JPS58130407A - Recorder - Google Patents

Abstract

PURPOSE:To permit knowing of the time and date when reproduced contents are recorded from a small sized cassette tape recorder in the stage of reproduction so as to take advantage of clock functions by recording sound signals and absolute address signals time-dividedly on the same track of a recording medium. CONSTITUTION:The signal from a clock 2 is displayed on a digital display part 2a. In the stage of recording, the signal from a microphone is supplied through a recording amplifier circuit 3 to the fixed contact 4c of a switch 4, and the absolute address information indicating the time and date information is supplied as the output signal of an encoder 5 to the contact 4c. When a mode switch 8 turns on, a movable contact 4c changes over in synchronization with a prescribed time section. A fixed contact 4a and a fixed contact 4b are connected automatically and alternately at prescribed time intervals so that sound signals and the digital code signals of the time and date are recorded time- dividedly on the same track of a magnetic tape 6 through a magnetic head 7 for recording.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a recording device that is suitable for application to, for example, a small cassette tape recorder that has a built-in clock and has a digital display section that displays the date and time on the outside and uses equal pressure for meeting memos.
This particularly improves the usefulness of this compact cassette tape recorder.

Recently, a small cassette tape recorder that uses a memo isobaric system and has a built-in clock and a digital display section that digitally displays the current date and time has been proposed. This kind of small cassette tape recorder is convenient because it displays the date and time when it is used, but it only has a clock function independent of the internal mechanism of the small cassette tape recorder, and the recorded date and time of the playback contents. Since the date and time are not recorded in correspondence with the recorded location, it is impossible to immediately know the recording date and time of the playback content from a small cassette tape recorder when playing back, and the clock function is not sufficient for small cassette tape recorders. There were drawbacks that were not utilized in tape recorders.

In view of this point, the present invention aims to provide a more useful recording device with a particularly simple configuration.

Hereinafter, an embodiment in which the recording device of the present invention is applied to a small cassette recorder will be described with reference to FIGS. 1 to 3. □ In Figure 1, (1) generally shows a small cassette tape recorder used, for example, to record meeting memos, and this small cassette tape recorder (1) has a built-in clock (2). The date and time can be displayed using the date and time signal obtained from the digital display section (2a)' which is located in an easily visible position outside.

Regarding the recording system of this compact cassette tape recorder (1), No. 16 from the microphone M of the compact cassette tape recorder (1) is connected to the recording amplifier circuit (3) through the signal input terminal (3a).
), and the output terminal of this recording amplifier circuit (3) is connected to the first fixed contact (4a) of the switch (4). Also, a date and time information signal as an absolute address signal from a clock (2) is supplied to an encoder (5)K, and this encoder (5) generates a digital code signal for the date and time and outputs it from an output terminal (5a). Make it.

This date and time digital code signal is configured as follows, for example. The signal is transmitted by the width W of the section separated by the rise and fall of the pulse, so that W = 100μ.
1" when singing, and HOII when W = 200μ decrease. For example, in the digital code signal of Fig. 4A, 1°°"1"1 is shown sequentially from the first rise.
""1"60""1""1"1"°"1""□II
II OII H, 1”...The section a of this digital code signal is, for example, a microscopic time of 10/1000 seconds (10m9eO
)>a' to generate a digital code signal corresponding to the current date and time.

At the beginning of this interval a (period b = 400μ decrease in this example), this digital code signal, instead of the gross normal voice signal of FIG. 4A, continues for a predetermined period of time. 1111", and then 0", (tC-=20
0 μ reduction). Then, the interval below that (d=94
Using 00μf+[1c) as the information code, convert each digit into a binary coded decimal number at the specified position, and write the year as an absolute address.
The 5th day of the month, hours, and minutes are digitally coded and assigned sequentially. For example, the absolute address month is January 1, 1982.
At 9:40 on the 9th, it's '1000' for the year.
, "0010", 0" for the month, "0001"01" for the 2nd day, 1°00 for 1001" 9 o'clock
",1001".

For minutes, '100' and '0000' are assigned to predetermined positions in the information code.Then, this date and time digital code signal generated by the encoder (5) is sent from the output terminal (5a) to the switch (4). The encoder (5) generates a control signal for the switch (4) and outputs it to the output terminal (5).
b) Supply to (5c). This control signal, for example, switches the movable contact (4C) of the switch (4) to the first fixed contact (4b) in synchronization with the digital code section which is supplied to the second fixed contact (4b) for the same time as the digital code section 10m (5).
Release the fixed contact (4a) from the second fixed contact (4b).
This is a control signal that causes a switch operation such as a K connection. When the mode switch (8) as a bushing switch is on, that is, in the ode mode, the control signal obtained at the output terminal (5b) is supplied to the switch (4) via the mode switch (8) at predetermined time intervals, for example, every 15 seconds. do as you like. In addition, when the mode switch (8) is off, that is, in manual mode, when the button switch (9) with one end grounded and the other end connected to the encoder (5) K is pressed, the output terminal of the encoder (5) is pressed. Arrow the control signal from (5C)! As shown in (9a), it is supplied directly. Further, the signal obtained at the movable contact (4C) of the switch (4) is supplied to the coil of the recording head (7) that comes into contact with a predetermined trunk of the recording magnetic tape (6) as a recording medium.

As for the playback system, the signal from the playback head that comes into contact with the recorded magnetic tape is supplied to the output terminal (12a) of the audio signal playback circuit through the audio signal playback circuit, and the signal is time-divided into the audio signal. The digital code recorded in (
The signal is supplied to a waveform shaping circuit Q31 which converts the output signal into a waveform suitable for signal discrimination in order to extract the lit signal. 2) is supplied to the drive circuit α4JK.In this drive (9) path I, among the audio signals and digital code signals recorded in a predetermined position in a time-division manner, a digital code signal is converted into an identification code, e.g.
111" and has a width of 400μ, the digital code at the predetermined position of the information code that follows the start code "0" is determined from the input signal, and the date and time information at the time of recording is determined. K to hold until the next date and time information is obtained. This recording date and time information signal is, for example, a slide switch changeover switch Q9.
1 of the time from the clock (2).
The switch (
The movable contact (15d) of the first seagull is the first fixed contact (15a)
Digital display N (2a) when connected to
The absolute address signal tone indicating the recording date and time is displayed at the time. Note that the other parts are constructed in the same manner as a conventional small cassette tape recorder.

In this embodiment configured as described above, recording and reproducing operations can be performed in the same manner as before, and the current time is displayed on the digital display section (2a) by a signal from the clock (2) on the scales, etc. In addition, during recording, the signal from the microphone M is supplied to the first fixed contact (4C) of the switch (4) via the recording amplifier circuit (3), and a digital code signal is supplied as the output signal of the encoder (5). is the second fixed contact (
4C), and when the mode switch (8) selects auto mode and is on, the control signal is supplied to the switch (4) via the switch (8), and the movable contact (4C) The digital code width of 10 m5ec is switched in synchronization every predetermined time, for example, every 15 (8), and the first fixed contact (4a) and the second fixed contact (4b) are automatically switched alternately at a predetermined time interval. Since the recording magnetic head 7 is connected to the same trunk of the magnetic tape (6),
), the audio signal and the digital code signal of date and time as an absolute address signal are recorded in a time-division manner.

Further, here, when the mode switch (8) selects the manual mode and is off, the digital code signal is recorded only once by pressing the switch (9) in period synchronization for a predetermined interval, for example, 19 m9ec.

On the other hand, a magnetic tape a (lV, for example, 1982
When playing back at 14:10 on the 21st of the month, the big-amplified signal from the playback magnetic head (11) K is supplied to the audio signal playback circuit a2, where normal playback operation is performed, and the waveform shaping circuit 4 The signal is supplied to the drive circuit I through the signal, and it is determined that it is a digital code by the identification code.Furthermore, an absolute address signal of the recording date and time is obtained from a predetermined position of the digital code signal using the start code as a guide. At the same time, since the date and time information is sequentially held in this drive circuit I until the next digital code signal arrives, the movable contact (15d) of the switch and approximately one fixed contact (15a)
If it is connected, the digital display section (2a) will display, for example, the date and time of recording, and for example, the absolute address r82.1.19.9340 J will be displayed at the time corresponding to the recorded content. That will happen.

As described above, according to this embodiment, unlike the conventional case, in a small cassette tape recorder of the date and time display section (2a), an audio signal and a digital code signal corresponding to the date as an absolute address signal are time-divided with a simple configuration. can be recorded in the same trunk. Therefore, the recording date and time of the recorded content being played back can be displayed from the digital display section (2a) K that displays the date and time. Therefore, the user has the advantage of being able to instantly know the recorded date and time of the conference being played back, for example, from the small cassette tape recorder (1).

In addition, in the above-mentioned embodiment, an example was described in which the present invention can display the recording date and time on the digital display section (2a). If the number and other contents are recorded at a predetermined position of the digital code signal, the contents can be displayed on the digital display section (2a) during playback, so the digital display section (2a) can be used effectively. It will be easy to understand that some things are similar to the above-described embodiments.

Furthermore, in the above embodiment, an example was described in which the present invention was applied to a small cassette recorder (1), but it is also possible to apply the present invention to a recording device having any digital display section for recording an audio signal such as a VTR. It is easy to understand that since the absolute address signal can be recorded in the same trunk, the same effects as those of the above-mentioned embodiment can be obtained.

In addition, in the above embodiment, the width of the digital signal was changed to represent 110111 "1", but it is also possible to record it so that the no-low level signal represents '1' and the low level signal represents 0". It is easy to understand that various other configurations are possible as long as the signal recording method makes it easy to distinguish ', and that similar effects can be obtained.

It goes without saying that the present invention is not limited to the above-described embodiments, and that various other configurations can be taken without departing from the gist of the present invention.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing one embodiment of the recording device of the present invention, and FIG.
3 and 3 are system diagrams for explaining one embodiment of the present invention, and FIG. 4 is a line diagram for explaining the present invention. (1) is a small cassette tape recorder, (2) is a clock,
(2a) is a digital display section, (4) is a changeover switch, (5) is an encoder, (6) is a recording magnetic tape,
(7) is the recording head, (8) is the mode switch, (9)
is the pushbutton switch, the song is the recorded magnetic tape, αυ is the playback head, 0 is the waveform shaping circuit, and α is the drive circuit.

Claims (1)

[Claims] A recording device characterized in that an audio signal and an absolute address signal can be recorded on the same trunk of a recording medium in a time-sharing manner.