JPS5834634Y2 - Dictation record playback device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a dictation recording and reproducing apparatus for recording dictated contents on a magnetic tape and for creating documents and the like while reproducing the recorded contents.

In such a dictation recording/reproducing device, an index of recorded contents is often used in order to improve the efficiency of document creation work such as typing.

This index indicates the position in the tape running direction that corresponds to a plurality of different recorded contents on the magnetic tape, and the simplest one is to write the value of a general tape counter on a memo paper, etc. along with the recorded contents. There is something written down.

In recent years, as a dictation recording and reproducing device that saves the trouble of writing an index and further improves usage efficiency, it records the dictation on the first track of the magnetic tape, and at the same time records the dictation on the second track.
A search signal (also called a cue signal) for indexing a track.

) is used.

This dictation recording and reproducing apparatus is provided with an indexing device 101 as shown in FIG.

In this device 101, a pointer 102 moves over the recording paper 103 in response to the running of the magnetic tape, and the pointer 102 moves to the top of the recording paper 103 in response to an operation by a dictator.
EC (Secretary) column 104 and LTR (Le
A mark 106 is printed in the t t er ) field 104 .

However, such a dictation recording/reproducing device requires a printing machine with seven grooves using the pointer 102, making the mechanism complicated and expensive, and making it difficult to miniaturize for portable use.

Further, it is necessary to pass the recording paper 103 along with the recorded magnetic tape from the dictator to the document creator such as a secretary.

Furthermore, the document creator must take the trouble of resetting the indexing device 101 after attaching the recording paper 103 to a predetermined position of the dictation recording/reproducing device (or a device exclusively for reproducing) and rewinding the magnetic tape. Is required.

The present invention eliminates these conventional drawbacks, has a simple mechanical configuration, can be easily miniaturized, can be supplied at low cost, and is easy to operate and work efficiently. The purpose of the present invention is to provide a dictation recording and reproducing device.

Hereinafter, preferred embodiments of the present invention will be described with reference to FIGS. 2 to 6.

First, FIG. 2 is a block diagram schematically showing the main parts of the dictation recording and reproducing apparatus according to the embodiment.

In FIG. 2, a cassette tape 1 has a supply reel 2, a take-up reel 3, and a magnetic tape 4 wound around these reels 2, 3.

The current position of the magnetic tape 4 in the running direction (arrow X direction), that is, the position of the portion currently in contact with the magnetic head 5, can be determined by various methods.
In the tape current position detecting device 6 of this embodiment, the rotation period T8. Tt is detected, and calculations are performed based on these rotation periods Ts and Tt to determine the current position.

This tape current position detection device 6 will be explained first by the rotation center axis I of each of the reels 2 and 3.

8 are provided with rotation detectors 9 and 10, respectively.

The rotation detector 9 generates a rotation detection pulse by magnetically, photoelectrically, or mechanically detecting a mark 12 on a rotating body 11 attached to the rotation center shaft 7 of the reel 2 using a detection element 13. It is.

The other rotation detector 10 also has a similar configuration.

The rotation detection pulses from these rotation detectors 9 and 10 are
Each reel 2,
3 rotation period T5. A data signal of Tt is obtained.

These data signals are sent to calculation circuit 16, where predetermined calculations are performed to obtain data signals indicating the current tape position.

Next, the cue signal detection device 17 for detecting the cue signal recorded on the second track or the like on the magnetic tape 4 will be explained.

The magnetic head 5 is, for example, a two-channel recording/playback head in which two head chips are arranged side by side in the width direction of the magnetic tape 4. One head chip records and plays back dictation, and the other head performs recording and playback. Each chip has the ability to record and play back cue signals.

Such a cue signal from the magnetic head 5 is sent to the cue signal discrimination circuit 18, and the cue signal discrimination circuit 18
For example, a first cue signal and a second cue signal are discriminated and outputted.

These first and second cue signals are each 5EC (S
The SEC corresponds to the LTR (Letter) and the LTR (Letter).
Generally, R is used to indicate the content of the document to be created, but it can also be used for various purposes depending on the agreement between the dictator and the document creator (secretary, etc.).

Note that when recording these two types of cue signals, or even more types of cue signals, on one recording track, the frequency of the signal may be changed, the amplitude may be changed, or the pulse may be recorded. By changing the number, pulse period, pulse width, etc., the type of reproduced cue signal can be easily determined.

Next, the storage circuits 19 and 20 for storing the current tape position and cue signals will be explained.

These memory circuits 19 and 20 each have a memory address corresponding to a tape position in the running direction of the magnetic tape, and the number of these addresses corresponds to the number of tape positions that can be displayed by a display device, which will be described later. Equal to the number of display segments that make up the device.

For example, when using a display device configured by arranging 30 display segments in a row, the 30 addresses from address 1 to address 30 are divided into 30 addresses from the starting end position to the ending end position of the magnetic tape 4. Assign them according to their positions.

First, the first storage circuit 19 temporarily stores data at an address corresponding to the current position of the tape, and sequentially moves the stored contents to the corresponding address as the tape runs.

The second storage circuit 20 stores the presence of the cue signal at an address corresponding to the current tape position when the cue signal is detected.

Reading the memory contents of these memory circuits 19 and 20 is as follows:
For example, the scanning pulse may be used to sequentially scan addresses 1 to 30.

The tape current position signal read from the first memory circuit 19 is sent to the display drive circuit 22 via the blinking circuit 21, and the cue signal read from the second memory circuit 20 is directly driven for display. The signal is sent to circuit 22.

Next, the display device 23 that displays the current tape position and the tape position of the cue signal will be described.

As shown in FIG. 3, this display device 23 is composed of, for example, 30 rectangular display segments 24 arranged in a row, and has a similar structure to a so-called bar graph display device. The display formats are different.

As such a display device 23, an LCD (Liquid
Crystal Display: Liquid crystal display device)
, plasma display (Plasma display)
play), or each segment has an LED (Light
Various types of light emitting diodes (emitting diodes) can be used.

One display segment 24 of this display device 23 corresponds to one memory address of the memory circuit 19, 20, respectively, and can be driven for display independently according to the stored content of the address.

Specifically, display is performed by the segments emitting light in plasma displays and LEDs, and by the segments changing color to a color different from the background color in LCDs, but in the following explanations, it is assumed that the segments are "lit". express.

Here, the basic display form that is clear from the above configuration is that the display segment indicating the current tape position flashes dynamically, and the display segment indicating the cue position remains lit statically, so the displays are visually different from each other. This allows two different types of data to be displayed on one display device 23.

Furthermore, the display device 23 is provided with an SEC display element 25s and an LTR display element 25L for displaying the type of cue signal. When displaying the position, each of the LTR display elements 25L is driven to light up.

That is, one display device 23 can display both SEC and LTR.
To display the cue position of the type, use the display toggle switch (
(not shown), etc., and the type of cue signal at that time is displayed on the display elements 25s and 25L.

Alternatively, two display devices may be used, one displaying the SEC queue position and the other displaying the LTR queue position.

By the way, the above tape current position display may overlap with the cue position display because the display position of the segment moves as the tape runs, and in this case, the current tape position display may overlap with the cue position display, and in this case, the current tape position display may be dynamic (blinking) or static (lighting only) in the segment. ) only one display is performed.

For this reason, a coincidence circuit 26 is provided to detect coincidence between the current tape position and the cue position, and the detection output from this minus number circuit 26 is sent to the display element 25 via a blinking circuit 27.
It is preferable to clarify the overlap between the tape current position indication and the cue position indication by sending the tape to the current position indication.

Next, some specific examples of display formats will be explained with reference to FIGS. 4 to 6.

In these figures, lighting parts are shown by diagonal lines, and blinking parts are shown by diagonal broken lines.

First, in FIG. 4, one display device 23 displays SEC and L.
An example of switching and displaying the TR queue position is shown.

FIGS. 4A to 4C are display examples during recording, and the current tape position is displayed by blinking the corresponding segment.

Figure 4A shows the display when recording starts from the beginning of the magnetic tape, and the tape current position T, which is blinking, changes to display segment 2 as the magnetic tape runs.
4. Move in the direction of the arrow.

During recording, if the dictator operates a cue button (not shown) or the like and records, for example, an LTR cue signal on the magnetic tape, the cue signal will be recorded at the memory address of the memory circuit 20 corresponding to the tape position at this time. As the LTR memory is written, the display segment of the tape position in question on the display device 23 lights up, and the cue position L1 of the LTR etc. is statically displayed as shown in FIG. 4B.

The same applies to the SEC cue signal, and if the SEC display is made by operating the display changeover switch, the SEC cue position 81 etc. will be lit and displayed as shown in FIG. 4C.

Next, the dictator hands the magnetic tape on which the cue signal and dictation contents have been recorded in this way to a document creator such as a secretary, without rewinding it.

A secretary or the like attaches this magnetic tape as is to a dictation recording/reproducing device.

At this time, all display segments of the display device 23 are, for example, in a lit state.

When the rewinding operation is started, the current position of the tape is detected and the corresponding position T of the display segment 24 is displayed blinking as shown in the fourth diagram.

This tape current position T moves in the direction of the arrow in the fourth diagram, and after the movement, the display segment 24 goes out as shown in FIG. 4E.

This can be easily realized by writing a static memory that can be saved into the memory circuit 20 or the like at a memory address corresponding to the detected current position of the tape.

According to this kind of display (hereinafter referred to as scan display),
It becomes clear to distinguish between used and unused parts on the magnetic tape, which can contribute to improving the efficiency of document creation work.

Incidentally, at the time of rewinding, a cue signal is also detected, and the cue signal is discriminated into SEC and LTR and stored in the storage circuit 20 or the like.

Therefore, even in the part that is turned off by the scan display, the display segment at the tape position where the cue signal is detected remains lit.For example, in the case of LTR display, as shown in FIG. L3. L
2nd prize will be displayed lit.

In addition, when the tape is running at high speed and the tape current position display changes rapidly, as in the case of rewinding, the fourth diagram and E
It is not necessary to display the current tape position T in a blinking manner as shown in FIG. 2, but it may be displayed only in a dark state or only in a light state within a range that can be distinguished from the display of other display segments.

Next, FIG. 4F shows an example of a display when playback starts from the beginning of the tape after the rewinding operation is completed.
Since the cue position display has been changed to 1., the cue position 1. L2. L3 is displayed lit.

Also, the current tape position T is the fourth position as the tape runs.
Move in the direction of the arrow in Figure F.

When playback is performed in this way and the current tape position T reaches the cue position L1 as shown in FIG. to clearly indicate that the current tape position is at the cue position.

Thereafter, as the tape runs, the display of the current tape position T moves in the direction of the arrow, as shown in FIG. 4H, for example, and when it reaches the boundary of the scan display as shown in FIG. For example, the illuminated portion and unlit portion of the scan display may be reversed.

This is the rewind start position mentioned above, that is, in the normal case,
This makes it possible to clearly display the final position where the dictator actually recorded, which helps improve the efficiency of document creation work.

The above is an example of a case where SEC and LTR queue positions are switched and displayed, and the description has mainly been given to the LTR queue position display, but since the same applies to the SEC queue position display, the explanation will be omitted.

Next, Figure 5: Using two display devices 238.
An example is shown in which the LTR queue position and the scan are displayed on the other hand.

That is, in the display example shown in FIG. 5, the display device 23s lights up the SEC cue positions S1, 82, etc., and displays the current tape position T in a blinking manner.
L, the part scanned by rewinding or the like is displayed by lighting up, and the LTR cue position L1. L2 etc. are displayed as off.

This scan display turns off the scanned part as shown in FIG. 6, and the cue position is 0. L2 etc. may be displayed by lighting.

In addition, the display formats of lighting and turning off can be made interchangeable as desired.

Next, FIG. 7 is a block diagram schematically showing the main parts of a dictation recording and reproducing apparatus using a general-purpose program-controlled microprocessor 30 as another embodiment of the present invention.

The tape current position detecting device 6 and cue signal detecting device 17 of the dictation recording and reproducing apparatus shown in FIG. 7 are the same as the embodiment shown in FIG. omitted.

Here, the microprocessor 30 detects the tape current position T from the detection device 6, SEC from the detection device 17,
After taking in data such as the queue positions S and L of the LTR via the data bus and processing the signals internally, the queue positions S, L, etc.
Data such as L, current tape position T, and scan display position Sc are sent to the storage circuit 31 via the data bus.

At this time, the microprocessor 30 uses the address bus ad
While specifying the memory address of the memory circuit 31 via
A write control signal is sent to the memory circuit 31 via the control signal line (2).

Here, data transfer between each of the detection devices 6, 17 and the storage circuit 31 and the microprocessor 30 may be performed using the same data bus.

The above describes the import of detected data and the writing of data into the memory circuit 31.The internal configuration of the memory circuit 31 is, for example, 4 bits per address, and each bit is assigned to each of the above positions, ST, So, etc. It would be better if it corresponds to

As described above, the number of addresses required is equal to the number of tape positions to be displayed (for example, 30).

Next, reading of the storage contents from the storage circuit 31 and display on each of the display devices 33s and 33L will be explained.

First, the above readout is performed by sending a readout control signal and an address designation number from the microprocessor 30 to the storage circuit 31. At this time, addresses 1 to 30 are sequentially scanned, and this scanning is repeated at regular intervals. Repeat.

The data obtained by this repeated scanning is processed inside the microprocessor 30, becomes a display drive signal, and is sent to each display drive circuit 328, 32L.
s, 33L are driven for display.

These display drive circuits 32s and 32L are supplied with clock pulses corresponding to scanning for each address, and clock pulses corresponding to scanning for each address, and
A strobe pulse (or timing pulse) synchronized with the repetition cycle of scanning up to the address is sent.

However, one period of the strobe pulse should include at least 31 clock pulses, with 30 clock pulses corresponding to each tape position indication and one clock pulse corresponding to an SEC or LTR indication.

In this case, for example, by outputting a display drive signal pulse at the same time as a clock pulse corresponding to a position to be lit, all display segments and display elements can be independently designated and driven to light.

In the case of blinking drive, it is sufficient to change only the display drive signal between lighting and turning off every few or several strobe pulses, and the signal processing within the microprocessor 30 does not require any special blinking circuit. It can be easily achieved.

The calculation circuit 16 of FIG. 7 can also be included in the microprocessor 30 as software.

Note that specific examples of display formats by each of the display devices 33s and 33L are the same as those shown in FIGS. 4 to 6 described above.
The explanation will be omitted.

As is clear from the above description, the dictation recording and reproducing apparatus according to the present invention includes a tape current position detecting means for detecting the current position in the running direction of the magnetic tape on which the dictation is recorded, and a Cue signal detecting means for detecting a cue signal recorded at a position corresponding to a plurality of recorded contents, a storage means for storing a current tape position when the cue signal is detected as a cue position, and a plurality of display segments. display means for displaying the current tape position and cue position by lighting or extinguishing these display segments, and the display means displays the current tape position and cue position in visually different display formats. It is characterized by having a configuration for displaying.

Therefore, there is no need for a conventional mechanical indexing device, and the current tape position and cue position can be displayed using an electronic circuit and a display device, which facilitates miniaturization and portability.

Moreover, due to recent advances in IC technology, microprocessors and the like can be obtained at very low prices, so product prices can be reduced.

Furthermore, since at least two types of data are displayed on one display device, display efficiency is also high.

Furthermore, the conventional recording paper is no longer required, the operation is simple, and the efficiency of document creation work is greatly improved.

[Brief explanation of the drawing]

Figure 1 shows an indexing device 1 of a conventional dictation recording and reproducing device.
01, FIG. 2 is a block diagram showing a preferred embodiment of the present invention, FIG. 3 is a plan view showing an example of the display device 23 in FIG. 2, and FIGS. FIG. 5 is a plan view showing a specific display example of the display device 23 in accordance with the order of use of the dictation recording and reproducing device; FIG. 5 is a plan view showing another specific display example;
FIG. 6 is a plan view showing still another specific display example, and FIG. 1 is a block diagram showing another embodiment of the present invention. 6...Tape current position detection device, 17...°...
... Cue signal detection device, 19, 20 ... Memory circuit, 22 ... Display drive circuit, 23 ...
- Display device, 24...Display segment.

Claims (1)

[Scope of utility model registration request] tape current position detection means for detecting the current position in the running direction of the magnetic tape on which the dictated content is written; and cue signal detection means for detecting cue signals recorded at positions corresponding to a plurality of recorded contents on the magnetic tape. a storage means for storing the current tape position when the cue signal is detected as the cue position; and a storage means for arranging a plurality of display segments and displaying the current tape position and the cue position by lighting or extinguishing these display segments. and a display means for
A dictation recording and reproducing apparatus characterized in that the display means displays the current tape position and the cue position in visually different display formats.