the cassette number management means and the additional information stored in the additional information management means A magnetic recording / reproducing apparatus comprising a management unit.