JPH0263271B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tape recorder with a date function that records the date and time of recording as data on the tape when recording with the tape recorder.

When recording with a tape recorder, especially when recording live, it is often desirable to record conditions such as the recording date in order to organize the tape.

Traditionally, in such cases, there were many cases in which a person recorded the date directly through a microphone, but depending on the atmosphere of the recording venue, it may be difficult to say the date (for example, at a meeting or concert). ), or the inconvenience of having to record audio from a microphone every time.

It is an object of the present invention to eliminate the above-mentioned inconveniences in using conventional tape recorders and to provide a tape recorder with a date function that automatically records the date of recording as voice on the tape with a single switch.

Therefore, the tape recorder with a date function according to the present invention has a built-in electronic clock and means for generating sound, and by operating a switch from the outside, generates the date and time at the time of recording as an audio electric signal, and records it on the tape. It is something to do.

FIG. 1 shows an embodiment of the electronic circuit of a tape recorder with date function according to the present invention. In the figure, 11 is
A single-chip microprocessor (MPU) with built-in RAM and ROM, responsible for system control and clock functions. The audio generating section 12 is composed of a dedicated LSI 13 for audio synthesis and an audio data ROM 14, and generates an audio signal from an output terminal 19 based on data from a microprocessor. 15,1
6 and 17 are an amplifier, a tape recorder, and an analog switch for selecting date data and recording signals, respectively.

For the MPU 11, for example, Hitachi's 4-bit 1-chip type HMCS40 is used. Also, the sound synthesis unit 1
For example, Hitachi's audio synthesis LSI HD38880 is used for the audio data ROM 14, and Hitachi's HD38882 that includes an interface is used for the audio data ROM 14, for example.

The clock function is created by counting the internal clock using a timer/counter built into the MPU.

FIG. 2 is a flowchart for creating a clock function. Date data input in the diagram? is used to determine whether or not date data is input from the outside. When the date data input enable bit 110 becomes high level, it becomes yes, and the date data is written.
Date data is input from an 8-bit input port 111.

For example, the date data format is
The configuration is as shown in the figure. The bits surrounded by double lines in FIG. 3 are data, and the data is obtained by converting a decimal number into a binary code.

The date data entered in this way is
The date data is stored in the date data RAM area 112 in the MPU, and when the date data enable bit is changed from high to low level, time counting starts, and the data in the date data RAM is rewritten from time to time. All of the above software is programmed into the ROM 113 in the MPU as a system program.

For example, the data structure in the date data RAM is
As shown in the figure, the total number of MR0 to MR11 is
Twelve words (one word is 4 bits) are used for this purpose. At the same time, the date is output from output port 11 according to the data in the date data RAM.
4 and then displayed on the display element 18.

FIG. 5 shows the flow of operation of the entire system. First, when the recording enable terminal 115 becomes high level, a high level is output to the output bit 116 of the MPU, and the tape recorder 16 enters the recording state. When the audio generation enable terminal 117 goes high, the output bit 118 of the MPU goes high, and the analog switch 17 enters the audio input mode and waits for input of audio data.

Data for speech synthesis is output from the output port 119 of the MPU in accordance with the format requested by the speech synthesis LSI 13.

Next, consider an example in which audio is generated according to data in the date data RAM area in the MPU.

For simplicity, minutes and seconds are not pronounced.
The LSIHD38880 synthesizes audio according to the PARCOR method, and data for this purpose is written in the audio data ROM 14 for each unit audio as physical data such as PARCOR coefficient pitch. The contents of the audio data ROM 14 are arranged starting from address $x000 as shown in FIG. 6, for example, and contain physical data corresponding to the unit audio shown in the figure.

If you want to say 13:00 on Friday, June 20, 1980, you can sequentially specify the address of the unit audio data from the MPU as shown in Figure 7, and synthesize and output the audio one after another.

When all the audio has been output, a high level is output from the speech synthesis LSI 13 side to the input bit 120 of the MPU, the output bit 118 of the MPU is switched from high to low level, and the analog switch 17 is switched.
becomes the normal input mode in which the signal from the terminal 121 is accepted. When recording enable bit 115 is switched from high to low level during recording,
The output bit 116 of the MPU also changes from high to low level, and the tape recorder stops.

FIG. 8 is a block diagram of another embodiment of the present invention. In FIG. 8, 21 is a recording signal input terminal, 22 is an addition circuit, 23 is a recording circuit, and 24
25 is a clock circuit, 25 is an encode circuit, 26 is a recording head, 27 is a magnetic tape, 28 is a reproduction head,
29 is a low-pass filter, 30 is a high-pass filter, 31 is a decoding circuit, 32 is a speech synthesis section, 3
3 and 34 are sword output terminals, and 35 is a switch. In the case of recording, data such as date and time from the clock circuit 24 is encoded at a low bit rate by an encoder circuit 25, added to the recording signal by an adder circuit 22, and recorded on a tape by a recording amplifier 23. The coded data is recorded at sub-audible frequencies. In the case of reproduction, among the reproduced signals, the signal that passes through the high-pass filter 30 that passes audio frequencies is sent to the audio circuit and becomes sound. The encoded data such as recording date and time is separated by a low-pass filter 29 and encoded by an encoding circuit 31. If there is a request to reproduce the date and time information, by operating the switch 35, the voice synthesis section 32 outputs the recording date and time as voice from the encoded data. This speech synthesis section 32 is, for example, Hitachi's LSIHD38880, which uses the PARCOR method, which is well known among speech researchers.
This can be easily achieved using the HD38881.
Further, as a reproduction head, a head using a Hall element having excellent low frequency characteristics is convenient.

As shown in the above embodiments, according to the present invention, when recording with a tape recorder, it has become possible to record the date of recording audibly on the tape with a single button. This eliminates the hassle of the conventional method of recording the date externally using a microphone.

Note that the basic idea of the present invention can be applied not only to audio tape recorders but also to other recording media.
Further, in this embodiment, when recording date data, normal signals from the terminal 121 cannot be recorded, but it is also possible to mix these signals and record them at the same time. In addition, the clock function used in this example is dedicated to
There is no difference in effectiveness even if it is configured with LSI.

[Brief explanation of the drawing]

Figure 1 is a block diagram of the electronic circuit of a tape recorder with a date function according to the present invention, Figure 2 is a diagram showing the flow of software for creating a clock function, and Figure 3 is a diagram showing the flow of the software for creating a clock function. Figure 4 shows the data format when setting
FIG. 5 is a diagram showing the configuration of the date data RAM area in the MPU. FIG. 5 is a diagram showing the operation flow of the entire system of the tape recorder with date function according to the present invention.
7 is a diagram showing the configuration of a voice data ROM for voice synthesis, FIG. 7 is a diagram showing a procedure for generating date data, and FIG. 8 is a diagram showing a block diagram of another embodiment of the present invention. 11... Microprocessor (MPU), 112
...Date data RAM area, 113...ROM,
12...Speech generation section, 13...Dedicated for speech synthesis
LSI, 14...audio data ROM, 15...amplifier, 16...tape recorder, 17...analog switch, 35...switch.

Claims (1)

[Scope of Claims] 1. A clock means for generating date and time data in a tape recorder comprising a recording means for recording a recording signal on a magnetic tape and a reproduction means for reproducing the recording signal recorded on the magnetic tape. and an encoding means for encoding the date and time data generated by the clock means, an addition means for adding the encoded date and time data to the recorded signal, and a separating means for separating the encoded date and time data from the recorded signal reproduced from the magnetic tape. a separating means; a decoding means for decoding the encoded date and time data separated by the separating means; a speech synthesis means for synthesizing the decoded date and time data into speech; A tape recorder with a date function, comprising a switch means for selecting output or non-output.