JPH03119399A - Portable small-sized acoustic device - Google Patents

Abstract

PURPOSE:To reduce the size and weight of the device, to prolong its operation life, and to shorten the access time by using a thin type mounted IC memory as a detachable acoustic signal storage device, CONSTITUTION:A ROM or/and RAM where acoustic data are written are mounted thinly on an IC memory card 1 and easily attached and detached by a connector 2. Then analog acoustic data which are received by a receiver 4 are converted into digital acoustic data, which are transmitted to a microcomputer 3 and written in the IC memory on the IC memory card 1. At the same time, a digital acoustic signal is sent from the microcomputer 3 to an acoustic generating device 5 and converted into an analog acoustic signal, which is reproduced by headphones or speakers. Thus, the sound recording and reproduction of the acoustic data are performed by fully electric signal processing. Consequently, the size and weight are reduced, the operation life is prolonged, and the access time is shortened.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is applicable to cassette tape decoders and spatula [Prior Art] Conventional small portable audio devices include magnetic storage devices, optical storage devices, Acoustic signals were stored, and the signals were read, written, and converted into electrical signals by using mechanical motion such as rotational movement by a motor and movement of the head.

[Problem to be solved by the invention] However, since the conventional technology requires mechanical movement, a mechanism for mechanically driving the reading device and storage device is required, which limits miniaturization and aging. ing. In addition, since the mechanical drive is performed using the electrical energy of the battery,
There are problems with high power consumption (high power consumption) and short operating life with one battery replacement.Furthermore, since it is mechanically driven, it takes time to access any address in the storage device. There is a problem.

Therefore, the present invention solves the problems of reducing the size and weight, prolonging the operating life, and shortening the access time. The aim is to extend the access time and shorten the access time.

[Means for Solving the Problems] The portable small acoustic device of the present invention includes: (a) means for using a thinly mounted IC memory as a removable storage device for acoustic signals; (b″) from the storage device. , a means for transmitting an acoustic signal to a sound generating device; <c> a receiving device for converting an audio signal and a radio wave signal into an acoustic signal; (d) a means for transmitting a signal from the receiving device to the storage device. It is characterized by

[Function] According to the above configuration of the present invention, since a thinly mounted IC memory is used as a storage device for acoustic signals, it is possible to transmit a signal to a sound generating device as well as when a signal is transmitted from a receiving device. Also, when reading and writing data in a storage device, no mechanical drive is required, and means that can process all electrical signals can be used, resulting in smaller size, lighter weight, longer operating life, and shorter access time. can be realized.

[Examples] The present invention will be described in detail below based on Examples.

FIG. 1 shows a system block diagram of a headphone stereo according to an embodiment of the present invention.

In the IO memory card 1, R
OM or battery backed RAM,
Or both are thinly mounted in card form,
The connector 2 allows easy attachment and detachment. By connecting the IC memory card 1 to the connector 2, the IC memory card 1 is directly connected to the data bus, address bus, control signal, and power signal of the micro combinator 3.

The microcomputer 3 is supplied with power from the power source 7, and the receiving device 4. The sound generator 59 controls the display and operation input device 6 and the IC memory card 1.

The receiving device 4 includes an AM-FM and other radio wave tuner, a detection circuit, an amplifier, a microphone, an A/D converter, and the like.

The sound generator 5 includes a D/A converter, an AUDIO
Includes circuits, amplifiers, headphones, speakers, etc.

Display and operation input devices include L, OD panel, LKD,
The analog audio data received by the receiving device 4, which includes a switch input, a remote control device, etc., is converted into digital audio data and transmitted to the microcomputer 3.
0 is written to memory and recorded. At the same time, a digital acoustic signal is transmitted from the micro combinator 3 to the acoustic generator 5.
The signal is transmitted to the computer, converted to an analog audio signal, and can be used to generate sound using headphones or speakers.

Also, by separating the IC memory card 1 from the connector 2 and replacing it with an IC memory card 1 on which other audio data has been recorded, other audio data can be transferred to the microcomputer 3. It can also be easily reproduced via a sound generator.

As described above, it is possible to record and reproduce audio data entirely by electrical signal processing without using any mechanical drive by using a thin C memory card as an audio data valve.

[Effects of the Invention] As described above, the portable audio device of the present invention enables recording and playback using only electrical signals without using any mechanical drive by using a thin IO memory card as an audio data valve. Therefore, it is very convenient to carry as a small and lightweight audio device with long battery life and short random access time. Furthermore, the IO memory card of the acoustic data valve itself is thin and lightweight, making it convenient to carry and store.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of a portable small acoustic device of the present invention. 1... IO memory card 2...
... Connector 6 ... Micro Combiator 4 ...
...Receiving device 5...Sound generating device 6...Display and operation input device 7...
...More than power supply

Claims (1)

[Scope of Claims] (a) means for using a thinly mounted IO memory as a removable storage device for acoustic signals, (b) means for transmitting acoustic signals from the storage device for acoustic signals to a sound generating device , (c) a receiving device that converts audio signals and radio wave signals into acoustic signals, and (d) means for transmitting signals from the receiving device to the acoustic signal storage device. Small sound equipment.