JPH09306146A - Data recorder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily retrieve or call a specific information by recording the information including the recorded time and data on a data part as one block constitution and also including the recorded time in an index part. SOLUTION: When a desired data is retrieved, a button for reproduction on a control panel 7 is pushed from the beginning point of the index part 2 first of all by the user to input the index information (start time of recording and the end time) of the data part to a microcomputer 8 from a reproducing head 15b, and these data are temporarily stored in a RAM 22 by the microcomputer 8. When the reading of the index part 2 is completed, the index information stored in the RAM 22 is displayed on an index display part 23.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data recording device for recording information on a recording medium such as a magnetic tape or a magnetic disk.

[0002]

2. Description of the Related Art A conventional example will be described with reference to FIGS. In FIG. 9, when recording data (voice data or the like), the recording button on the operation panel 7 is pressed, a signal is transmitted to the microcomputer 8, the motor control unit 9 receives a command, the motor 10 rotates, and the audio signal is output. The tape 11 runs. At this time, the microcomputer 8 issues a command to activate the recording amplifier 16a, sends an erasing signal to the erasing head 17, and amplifies the voice input to the microphone 18 to send a voice signal to the recording head 15a to send the audio tape 1
1 is recorded as data.

The tape count display section 20 includes a motor 10
The tape count detection unit 19 attached to the drive unit of the drive counts the movement of the motor 10. Therefore,
The value of the tape counter is an important guide for the audio data recording location on the recording tape.

When the user wants to call out desired audio data, the user presses the fast forward or rewind button on the operation panel 7 with the tape counter value as a guide and operates until the reproducing head comes to the recording place. When the player reaches the desired recording location and presses the play button, a signal is transmitted to the microcomputer 8 and the motor controller 9 is instructed to rotate the motor 4 to run the audio tape. At this time, the microcomputer 8 issues a command to activate the reproducing amplifier 16b, the reproducing head 15b reads the audio data recorded on the audio tape 11, amplifies the audio data, and calls and reproduces desired data.

In the case of FIG. 9, there are three heads and two recording and reproduction amplifiers are independent, whereas in FIG. 10, there are two heads and the recording and reproduction amplifiers are shared. Shows. In FIG. 10, the same operation as described with reference to FIG. 9 can be performed by switching the changeover switch to R (record) or P (play) for recording and reproducing.

[0006]

However, the conventional data recording apparatus has the following problems when it is attempted to record a large number of data on one recording medium. 1) When a random access recording medium such as a flexible disk or a hard disk is used, but a recording medium such as a magnetic tape capable of only sequential access has a poor list of recorded data, and the recorded contents are to be examined. Had to replay all the recorded content to check. 2) In order to call up the desired data even after performing the work of 1) and creating a list of recorded data, press the fast forward or rewind button on the operation panel with the tape counter value as a guide, and the playback head moves to the data recording location. It was necessary to work until it came to Japan. 3) Recording paper is mainly used for the list of recording data created in the work of 1), but it is not easy to change the name of data or remarks. Further, the recording medium and the data list are effective only when they become a pair, but there is a possibility that the list may be lost or the list may be mistakenly used for a different recording medium. 4) When the number of recording media becomes large, when the recording media are replaced, it is sometimes forgotten to reset the tape counter, which is an important guideline for searching, and search becomes impossible. 5) When the reproducing head is brought into contact with the recording medium to perform fast-listening reproduction to retrieve desired data, the reproducing head is easily worn. 6) When continuously searching for data, a person who operates the tape counter value after the search and the position of the next search data must determine whether to perform normal rotation or reverse rotation.

Therefore, an object of the present invention is to provide a data recording device that can easily retrieve and call a location where specific information is recorded.

[0008]

A data recording apparatus of the present invention uses a recording medium by dividing it into an index section and a data section, and records information including a recording time and data in one block in the data section. At the same time, the recording time is included in the index part so that it can be used as a key for data retrieval.

[0009]

A data recording apparatus according to a first aspect of the present invention uses a recording medium by dividing it into an index section and a data section, and records information including a recording time and data in one block in the data section. At the same time, since the recording time is included in the index part so that it can be used as a key at the time of data search, specific information can be easily searched or called by glancing at the information of the index part.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. (Embodiment 1) FIG. 1 is a conceptual diagram of a data recording method in Embodiment 1 of the present invention.

In FIG. 1, an audio cassette tape is shown as an example of the recording medium for the sake of explanation. Other recording media include video tapes, DAT tapes, and the like.

The index portion 2 is provided in the first portion of the recording medium 1 and thereafter the data portion 3 is divided and used.

Since an audio cassette tape is used as an example in FIG. 1, the index portion 2 is formed on the A side and the B side.
However, it is well known that the video tape and the DAT tape have only one side since there is no concept of using both sides.

FIG. 2 is a block diagram of a data recording device according to the first embodiment of the present invention. <Recording method of data in data section> When recording voice data, when the user presses the record button on the operation panel 7, a signal is transmitted to the microcomputer 8 and the motor control section 9 receives a command to turn on the motor 10. The audio tape 11 is rotated, and as a result, the audio tape 11 runs. Then, the microcomputer 8 inputs the recording start time with reference to the timer unit 12, is sent to the recording head 15a via the digital signal amplifier 13a and the A / D mixer 14, and is recorded on the audio tape 11 as the recording start time data 4 Is recorded.

Then, the microcomputer 8 includes a recording amplifier 16a.
Command to activate, the erasing signal is sent to the erasing head 17, the sound input to the microphone 18 is amplified, and the sound signal is sent to the recording head 15a via the A / D mixer 14 11 is recorded (recorded) as voice data.

Further, when the user presses the stop button on the operation panel 7 when the user wants to stop the recording of the audio data, the microcomputer 8 inputs the recording end time from the timer unit 12, and the digital signal amplifier 13a and A / The audio tape 1 is sent to the recording head 15a via the D mixer 14.
Recording end time data 5 is recorded in 1. Then, the microcomputer 8 instructs the motor control unit 9 to stop the motor 10 and the audio tape 11 to stop.

The tape count display section 20 includes a motor 10
The tape count detection unit 19 attached to the drive unit displays the count value interlocked with the movement of the motor 10. The counted tape count signal is sent to the microcomputer 8. Then, it is recorded on the audio tape 11 together with the data recording start time. Utilization of the tape count signal will be described later in the fifth and sixth embodiments. <Recording Method of Index Information> When data is accumulated in the data section to some extent, the index information is recorded in the index section 2. First, the audio tape is pressed from the start point of the data section 3 by pressing the reproduction button of the operation panel 7 to transfer the data information (recording start time and recording end time) of the data section 3 from the reproduction head 15b to the microcomputer via the A / D distributor 21. Only the digital signal is input to 8 and the microcomputer 8
Temporarily stores the data in the RAM 22. After reading all the data part, next time audio tape 1
1 is rewound and the index information stored in the RAM 22 is recorded in the index section. <Data Search Method> When trying to search for desired data, the user first presses the play button on the operation panel 7 from the start point of the index section 2 to play the index information (recording start time and recording end time) of the data section. Head 1
5b is input to the microcomputer 8 via the A / D distributor 21, and the microcomputer 8 temporarily stores the data in the RAM 22. When all the index sections 2 have been read, the index display section 23 displays the index information stored in the RAM 22 on the index display section 23.

When the input device 24 designates the data to be called from the displayed index information, the microcomputer 8 executes fast-forward reproduction using the recording start time as a keyword, and searches for a coincident position. When a match is found,
Switch from fast-forward playback to normal playback and play amplifier 1
When 6b is instructed to start, the called data is reproduced from SP25.

In the case of FIG. 2, there are three heads and two recording and reproducing amplifiers are independent, whereas in FIG. 3, there are two heads and the recording and reproducing amplifiers are shared. Is shown. In the method of FIG. 3, the same operation as described with reference to FIG. 2 can be performed by switching the changeover switch to R (record) or P (play) for recording and reproducing.

(Second Embodiment) FIG. 4A is a conceptual diagram of the index selection function according to the second embodiment of the present invention. As mentioned above, as a method of selecting the desired data after the index information is displayed, display the information of the index part as a list and select from the desired data list to facilitate the input. You can For example, a method in which a touch panel is combined with a liquid crystal panel is considered.

(Third Embodiment) FIG. 4B is a conceptual diagram of the index editing function according to the third embodiment of the present invention. As described above, the search method of the present invention mainly searches using the data recording start time of the data section as a keyword. However, there is no problem even if information such as the data name of each data or the contents of remarks is added to the index information. Therefore, from the basic index configuration of FIG.
As in (b), the data information such as remarks can be arbitrarily added and changed, and the contents of the recorded data can be expressed more clearly.

(Embodiment 4) FIG. 5 is a conceptual diagram of an automatic counter reset function in Embodiment 4 of the present invention. The tape counter is automatically reset by recording a counter reset signal at the end of the index section 2 and reading the head reset signal. This increases the number of recording media (audio tapes, etc.),
Don't forget to reset the tape counter, which is an important guide for searching when swapping.

That is, if the end of the index information is set to the reading of the counter reset data, the position where the index information is read and the search is ready becomes the 0 count position and can be used as the reference point of the tape position. The beneficial use of this function will be described later in the fifth and sixth embodiments.

(Fifth Embodiment) FIG. 6 is a flow chart of a synchronous search in the fifth embodiment of the present invention. When retrieving data, it is necessary to bring the reproducing head into contact with the recording medium and read it for comparison. Therefore, when the position of the data to be searched is far from the current position of the reproducing head, the recording medium is in contact with the reproducing head for a long time, and the reproducing head is easily worn. Therefore, as shown in FIG. 6, by synchronizing the keyword search method based on the data recording time described in the first embodiment and the automatic counter reset function described in FIG. If the distance is far, the reproducing head is moved away from the recording medium based on the tape counter value, rough feeding is performed, and then the reproducing head is brought into contact with the recording medium to perform a search while approaching the target point. Then, wear of the reproducing head can be suppressed.

(Embodiment 6) FIGS. 7A to 7C show
It is operation | movement explanatory drawing of the reverse call in Embodiment 6 of this invention. The state immediately after the data 11 is called and played is shown in FIG. 7A. It is clear that the data 11 can be called continuously in the tape playing direction as shown in FIG. 7B. As shown in FIG. 7C, in the opposite direction to the tape reproducing direction, it is necessary to read the recording time data of the digital signal recorded from the forward direction in the reverse direction to read and judge.

However, the judgment requires complicated operations such as data rearrangement and reading timing change.

As a countermeasure, the synchronous search of the fifth embodiment is diverted to determine whether the calling data is in the forward direction or the backward direction with respect to the current position, and the calling data is in the tape reproducing direction. If it is in the reverse direction, it can be dealt with by reversing the calling target point by a larger amount by the overlap amount, temporarily stopping, and then searching in the forward direction.

[0028]

According to the data recording apparatus of the present invention, the recording medium is divided into an index section and a data section, and the data section records the information including the recording time and the data as one block structure. Since the recording time is included in the so that it can be used as a key when searching for data, 1
Data desired to be used can be easily retrieved and retrieved from a plurality of data recorded in one recording medium (magnetic tape which cannot be accessed randomly).

[Brief description of drawings]

FIG. 1 is a conceptual diagram of a data recording method according to a first embodiment of the present invention.

FIG. 2 is a block diagram of a data recording device according to the first embodiment of the present invention.

FIG. 3 is a block diagram of a data recording device according to the first embodiment of the present invention.

4A is a conceptual diagram of an index selection function according to the second embodiment of the present invention. FIG. 4B is a conceptual diagram of an index editing function according to the third embodiment of the present invention.

FIG. 5 is a conceptual diagram of an automatic counter reset function according to a fourth embodiment of the present invention.

FIG. 6 is a flowchart of a synchronous search according to the fifth embodiment of the present invention.

FIG. 7A is an operation explanatory diagram of reverse rotation calling according to the sixth embodiment of the present invention. FIG. 7B is an operation explanatory diagram of reverse rotation calling according to the sixth embodiment of the present invention. Call operation explanatory diagram

FIG. 8 is a conceptual diagram of a data recording method in a conventional data recording device.

FIG. 9 is a block diagram of a conventional data recording device.

FIG. 10 is a block diagram of a conventional data recording device.

[Explanation of Codes] 1 recording medium 2 index part 3 data part 4 recording start time data 5 recording end time data 6 data

Claims (6)

[Claims] 1. A recording medium is divided into an index section and a data section for use, information including a recording time and data is recorded as one block in the data section, and a key for data retrieval is recorded in the index section. A data recording device, characterized in that the recording time is included so that it can be used as. 2. An index display section for displaying information of the index section as a list, and when desired data is selected from the list, a data recording time is extracted from the list and data is called from the data section. The data recording device according to claim 1, wherein 3. The data recording apparatus according to claim 2, wherein the index section is configured such that information such as a data name and remark contents can be arbitrarily added and changed. 4. The data recording device according to claim 1, wherein a counter reset signal is recorded at the end of the index section. 5. A data recording apparatus according to claim 1, wherein a low-speed precision feed is performed after a relative rough feed to the recording medium. 6. A judgment is made as to whether the recording position of the data to be recalled should be forward or reverse in the recording medium with respect to the current position, and particularly in the case of reverse rotation, after being reversely rotated a lot with respect to the target point, it is then corrected. 2. The data recording device according to claim 1, wherein the data is recorded at a recording time and read to reach a target point.