JPS6182353A - Recording and reproducing device utilizing computer - Google Patents

Abstract

PURPOSE:To attain sure head location of a recording tape at high speed by using continuous voice of a prescribed length and a prescribed frequency recorded before the voice offered to the user. CONSTITUTION:A study program is progressed according to the content of a recording tape after loading a program A0 to a host computer 1. Then a drive control section 4' is operated based on the result of calculation of a block to be skipped by a main control section 3 according to the control instruction from the computer 1 and a drive section 5 feeds fast the tape. After a signal voice detection circuit 11 uses a non-sound detection circuit 8' to skip a prescribed block number and when a signal voice part is detected from the output of a reproducing circuit 7 while the tape is run with the fast feed mode, the drive section 5 is switched into the reproducing mode. As a result, the data corresponding to the recording voice of a prescribed block of the tape is reproduced, the data is given to the student and the computer 1 respectively and the study program is proceeded similarly.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a computer-based recording and reproducing apparatus that is controlled by a small-sized computer generally referred to as a personal computer and that reproduces a recording tape used for learning or the like.

A computer-based recording and playback device is a new computer-based system that uses a tape recorder such as a cassette type as an "audiovisual media.9" For example, it is controlled by a general-purpose personal computer, which has become widespread these days, as a host computer, and is controlled by a general-purpose personal computer that has recently become widespread. Using a display device connected to
This is a device configured to be used for English conversation, music, abacus, and other purposes such as play or learning for young children or students.

"Computer-based recordings used for learning": In the device, learning is performed in a step-by-step manner, for example, in the form of questions, and the learner answers the voice questions by pressing an answer button,
Many have a system in which the answer results are checked using a computer.

The audio questions are recorded on audio tapes for each problem in blocks, and the data used to check whether the learner's answers are correct is also recorded on the same audio tapes for each block, but learning efficiency In order to improve this, a two-track recording tape is used.The first track contains the computer program and the data to be input into the host computer for checking, and the second track contains the computer program and the data to be input into the host computer for checking. The audio presented to the learners is recorded for each block.

Such computer-based recording and playback devices for learning use controls such as skipping to earlier questions or backtracking to later questions depending on the learner's answers (generally referred to as cueing).
However, in such cases, some kind of identification is provided between the blocks in which the two problems and the data corresponding to each problem are recorded to facilitate cueing. ing.

By the way, the above-mentioned identification detection is normally performed while the recording tape is running in fast forward mode 1', but by simplifying each component including the detection circuit as much as possible, reliability can be increased and costs can be reduced. It is important to aim for down.

[Conventional technology]

Figure 2 (al) shows a configuration diagram of a conventional example of a computer-based recording and playback device used for learning;
a receiving unit that receives control instructions given from the receiver;

3 is a main control unit that analyzes the control command received by the reception unit 2 and generates a control signal for the drive control unit 4, which will be described later;
Reference numeral 4 denotes a drive control section that controls the drive section 5 described later based on a control signal given from the main control section 3.

5 is a drive unit that drives the recording tape, 6 is a recording/playback head, 7 is a two-channel playback circuit that plays back the recorded contents of the recording tape, and 8 is a first track from the playback signal obtained by the playback circuit 7. a silent part detection circuit for detecting a silent part provided between the blocks of the second track and a silent part provided between the blocks of the second track; 9 an amplifier for amplifying the audio signal of the second track reproduced by the reproduction circuit 7; Also, 10 is hesodophone.

Fig. 2(b) shows an example of the configuration of the recording tape used. The upper row is the first track for recording the computer program ^0 and block-by-block data Δ1, A2, etc., and the lower row is the track used. Voices Bo-Bl・B2・・Bn・
・A second track that stores . Audio B1, B2...B for each block recorded on the track
This is a silent part provided before n....

With the above configuration, by first loading a recording tape and operating a console (not shown) provided in the host computer 1, the computer program 80 recorded at the beginning of the first track of the recording tape can be read. The data is read by the recording/playback head 6 and loaded into the host computer 1 via the playback circuit 7.

During this time, the Pasok Grant' music recorded in part 80 of the second track is read.

It is played to the learner through headphones 10.

When the loading of the computer program screen is completed in this way, a display device (not shown) connected to the host computer 1 will display a message such as "Now, let's start learning. When you are ready, press the execution button on the deck. Please.” is displayed.

When the learner presses the instructed execution button, a chime is heard, followed by a chime, which is recorded in 81 of the first track.
YIESI) If you think there is a mistake, please press (No!'). ....... ” is transmitted to the learner through the headphones 10.

At this time, the data recorded on the elbow of the first track is simultaneously played back by the playback circuit 7 and sent to the first track computer 1. A1 stores data used to check the learner's answers, as well as data such as blocks that record the next question depending on whether the answer is correct or not. Based on this data, the higher-level computer For example, if l is 1,
Skip to the jth block of the first track. ”, the main control unit 3 calculates the number of blocks to be skipped, sends a control signal based on the calculation result to the drive control unit 4, and the drive control unit 4 controls the drive unit 5. then switch the recording tape to fast forward mode and run it.

The silent portion detection circuit 8 detects a reproduction signal from the reproduction circuit 7 obtained while the recording tape is running in fast forward mode.

The silent portion a provided on the first track and the silent portion a provided on the second track are respectively detected, and a detection signal is sent to the drive control unit 4 each time. Further, the drive control section 4 is activated when the number of times the silent section detection circuit 8 detects the silent section a of the first track and sends out a detection signal matches the number of skips given by the control signal of the main control section 3. The running mode of section 5 is switched from fast forward mode to playback mode.

In this way, the recording tape is recorded in the first l rank j
The data recorded in this block and the audio recorded in the corresponding block of the second track are given to the host computer 1 and the user, respectively. Learning program progresses.

[Problem that the invention seeks to solve]

The duration of the silent section a or b provided on the recording tape is generally about 6 seconds in play mode, but in fast forward mode it varies depending on the amount of tape on the take-up reel or the feed reel of the recording tape, for example 1. It will be around seconds.

Further, the time required for the drive section 5 to shift from the fast forward mode 1- to the playback mode under the control of the drive control section 4 also varies depending on the amount of tape on the winding side reel or the feeding side reel of the recording tape.

On the other hand, it takes a certain amount of time for the silent part detection circuit 8 to detect each silent part a or b.

Therefore, in order to prevent the recording tape from overrunning when the drive mode of the drive unit 5 is switched from fast forward mode to playback mode under the control of the drive control unit 4, the structure of the drive control unit 4 or the drive unit 5 must be The problem is that it is complicated and expensive.

Alternatively, the audio for each block B1, B2...Bn...
・If there is a silent part in the recording tape, there is a risk that it will be mistakenly detected as a silent part for block identification, so it is necessary to provide a silent part for block identification over a certain length. There is also the problem that the time becomes longer and learning efficiency decreases.

[Means for solving problems]

The present invention consists of a first track and a second track, and the first track records a computer program and data input to its host computer in blocks separated by silent parts, and the second track records the data to be input to the host computer. Under the control of a host computer, the audio to be presented to the audience is recorded in blocks separated by a silent part and a signal audio part immediately before the audio signal using a recording tape? +1 in a computer-based recording and playback device.

A signal sound detection circuit that detects a signal sound recorded in a signal sound section of a second track from a playback signal obtained by playing back the recording tape, and a filter that erases the signal sound in the playback signal. This is an attempt to solve the above problem.

[Effect]

In other words, in the present invention, a signal sound detection circuit is provided, and a recording tape is provided with a signal sound section in which continuous sound of a certain frequency for a certain period of time is recorded before the sound to be presented to the user. It is possible to ensure cueing.

〔Example〕

The gist of the present invention will be specifically explained below with reference to an embodiment shown in FIG.

FIG. 1 (al is a block diagram of one embodiment of the present invention.

In the figure, the same symbols as those in the conventional example shown in FIG. and a detection signal obtained by the signal/audio detection circuit 1) described later.

A drive control unit that controls a drive unit 5 (described later) using a control signal given from the main control unit 3, and 8° detects a silent portion provided between blocks of the first track from a reproduction signal reproduced by a reproduction circuit 7. The silent part detection circuit 1) detects a continuous sound of 501)z, which has been recorded for a certain period of time before the user presentation sound of the second track, from the playback signal played by the playback circuit 7. circuit,
Further, 12 is a high-pass filter (HPF) that passes the reproduction signal of the second track reproduced by the reproduction circuit 7 at frequencies of 100 Hz or more.

In addition, the same symbols as in Fig. 1 (bl is an example of the configuration of the recording tape used and fb in Fig. 2) refer to the same objects.
S is audio B1 for each block recorded on the second track
・B2...Bn... This is a signal audio section that records the continuous audio of 501)z.

With the above configuration, in the same way as the conventional example,
After the calculation program Ao is first loaded into the host computer 1, the learning program is advanced according to the contents of the audio tape.

Therefore, when the host computer 1 sends a control command to the host computer 2, for example, "Skip up to the j-th block of the second track," the main control unit 3 calculates the number of blocks to be skipped and executes the command based on the calculation result. A control signal is sent to the drive control section 4'.

The drive control section 4'' controls the drive section 5 to switch the running of the recording tape to fast forward mode.

At this time, the signal sound detection circuit 1) is activated by the silent part detection circuit 8'.
After skipping a predetermined number of blocks, from the output of the playback circuit 7 while the recording tape is running in fast forward mode,
When the signal audio section S of the second track of the recording tape is detected, the running mode of the drive section 5 is switched from the fast forward mode to the playback mode. - As a result, the audio recorded in the jth block of the second track of the recording tape and the data recorded in the corresponding block of the first track are played back, respectively, to the learner and the host computer. 1, and the learning program proceeds in the same manner.

According to the above embodiment, since the beginning of the audio is determined by the 50 Hz continuous audio recorded in the signal audio portion of the second track on the recording tape, there is no lack of reproduced audio and there is no sound. Since blocks can be quickly forwarded, the time required for detection can be shortened.

Note that the continuous voice of 50Hz is filtered through a high-pass filter 12.
Therefore, the signal is not input to the amplifier 9 and does not occur to the handphone 10.

〔Effect of the invention〕

As described above, according to the present invention, audio cues can be found at high speed without complicating the configuration of each part.

[Brief explanation of the drawing]

FIG. 1(a) is a block diagram showing the configuration of an embodiment of the present invention. FIG. 1(b) is a diagram showing an example of the configuration of a recording tape used in the same embodiment. FIG. 2 ta+ is a block diagram showing the configuration of a conventional example. FIG. 2 (bl is a diagram showing an example of the configuration of a recording tape used in a conventional example. In the figure, 1 is a host computer, 4 and 9 are drive control units, 7 is a playback circuit, and 81 is a silent portion detection circuit. 1) is a signal sound detection circuit, and 12 is a high-pass filter.

Claims (2)

[Claims] (1) Consisting of a first track and a second track, the first track records the host computer program and the data to be input to the host computer in blocks separated by silent parts, and the second track records the program for the host computer and the data to be input to the host computer in blocks separated by silent parts. is a computer-based recording and playback device that uses a recording tape that records the audio presented to the user in blocks divided by silent parts and signal audio parts immediately before the audio signal, and plays back the recorded contents under the control of a host computer. a signal sound detection circuit for detecting a signal sound recorded in a signal sound section of a second track from a playback signal obtained by playing back the recording tape; and a signal sound detection circuit for erasing the signal sound in the playback signal. A computer-based recording and playback device comprising a filter. (2) The computer-aided recording and reproducing apparatus according to claim (1), wherein the filter is a high-pass filter.