JPS61269436A - Audio information transmission method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Industrial Application Field The present invention relates to a voice information transmission method. It is designed to convey a large amount of information efficiently.

g) Prior art and its problems Radio broadcasting is a means of transmitting audio information to a large number of people. However, radio broadcasting has the following problems.

(a) It is not possible to automatically select and listen to only the information that is needed (for example, the market price of a particular stock in the stock market).

(b) In a radio receiver, processing from receiving radio waves to outputting sound waves is performed without time expansion or contraction or delay. Therefore, it was necessary to listen to the radio according to the broadcast time. Furthermore, it has not been possible to time-divide (for example, divide into every few tens of seconds) one frequency and use it among multiple broadcast stations.

(1) Purpose The present invention solves the above-mentioned problems of the prior art, and by performing even higher information compression, it is possible to easily transmit an extremely large amount of audio information with a limited information transmission capacity (for example, frequency band). The purpose of the present invention is to provide a voice information transmission method that enables the following.

B) Means for Solving the Problems The present invention achieves the above objects by transmitting information corresponding to text, which is a classification code for classifying information content and a string of characters and symbols representing audio information, from the transmitting unit. The receiving section selects and stores the information signal required by the receiving section based on the classification code, and converts the information code of the stored information signal into voice when necessary. The feature is that the audio information is obtained by

FIG. 1 is a schematic diagram illustrating the invention in detail.

A digital information signal a consisting of a classification code and an information code is sent from the transmitter 1 via a transmission path 2.

The classification code is a search code for classifying information content. This consists of a symbol indicating that it is a classification code, followed by a finite number string. For example, you can use the slash symbol %/“ and a 10-digit number.

The information code corresponds to text, which is a string of characters and symbols representing audio information. Since it is a digitally encoded text, it is composed of -1 and 0.

Characters and symbols that form text include katakana, accent marks, punctuation marks, numbers, kanji, kana, alphabets, and phonetic symbols.

Text includes katakana, accent marks, and punctuation □
It may also consist of only dots, numbers, and alphabets.

An information code is a digitally encoded text.

One information signal a is created by the information code and the classification code.

There is always a classification code at the beginning of the information signal a. When a classification code is detected, it can be seen that a new information code begins following it.

Examples of information signals and corresponding information contents are shown below.

[Example 1] 10000010084 Midousujido Maori, Kitamukiwa, Shutaipumasu.

[Example 2] 10012000000 tenkigamaikiyou△demas.

Nishinihonwo, where ma is an accent symbol and △ is a blank symbol. In Example 1, 10000010084 is a classification code representing traffic information for Midosuji. In example 2, 10012000
000 is a classification code representing the nationwide weather situation.

Following these, there are katakana sentences in the text.

On the other hand, the receiving section 3 includes a sorter 4 consisting of a CPU or the like:
It has an accumulator 5 made of a semiconductor memory or a floppy disk, and a speech rule synthesizer 6.

The meaning of the classification code is predetermined. In each receiving section 3,
Therefore, only necessary classification codes are registered in the sorter 4 in advance.

The sorter 4 successively compares the registered classification code with the classification codes of the information signals sent one after another. Only information signals whose classification codes match the registered classification codes are selected and stored in the accumulator 5.

Information signals with classification codes that do not match the registered classification codes are discarded.

For example, in a certain receiving section, the classification code 1001200
If only '0000' is registered, all information signals including this classification code will be stored. therefore,
The information signal corresponding to the text "Tenki Gaikyou..." in Example 2 is selected and stored.
1 speech rule synthesizer 6 receives instructions from the recipient
Then, the stored information code is converted into text and further output as audio.

The receiving section can obtain only pre-registered audio information among various information such as stock market information, traffic information, weather information, etc.

0U Transmitter configuration The configuration of the transmitter will be explained.

There is one or more transmitters. If there are multiple units, divide the transmission time and use them.

All data to be sent is stored in the database 22.22'.
・ Suppose that it is stored in . These are, for example,
These include the Japan Meteorological Agency's weather information database, the police's traffic information database, and the stock market's stock price database. Additionally, product information from department stores can also be used as a database.

The sender manually instructs the transmission content creation unit 21 regarding the transmission content to be transmitted.

The transmission content creation unit 21 extracts necessary information from the databases 22, 22', . . . in accordance with the instructions. For example, if you want to send weather forecast information, you can search the Japan Meteorological Agency's database to get the text of the weather forecast. A classification code corresponding to the weather forecast is attached to this and sent to the transmission content memory 25.

In this way, information signals consisting of text and classification codes are stored one after another in the transmission content memory 25. The surrounding texts are not related in content. Independent texts are being memorized.

The memory scanning unit 26 scans the transmission content memory 25 and sends an information signal consisting of a classification code and text to a digital code modulator 28 .

A digital code modulator sequentially converts an information signal, which is a digital signal, into an analog signal. This is a well-known function of modems, etc.

The purpose of converting it to an analog signal is to transmit it wirelessly. It is necessary to modulate (AMlFM) a carrier wave of constant frequency with a digital signal.

For example, for a digital signal of 60", 210
For 0 Hz and '1', a modulated wave of 1300 Hz is created.The length of one signal may be about several I'rls.

This modulated wave modulates the carrier wave.

The modulated carrier wave is emitted from the wireless transmitter 29 and the antenna 8 into the atmosphere as a radio wave.

The transport means here uses radio waves. However, the present invention is not limited to this, and cable broadcasting is also possible.

In the case of wired connection, electric wires or fiber optic cables can be used. It can also be sent as a digital signal.

In any case, the voice is not transmitted as is, but the characters and symbols that form the source of the voice are changed to digital signals, and the signals are transmitted essentially as digital signals.

(To) Configuration of receiving section The configuration of the receiving section will be explained with reference to FIG.

The antenna 9 captures radio waves, and the wireless receiver 31 receives them. The resulting analog signal is returned to the original digital signal by the digital code demodulator 32. This consists of a classification code and an information code.

The classification code of the information desired by the user is registered in the classification code memory 34 in advance. This may be one or more.

The sorting circuit 33 successively compares the received classification code and the classification code registered in the classification code memory 34. If there is a match, this information signal is selected. If there is no match, this information signal is discarded.

The selected information signal is sent to the storage section 36, and the text,
Both classification codes are stored here.

In this way, information signals having the registered classification codes are stored one after another in the storage section 36.

The sorter 4 (FIG. 1) corresponds to the combination of the sorting circuit 33 and classification code memory 34 shown in FIG.

The user does not need to be near the receiver all the time.

The receiving section automatically repeats selection and accumulation.

The user gives an output instruction to the receiving section at a convenient time and when necessary.

When receiving an output instruction from the user, the scanning section 37 takes out the text from the storage section 36 and sends it to the display section 38 and the speech rule synthesizer 6.

The speech rule synthesizer converts text into speech, and for example, in the case of English sentences, DECtalk from DEC (USA), PRO9E 2000 from PEECHPLUS (USA), etc. can be used. For Japanese katakana sentences, Toyo Tsushinki's TSS-5QQC can be used.

The text converted into speech is output from the speaker 40. The user can learn information by listening to the audio.

The display section 38 displays characters on the drawing.

For example, a CRT device is used.

Either or both of audio expression and visual expression may be used.

(B) When using time-division multiplex broadcasting radio waves, the broadcast time can be divided and multiple broadcasting stations sharing the same frequency carrier can perform time-division multiplex broadcasting.

This is because the transmitted information consists of mutually independent short sentences and does not need to be broadcast continuously.

As shown in FIG. 4, in addition to the transmitting unit 1 for wide area broadcasting, transmitting units 1', 1'', 1#', 1 for small area broadcasting are installed at intersections of roads 7, 7, etc. ″′,... are installed.

The first 45 seconds of the 1-minute transmission time unit are transmitted by transmitter 1.
Broadcasting to a vast area A (for example, stock market conditions)
and for the remaining 15 seconds, transmitters 1', 1", 1#, 1
``'', ... will send traffic information at each intersection. In this way, small areas A', A'', A#,...
In addition to wide-area broadcasts, you can also hear audio traffic information appropriate for each intersection.

ri) Effects (1) The selection of information content is done in the receiving section. There is no need for the transmitter to select the information content. Since the transmission is simply performed regardless of the difference in information content, the configuration of the transmitter is simplified.

(2) The receiving section automatically selects and stores information, so you can listen to only the information you need, when you need it. It is much more efficient in obtaining information than radio broadcasting.

(3) Rather than transmitting the voice as it is (for example, by PCM modulation), the characters and symbols that form the source of the voice are transmitted as digital signals. Therefore, an extremely large amount of information can be sent with a small transmission capacity.

For example, if audio is transmitted as PCI data, 5(i
The amount of information is approximately Kbit/sec. In the present invention, the amount of information required to transmit voice at normal speaking speed is 8Q.
It becomes bit/sec. However, one character is represented by 8 bits. As for the amount of information, a capacity of 1/700 is sufficient.

(4) Since it becomes possible to transmit large amounts of information, the content can be more literal and diversified.

(5) Since the computer can be directly connected to the transmitter, there is no need for humans to read out information and input it into the transmitter. No human effort is required for data entry. Data can be entered at high speed.

(6) One transport means can be shared by two or more transmitters.

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram of the present invention. FIG. 2 is a configuration diagram of the transmitter. FIG. 3 is a configuration diagram of the receiving section. FIG. 4 is a broadcast layout for explaining time division multiplex broadcasting. 1.1'...Transmission section 2...Transmission path 3...Reception section 4...Selector 5...Accumulator 6...・・Speech rule synthesizer
, 21 ... Transmission content creation section
1゜22 ... Database 25 ... Transmission content memory 26 ... Memory scanning section -
28... Digital code modulator
. 29...Radio transmitter 31...Radio receiver 32...Digital code demodulator 33...Selection circuit 34...Classification code memory 36...Storage section 37... ... Scanning section 38 ... Display section 40 ... Speaker

Claims (6)

[Claims] (1) The transmitter sends an information signal consisting of a classification code for classifying the information content and an information code corresponding to text, which is a string of characters and symbols representing audio information, and the receiver An audio information transmission method characterized by selecting and storing information signals required by the receiving section based on the codes, and converting the information codes of the stored information signals into audio when necessary to obtain audio information. . (2) The classification code includes a symbol indicating that it is a classification code,
Claim No. 1 consisting of a finite fixed number of numbers (
The voice information transmission method described in section 1). (3) The audio information transmission method according to claim (2), wherein the classification code is composed of a slash "/" followed by a 10-digit number. (4) The characters and symbols forming the text are any of katakana, accent marks, punctuation marks, numbers, kanji, kana, alphabets, and phonetic symbols.
) The voice information transmission method described in section 2. (5) The voice information transmission method according to claim (1), wherein the characters and symbols forming the text are any of katakana, accent marks, punctuation marks, numbers, and alphabets. (6) When there is a wide-area transmitting station with a wide-area transmission area that shares the same frequency carrier wave and a narrow-area transmitter station with a narrow-area transmission area, the transmission time is divided and the carrier waves of the same frequency are alternately transmitted. A voice information transmission method according to claim (1), which is used.