JPS6328143A - Radio broadcasting system - Google Patents
Radio broadcasting systemInfo
- Publication number
- JPS6328143A JPS6328143A JP17218286A JP17218286A JPS6328143A JP S6328143 A JPS6328143 A JP S6328143A JP 17218286 A JP17218286 A JP 17218286A JP 17218286 A JP17218286 A JP 17218286A JP S6328143 A JPS6328143 A JP S6328143A
- Authority
- JP
- Japan
- Prior art keywords
- program
- broadcast wave
- information
- identification code
- listener
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005236 sound signal Effects 0.000 abstract description 8
- 230000005540 biological transmission Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 1
Landscapes
- Circuits Of Receivers In General (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は無線放送方式に関し、特に通勤電車内のような
限定された空間を対象として複数の番組を放送する無線
放送方式に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a wireless broadcasting system, and particularly to a wireless broadcasting system for broadcasting a plurality of programs to a limited space such as inside a commuter train.
無線放送はテレビジョン放送、ラジオ放送などに広く利
用され、通常−放送波で一つの番組を放送するが、−放
送波で二つ以上の番組を放送する多重放送も実用されて
いる。しかしなから、いずれも放送と同時に受信するリ
アルタイムの情報伝達形式が採用されている。Radio broadcasting is widely used for television broadcasting, radio broadcasting, etc., and usually one program is broadcast using a broadcast wave, but multiplex broadcasting is also in practical use where two or more programs are broadcast using a broadcast wave. However, all of them use a real-time information transmission format that is received at the same time as the broadcast.
無線放送の新しい利用方法の一つとして、通勤電車等の
車内で乗客に対して選択可能な多数の番゛組を提供する
サービスが考えられる。この場合、上述した従来の無線
放送方式のようなリアルタイムの情報伝達形式では、下
車１乗換などのため聴取中の番組を中途で放棄しなけれ
ばならない場合がしばしば発生するという問題点がある
。One possible new use of radio broadcasting is a service that provides passengers with a large number of selectable programs on board commuter trains. In this case, in a real-time information transmission format such as the above-mentioned conventional radio broadcasting system, there is a problem in that it is often necessary to abandon the program being listened to in the middle due to getting off and changing trains.
本発明の目的は、パケット伝送技術を採用して一定時間
単位の番組を短時間に短縮して放送し、これを受信側で
実時間に伸張して再生し聴取することにより上述の問題
点を解決し、通勤電車内等の新しい無線放送サービスに
有効に使用できる無線放送方式を提供することである。The purpose of the present invention is to solve the above-mentioned problems by using packet transmission technology to shorten and broadcast a program of a certain time unit into a short time, and expand it to real time on the receiving side for playback and listening. It is an object of the present invention to provide a wireless broadcasting method that can be used effectively for new wireless broadcasting services such as on commuter trains.
本発明の無線放送方式は、一定時間長の音声情報から成
る複数個の番組を符号化したのち速度変換してそれぞれ
異なる識別符号を有する高速データパケットに圧縮し時
分割多重化して一つの搬送波で送信する主放送波と、こ
の主放送波で送信される前記各番組の表題、概要を示す
番組案内を対応する前記識別符号の情報と共に音声情報
信号として順次送信する開放送波とを同時に送信し、受
信者が前記開放送波を受信復調して聴取した前記１
番組案内から希望する特定の番組を選択すると、受信機
は選択された前記特定の番組に対応する特定の識別符号
を有する前記高速データパケットを前記主放送波から選
択受信してメモリに蓄積し、前記メモリに蓄積された情
報を前記符号化の速度で読出して復号し音声情報として
再生するように構成されている。The wireless broadcasting system of the present invention encodes a plurality of programs consisting of audio information of a certain length, converts the speed, compresses them into high-speed data packets each having a different identification code, and time-division multiplexes them onto a single carrier wave. A main broadcast wave to be transmitted and an open broadcast wave to be transmitted sequentially as an audio information signal along with information on the corresponding identification code and a program guide indicating the title and outline of each program transmitted on the main broadcast wave. , the receiver receives and demodulates the open broadcast wave and listens to it.
When a desired specific program is selected from the program guide, the receiver selectively receives the high-speed data packet having a specific identification code corresponding to the selected specific program from the main broadcast wave and stores it in a memory; The information stored in the memory is read out at the encoding speed, decoded, and reproduced as audio information.
次に、実施例に基き図面を参照して本発明の詳細な説明
する。Next, the present invention will be described in detail based on embodiments and with reference to the drawings.
第１図は本発明の一実施例の各放送波の変調信号の構成
を示す信号構成図で、Ｆ、は主放送波変調信号、Ｆ２は
開放送波変調信号である。主放送波変調信号Ｆｌは、一
定時間長（例えば１５分）の音声放送番組を一定の符号
化速度（例えば６４ｋ ｂ ／ ｓ ）で符号化したの
ち高速データ符号（例えば１０ Ｍ ｂ ／ ｓ ）に
速度変換した番組情報ＡＡ。FIG. 1 is a signal configuration diagram showing the configuration of each broadcast wave modulation signal according to an embodiment of the present invention, where F is a main broadcast wave modulation signal and F2 is an open broadcast wave modulation signal. The main broadcast wave modulation signal Fl is obtained by encoding an audio broadcast program of a certain length (for example, 15 minutes) at a certain encoding speed (for example, 64 kb/s) and then converting it into a high-speed data code (for example, 10 Mb/s). Program information AA with speed conversion.
ＢＢ、ＣＣ・・・・・・に、それぞれ異なる識別符号ａ
１ｂ、ｃ・・・・・・を付加した高速データパケットを
配列して構成され、ＵＨＦ帯等の搬送波を変調して送信
される。一方、開放送波変調信号Ｆ２は、各番組の表題
または概要を示す番組案内のアナログ音声信号Ｖ４ 、
ＶＢ 、ＶＣ・・・・・・に、対応する高速データパケ
ットの識別符号を音声帯域で伝送可能な低速符号ａ’
、ｂ’ 、ｃ“・・・・・・として付加した音声帯域信
号から成り、主放送波と同じＵＨＦ帯の他の搬送波を例
えばＦＭ変調して送信される。Different identification codes a for BB, CC...
It is constructed by arranging high-speed data packets to which 1b, c, . . . are added, and is transmitted by modulating a carrier wave such as a UHF band. On the other hand, the open broadcast wave modulation signal F2 is an analog audio signal V4 of a program guide indicating the title or summary of each program,
VB, VC..., low-speed code a' that can transmit the identification code of the corresponding high-speed data packet in the voice band
, b', c", etc., and is transmitted by, for example, FM modulating another carrier wave in the same UHF band as the main broadcast wave.
第２図は本発明に使用される装置の一実施例のブロック
図である。第２図において、参照番号１は主放送波ｆ１
を送信する主送信機、２は開放送波で２を送信する副送
信機で、両送信機の出力は合成器３で合成されたのち列
車内の天井部等に敷設された漏えい同軸ケーブル４から
各車両内に同時に送出される。これを受信する受信装置
は、主放送波ｆ、及び開放送波ｆ２の双方を受信復調す
る受信復調部５と、主メモリ６と、復号器７と、これら
を制御する制御部８と、イヤホーン９とで構成された携
帯型受信機である。以下第１図を参照して受信動作を説
明する。FIG. 2 is a block diagram of one embodiment of the apparatus used in the present invention. In FIG. 2, reference number 1 is the main broadcast wave f1
2 is a main transmitter that transmits 2, and 2 is a sub-transmitter that transmits 2 using open broadcast waves.The outputs of both transmitters are combined in a combiner 3, and then leaked coaxial cable 4 installed on the ceiling of the train, etc. and simultaneously sent into each vehicle. The receiving device that receives this includes a receiving demodulator 5 that receives and demodulates both the main broadcast wave f and the open broadcast wave f2, a main memory 6, a decoder 7, a control unit 8 that controls these, and an earphone. This is a portable receiver consisting of 9. The reception operation will be explained below with reference to FIG.
受信者はまず受信復調部５を開放送波ｆ２の受信状態と
して番組案内を聴き、希望の番組のアナログ音声信号■
＾を聴取したときに選択キーを押す９選択キーが押され
ると、受信復調部５はアナログ音声信号ＶＡに続く識別
符号ａ′を検出して内部メモリに記憶したのち受信周波
数を主放送波ｆ１に変え、対応する識別符号ａを有する
高速データパケットの番組情報ＡＡを選択受信して主メ
モリ６に読込む。読込まれた情報は送信側の符号化速度
と同じ読出し速度で読出され、復号器７で復号して希望
の番組の音声情報が再生される。いま、符号化速度を６
４ ｋ ｂ ／ ｓとし、高速データパケットのデータ
速度を１０ Ｍ ｂ ／ ｓとすると、１５分間の番組
は約６秒で主メモリ６に読込まれ、主メモリ６は４Ｍｂ
のメモリ素子１５個で構成することができる。The receiver first listens to the program guide with the reception demodulator 5 open to receive the broadcast wave f2, and then listens to the analog audio signal of the desired program.
Press the selection key when you hear ^.9 When the selection key is pressed, the reception demodulator 5 detects the identification code a' following the analog audio signal VA, stores it in the internal memory, and then changes the reception frequency to the main broadcast wave f1. , the program information AA of the high-speed data packet having the corresponding identification code a is selectively received and read into the main memory 6. The read information is read out at the same reading speed as the encoding speed on the transmitting side, and decoded by the decoder 7 to reproduce the audio information of the desired program. Now, the encoding speed is set to 6.
4 kb/s and the data rate of high-speed data packets is 10 Mb/s, a 15-minute program will be read into the main memory 6 in about 6 seconds, and the main memory 6 will be 4 Mb/s.
It can be configured with 15 memory elements.
以上説明したように、番組案内を聴取して希望の番組を
選択すると短時間で主メモリに記憶されるので、その後
は下車１乗換等で車両から離れても聴取中の番組を途中
で中断することなく区切りまで継続して聴取することが
できる。As explained above, once you listen to the program guide and select your desired program, it will be stored in the main memory in a short time, so even if you leave the vehicle after getting off or changing trains, you will not be able to interrupt the program you are currently listening to. You can listen continuously until the end without worrying.
上述した第１図の実施例には、開放送波が１波で主放送
波と開放送波の各番組の送出時間は選択後直ちに番組情
報の読込みができるように関連させ、各番組案内の放送
時間長１ｏはすべて等しくて高速データパケット長１．
の約２倍であり、従って各高速データパケットの間には
空き時間のある場合を示しであるが、副放送波を２波と
して番組内容により大別して放送し、主放送波の空き時
間が無くなるように選定しても差支えない。又、各番組
案内の放送時間長を一定とせず任意とし、主放送波の各
高速データパケットの送出時間とは関連を持たせなくて
もよく、更に、一つの番組案内に対して複数の高速デー
タパケットを対応させて長時間番組を構成し、先行の高
速データパケットの後部に後続の高速データパケットの
識別符号を記憶させておき、受信機の主メモリに記憶し
た先行の番組情報の再生が終りに近すきこの識別符号を
読出すと、次の高速データパケットの番組情報を読込む
ように構成することも可能である。In the embodiment shown in FIG. 1 described above, there is one opening broadcast wave, and the transmission times of the main broadcast wave and each program of the opening broadcast wave are related so that the program information can be read immediately after selection, and each program guide is All broadcast time lengths 1o are equal and high speed data packet lengths 1.
This is about twice the number of broadcast waves, and therefore there is free time between each high-speed data packet.However, the sub-broadcast waves are divided into two waves and are broadcast roughly according to the program content, eliminating the free time of the main broadcast wave. There is no problem in selecting it as follows. In addition, the broadcast time length of each program guide is not fixed but can be arbitrary, and there is no need to have a relationship with the transmission time of each high-speed data packet of the main broadcast wave. A long program is constructed by associating data packets, and the identification code of the subsequent high-speed data packet is stored at the end of the preceding high-speed data packet, so that the preceding program information stored in the main memory of the receiver can be played back. It is also possible to configure so that when the identification code near the end is read, the program information of the next high-speed data packet is read.
又、上述の実施例では副放送波はアナログ音声信号でＦ
Ｍ変調されているものとして説明したが、アナログ音声
信号でなく ６４ ｋ ｂ ／ ｓでディジタル符号化
した音声情報信号であって、受信機側でこれを復号して
番組案内の音声出力を得るようにしてもよい。更に、副
放送波で番組案内のアナログ音声信号のあとに識別符号
を送出し、受信機でこの識別符号を検出して自動的に対
応する高速データパケットを選択受信するように説明し
たが、識別符号そのものを伝送するのではなく識別符号
に対応するチャネル番号等を音声で伝送し、受信者がそ
れに対応する番号の選択ボタンを押すようにしてもよい
。In addition, in the above embodiment, the sub broadcast wave is an analog audio signal.
Although we have explained that it is M-modulated, it is not an analog audio signal, but an audio information signal digitally encoded at 64 kb/s, and the receiver decodes this to obtain the audio output of the program guide. You may also do so. Furthermore, it was explained that an identification code is sent after the analog audio signal of the program guide on the sub-broadcast wave, and the receiver detects this identification code and automatically selects and receives the corresponding high-speed data packet. Instead of transmitting the code itself, a channel number or the like corresponding to the identification code may be transmitted by voice, and the recipient may press the selection button for the corresponding number.
以上詳細に説明したように、本発明の無線放送方式によ
れば、副放送波により番組の選択が容易にでき、選択し
た一定時間単位の番組を短時間に受信して記憶し、これ
を低速で読出して再生聴取できるため、通勤電車内等の
新しい無線放送サービスに使用すれば、番組の途中で下
車１乗換等により中断されることなく継続して聴取が可
能となる効果がある。As explained in detail above, according to the wireless broadcasting system of the present invention, it is possible to easily select a program using sub-broadcast waves, and the selected program of a fixed time unit is received and stored in a short time, and the program is transmitted at a low speed. Since the program can be read out and played back for listening, if it is used in a new radio broadcasting service such as on a commuter train, it has the effect of making it possible to listen to the program continuously without being interrupted by getting off and changing trains.
第１図は本発明の一実施例の各放送波の変調信号の構成
を示す信号構成図、第２図は本発明に使用される装置の
一実施例のブロック図である。
１・・・・・・主送信機、２・・・・・・副送信機、３
・・・・・・合成器、４・・・・・・漏えい同軸ケーブ
ル、５・・・・・・受信復調部、６・・・・・・主メモ
リ、７・・・・・・復号器、８・・・・・・制御部、９
・・・・・・イヤホーン。
＼ Ｎ
く くFIG. 1 is a signal configuration diagram showing the configuration of a modulated signal for each broadcast wave according to an embodiment of the present invention, and FIG. 2 is a block diagram of an embodiment of a device used in the present invention. 1... Main transmitter, 2... Sub transmitter, 3
......Synthesizer, 4...Leakage coaxial cable, 5...Reception demodulator, 6...Main memory, 7...Decoder , 8...control section, 9
······earphone. \N Ku Ku
Claims (1)
たのち速度変換してそれぞれ異なる識別符号を有する高
速データパケットに圧縮し時分割多重化して一つの搬送
波で送信する主放送波と、この主放送波で送信される前
記各番組の表題、概要を示す番組案内を対応する前記識
別符号の情報と共に音声情報信号として順次送信する副
放送波とを同時に送信し、受信者が前記副放送波を受信
復調して聴取した前記番組案内から希望する特定の番組
を選択すると、受信機は選択された前記特定の番組に対
応する特定の識別符号を有する前記高速データパケット
を前記主放送波から選択受信してメモリに蓄積し、前記
メモリに蓄積された情報を前記符号化の速度で読出して
復号し音声情報として再生することを特徴とする無線放
送方式。A main broadcast wave in which multiple programs consisting of audio information of a certain length of time are encoded, then speed-converted, compressed into high-speed data packets each having a different identification code, time-division multiplexed, and transmitted on a single carrier wave; A program guide showing the title and summary of each program transmitted on the main broadcast wave is simultaneously transmitted along with information on the corresponding identification code, and a sub broadcast wave is sequentially transmitted as an audio information signal, and the receiver receives the sub broadcast wave. When a desired specific program is selected from the program guide that has been received and demodulated and listened to, the receiver selects the high-speed data packet having a specific identification code corresponding to the selected specific program from the main broadcast wave. A radio broadcasting system characterized in that information is received and stored in a memory, and the information stored in the memory is read out at the encoding speed, decoded, and reproduced as audio information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17218286A JPS6328143A (en) | 1986-07-21 | 1986-07-21 | Radio broadcasting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17218286A JPS6328143A (en) | 1986-07-21 | 1986-07-21 | Radio broadcasting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6328143A true JPS6328143A (en) | 1988-02-05 |
Family
ID=15937095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17218286A Pending JPS6328143A (en) | 1986-07-21 | 1986-07-21 | Radio broadcasting system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6328143A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6952315B2 (en) | 1990-07-06 | 2005-10-04 | Hitachi, Ltd. | Digital information recording/reproducing apparatus |
-
1986
- 1986-07-21 JP JP17218286A patent/JPS6328143A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6952315B2 (en) | 1990-07-06 | 2005-10-04 | Hitachi, Ltd. | Digital information recording/reproducing apparatus |
| US7012769B2 (en) | 1990-07-06 | 2006-03-14 | Hitachi, Ltd. | Digital information recording/reproducing apparatus |
| US7027240B2 (en) | 1990-07-06 | 2006-04-11 | Hitachi, Ltd. | Digital information recording/reproducing method and apparatus |
| US7259926B2 (en) | 1990-07-06 | 2007-08-21 | Hitachi, Ltd. | Digital information recording/reproducing apparatus |
| US7286310B2 (en) | 1990-07-06 | 2007-10-23 | Hitachi, Ltd. | Apparatus for receiving compressed digital information |
| US7808733B2 (en) | 1990-07-06 | 2010-10-05 | Hitachi Consumer Electronics Co., Ltd. | Method and apparatus for transmitting and receiving digital video and audio information |
| US7859777B2 (en) | 1990-07-06 | 2010-12-28 | Hitachi Consumer Electronics Co., Ltd. | Method and apparatus for transmitting and receiving digital video and audio information |
| US7952823B2 (en) | 1990-07-06 | 2011-05-31 | Hitachi Consumer Electronics Co., Ltd. | Method for transmitting digital audio and video information |
| US8009375B2 (en) | 1990-07-06 | 2011-08-30 | Hitachi Consumer Electronics Co., Ltd. | Apparatus and method for receiving and recording digital information |
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