JPS59146496A - Sound recording and reproducing device - Google Patents

Abstract

PURPOSE:To obtain a sound recording/reproducing device of a compact and light-weight structure with a low replacing frequency of a battery by using the combined clock signal of an A/D converter with the clock signal of a D/A converter. CONSTITUTION:The sound signal supplied from a mike 2 is amplified by an amplifier 3 and then digitized by an A/D converter. This digital signal is stored in a memory 1. Thus a sound recording action is over. For reproduction, the data output of the memory 1 is converted into an analog sound signal by a D/A converter 5, and a speaker 7 is driven by an amplifier 6. An I/O port 10 receives the signal of a keyboard or a switch 9 and delivers an address display to a display body 11 in addition to the sound record/reproduction and the control for retrieval. When an address is designated by the keyboard 9, this designated address is immediately called out and a quick feeding and rewind functions like a tape is dispensed with to eliminate a waiting time. A higher function is attained if a microcomputer incorporating a program is used in place of an address counter 8.

Description

[Detailed description of the invention] The present invention relates to a recording/playback device having an audio storage function.

An object of the present invention is to provide a recording/playback device that is small, lightweight, and requires less frequent battery replacement.

Another object of the present invention is to facilitate the integration of voice storage functions into portable devices such as watches, desks, and electronic memos.

Conventional recording and reproducing ftVc Oi-C has generally been performed using a magnetic tape recording method. On the other hand, recently, as calculators, radios, etc. have become smaller, there has been an increasing demand for smaller audio recorders, that is, tape recorders. However, conventional tape recording methods are not suitable for small size. Advanced mechanisms such as motors with the function of controlling the rotation of the tape are difficult to miniaturize and at the same time difficult to quantify. 2K requires a considerable amount of power to drive mechanisms such as motor relays, and the lifespan of batteries, which are the power source for portable devices, is too short, reducing the product value. The third reason is that due to miniaturization, a load is placed on the mechanism υ.
At the same time, it is inevitable that tapes will become smaller and the quality of reproduced audio will be poor. Fourth, it takes time to search because the tape is fast-forwarding and reversing.

The present invention eliminates these drawbacks by using a semiconductor memory instead of the conventional magnetic tape as a storage medium. ′ □ “::Professional diagram in 1st- is the present invention, Ω・, Rokuko now, ha.

1 is the memory area. The address of this memory is determined by the address counter 8.Clock box number CL ('j, Δ/D converter 4,
D/A converter: Controls data input/output of the memory in synchronization with the two converters as the clock for the address counter at the same time as the fifth generation clock. The audio input from microphone 2 is up 3
The signal is amplified by the A/D converter 4KJ:,j7, and stored in the memory. This is one recording. For playback, add 1 power to Yasori's data.
/A converter 5 converts the analog audio signal to S, and amplifier 6 drives the front vinyl cover. Matako 10 ports 1
0 receives the signal from the keyboard or switch 9 and records.
In addition to controlling playback and search, it also plays the role of outputting address display to the display 11. On keyboard 9!
When you specify a new address, the specified address is called immediately, and the fast forward and reverse functions are performed like a tape.
・No need for silkworms, so there is no waiting time. this,·
・、! People, 7. ．． If a microcomputer with a built-in program is used in place of the 1°res counter 8, an even higher degree function is possible. For example, Roku-on, %□Stone automatic 1
11, repeat, automatic search, etc. 10 boats 10
If it has a register function, it will hold the output from the clock circuit using a common clock signal, and display the time on the display.
．． It also becomes possible to inform and know the time.・In other words, it is also possible to co-host the Jisho Noh, and also to simultaneously store the two hours of recording time in memory and display it on the display during playback. Examples of the memory of the present invention: 1 □ , , , , 1 '
, ··: ·vinegar. Vocal memory □ memory needs to be non-volatile and ephemeral □ in nature.

When such a CMOS device is used, the static current is very small, so non-volatility can be achieved with extremely low power consumption. Also, the operating power and addressing frequency are at most 10K.
Since it is about H2, it will be less than 10μ8 at 1.5V. B
ZT and BZT are data input/output lines, and A is an address line that controls the transistor 44j5. 1
21.1. ! i constitutes a memory printer. ,, □ -Figure 3 shows □memory as an audio storage medium.

1 real), rl# shows an example. Reference numeral 16 indicates a flow gate, which is embedded in the insulation film 17. Nido.

When the first voltage is applied, high-energy electrons cross the barrier of the gate film □ and are injected into the gate □ with a 70-taing, and are maintained as they are for more than -0 years. Therefore, the channel resistance of a transistor is determined by the amount of charge injected.

□R□Figure 4 shows this relationship. That is, avalanche mixture pressure ψ
By applying more than av d' to the drain, the channel resistance R9''
f Control f. □This injection time is approximately 100 minutes.
It's μ. Also, VaV is 0]'capable up to about 5V.
□' Fig. 5 shows an example of the configuration of an audio recording and reproducing apparatus using this nonvolatile memory cell.・The voice input AZn is amplified by the amplifier 1B, and inputted to the buffer 19 by matching the bias with the memory cell. Adon...
, the cell power j1 is selected by the signal A':. E is a charge erasing signal. Playback is 0. The transistor 25 is turned on by E, and 1. Directly calculate the Yanel resistance and Reff using the negative envelope basis resistance ft and e7 9::
An, Bu2,,(j,,via:,S1beaker,,21
．． 1. Output and output 0, here button (η memory, 7.
) ratuji, star, hafu, ro, niteii, (, gate,:
,.

(,, F 4 M OS) Even if you reach it with a tiny nib, you will lose 1. , ,X)n,,ne,.

If MNG, B, etc. is non-volatile, then what should I do? ,.

Examples listed here - q, f) Direct analogue to Umemory.

Signal base, access, etc., can be found in Figure 1. And, II D/A Konno ≦ - Even 5 is omitted, but digitally, for example, 1m of the previous example! M
, OS, memory: 1. .

There is no problem in simply replacing the bit with one bit of non-volatile memory. ,,,.

- The present invention uses a semiconductor as a memory element, and the required capacity is approximately 1. ．． 6. .

Kb↓t, 7 seconds, Anaguchi (, Xing, great force type 2 K b
It becomes 7 sand, and a pattern of, for example, 2 μm is used.

, 25. ,．． Using 6 Kbit/chip non-volatile memory, it is possible to record audio for 15 minutes and 4 seconds using 6 chips. This means that the instrument can be miniaturized to the extent that it only takes about 7 minutes to sing, and it is also possible to realize a dramatic reduction in the size of the instrument. Recording again.

The gravity consumed during playback is because there is no motor power at all.
The power was so low that even a regular silver battery could be used for a fraction of the time.

Also, a control copper plate used in the present invention.

It will be even more convenient if functions such as time bar 1 are combined.

? The memory is the voice ^ ``) 1. In addition to the area, it is also the time.

Time σ) jIi: ), , j, total → design floor or result '1. is also shared with device 4. Also, if the controller is a microcomputer, the clock, console, voice memory, etc. can be controlled by a series of software, making it possible to make them all the same. A portable information device with high commercial value that can share both the time d4 display and the correction/processing display, and is a compact V-top with all semiconductor components! It becomes possible to produce t.

[Brief explanation of drawings]

FIG. 1 shows a block diagram of the present invention, where f61 is a semiconductor memory device, 8 is an address controller, yi';+=v-zede, 10)j Ilo, boat,
11 (, ma-acid 2 yen [g. Also 2.5 is voice friend Rikirei~, 4 digits: J, A/'D-ff
B voice output section Figure 2 shows the memory cell of CMO6. Figure 6 shows the floating gate noul (FAiv!O).
8) -f71J of the nonvolatile storage transistor. Figure 4 (bow, drain applied voltage and channel etc.1i11i
A diagram showing the relationship between the resistors Reff and FIG. 21 is a speaker. ↓Table - Applicant Suwa Seikosha Co., Ltd. Agent Patent Attorney Mogami ``／J // Condolences ／１''5'lJ House 7 Karasu 2) Z 5

Claims (1)

[Claims] An A/D converter that converts an audio signal into a digital signal, a semiconductor storage device that stores the digital signal, a D/A converter that converts the digital signal stored in the semiconductor storage device into an analog signal, and converts the analog signal into an audio signal. 1. A sound recording and reproducing device comprising a speaker for reproducing sounds, characterized in that the clock signal of the A/D converter is shared as the clock signal of the D/A converter.