JPS5930298A - Digital sound recording and reproducing device - Google Patents
Digital sound recording and reproducing deviceInfo
- Publication number
- JPS5930298A JPS5930298A JP57140540A JP14054082A JPS5930298A JP S5930298 A JPS5930298 A JP S5930298A JP 57140540 A JP57140540 A JP 57140540A JP 14054082 A JP14054082 A JP 14054082A JP S5930298 A JPS5930298 A JP S5930298A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- section
- storage
- selective call
- mobile communication
- 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
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C27/00—Electric analogue stores, e.g. for storing instantaneous values
Abstract
Description
【発明の詳細な説明】
発明の技術分野
本発明は、移動通信装置に於て、受信した信号をディジ
タル信号として記憶し、再生要求で記憶内容を再生する
ディジタル録音再生装置に関するものである。TECHNICAL FIELD OF THE INVENTION The present invention relates to a digital recording/playback device for storing received signals as digital signals in a mobile communication device and playing back the stored contents upon a playback request.
従来技術と問題点
選択呼出信号により自動車等に搭載された所望の移動通
信装置を呼出して通信するシステムが広く採用されてお
り、その場合に、移動通信装置を搭載した自動車から下
りると、選択呼出しを受けても応答することができない
ばかりか、通信内容を聴取することができないものであ
る。そこで、移動通信装置に録音装置を付加し、留守番
電話と同様に通信内容を録音しておくことが提案されて
いる。その録音装置としては、テープレコーダが主とし
て用いられ、アナログ信号の音声信号を録音することに
なる。しかし、機械的に動作する部分が多いことにより
、障害の発生確率が高く、信頼性に乏しい欠点がある。Prior Art and Problems A system that calls and communicates with a desired mobile communication device mounted on a car or the like using a selective call signal has been widely adopted. Not only are they unable to respond even if they receive a message, but they are also unable to listen to the content of the communication. Therefore, it has been proposed to add a recording device to the mobile communication device and record the contents of the communication in the same way as an answering machine. As the recording device, a tape recorder is mainly used to record analog audio signals. However, since there are many mechanically moving parts, there is a high probability of failure and poor reliability.
発明の目的
本発明は、機械的な動作部分を有しないICメモリや磁
気バブルメモリ等の記憶部を用い、受信アナログ信号を
ディジタル信号に変換して記憶させ、移動通信装置の信
頼性を向上することを目的とするものである。以下実施
例について詳細に説明する。Purpose of the Invention The present invention improves the reliability of mobile communication devices by converting received analog signals into digital signals and storing them using a storage unit such as an IC memory or magnetic bubble memory that does not have mechanical moving parts. The purpose is to Examples will be described in detail below.
発明の実施例
図は本発明の実施例の要部ブロック図であり、受信部の
構成のみを示すものである。同図に於て、1はアンテナ
、2は復調部、3は選択呼出信号検出部、4は低周波増
幅部、5はスピーカ、6は再生制御部、7はアナログ信
号をディジクル信号に変換するAD変換部、8はfcメ
モリや磁気バブルメモリ等の機械的な動作部分が無い記
憶部、9は記憶部8から続出したディジタル信号をアナ
ログ信号に変換するDA変換部、1oは選択呼出表示部
、11は再生要求端子である。アンテナl、復調部21
選択呼出信号検出部3.低周波増幅部4及びスピーカ5
は通當の移動通信装置の受信部を構成するものであって
、復調部2は、混合器、中間周波増幅器、検波器等を含
むものとして示しており、アンテナ1で受信した信号を
復調、検波、し、出力信号aを選択呼出信号検出部3及
びAD変換部7に加えるものである。選択呼出信号検出
部3は自移動通信装置に割当てられたトーン信号等から
なる選択呼出信号を検出すると、検出信号すを再生制御
部6に、又検出信号Cを選択呼出表示部10に加え、且
つ低周波増幅部4に受信信号を加えるものである。以下
移動通信装置から扱者が離れたときに、選択呼出しされ
て受信信号の記憶を行う場合の動作について説明する。Embodiment of the Invention The figure is a block diagram of the main part of the embodiment of the invention, and only shows the configuration of the receiving section. In the figure, 1 is an antenna, 2 is a demodulation section, 3 is a selective call signal detection section, 4 is a low frequency amplification section, 5 is a speaker, 6 is a reproduction control section, and 7 is a converter for converting an analog signal into a digital signal. AD converter, 8 is a storage unit without mechanically operating parts such as fc memory or magnetic bubble memory, 9 is a DA converter that converts the digital signals successively output from the storage unit 8 into analog signals, 1o is a selection call display unit , 11 are playback request terminals. Antenna l, demodulator 21
Selective call signal detection section 3. Low frequency amplification section 4 and speaker 5
1 constitutes a receiving section of a typical mobile communication device, and a demodulating section 2 is shown as including a mixer, an intermediate frequency amplifier, a detector, etc., and demodulates the signal received by the antenna 1. Detection is performed, and the output signal a is applied to the selective call signal detection section 3 and the AD conversion section 7. When the selective call signal detection unit 3 detects a selective call signal consisting of a tone signal or the like assigned to the mobile communication device, it applies the detection signal C to the reproduction control unit 6 and the detection signal C to the selective call display unit 10. It also adds the received signal to the low frequency amplification section 4. The following describes the operation when a user is selectively called and stores a received signal when the user leaves the mobile communication device.
前述の如く選択呼出信号検出部3で選択呼出信号を検出
すると、再生制御部6は、AD変換部7と記憶部8匪に
制御信号e、fを加えて、AD変換部7で変換したディ
ジタル信号dを記憶部8に記憶させる。この場合の変換
は、例えばΔM等の情報量の圧縮によりディジタル信号
に変換することが好適であり、又無音状態の検出により
無音信号は記憶しないようにして記憶量の増大を図るこ
とができる。又記憶部8の記憶容量は有限であるから、
再生制御部6は記憶部8に記憶される情報量を監視する
手段を有し、時間監視、記憶部8のアドレス監視等の手
段を用いることができる。時間監視を行う場合は、検出
信号すにより起動される時間計数部を設け、記憶部8の
記憶容量に対応した時間の計数により、記憶動作停止信
号gを記憶部8に加え、それ以後の受信信号の記憶を停
止させることができる。又受信信号の監視により通信終
了を検出した番きも、記憶動作停止信号gを記憶部8に
加えて、雑音等が記憶されることを防止することができ
る。When the selective calling signal detecting section 3 detects the selective calling signal as described above, the playback control section 6 adds the control signals e and f to the AD converting section 7 and the storage section 8, and outputs the digital data converted by the AD converting section 7. The signal d is stored in the storage section 8. In this case, it is preferable to convert the signal into a digital signal by compressing the amount of information such as ΔM, and by detecting a silent state, it is possible to increase the storage capacity by not storing the silent signal. Also, since the storage capacity of the storage unit 8 is limited,
The reproduction control section 6 has means for monitoring the amount of information stored in the storage section 8, and can use means such as time monitoring and address monitoring of the storage section 8. In the case of time monitoring, a time counting section activated by the detection signal G is provided, and by counting the time corresponding to the storage capacity of the storage section 8, a storage operation stop signal g is added to the storage section 8. It is possible to stop storing signals. Also, when the end of communication is detected by monitoring the received signal, a storage operation stop signal g is added to the storage unit 8, thereby preventing noise and the like from being stored.
又選択呼出表示部10に選択呼出しされたことを表示さ
せておくことにより、移動通信装置に扱者が戻ったとき
、不在中着信を識別することができる。又は記憶部8に
受信信号を記憶した場合のみ表示させるようにすること
もできる。Furthermore, by displaying the fact that a selective call has been made on the selective call display unit 10, when the operator returns to the mobile communication device, it is possible to identify the incoming call during an absence. Alternatively, it is also possible to display the received signal only when it is stored in the storage unit 8.
扱者が戻ったとき、再生要求信号工1に図示しないスイ
ッチ等からの再生要求信号pを加えると、選択呼出表示
部10の表示はリセットされ、再生制御部6は、記憶部
8に再生制御信号りを加え、DA変換部9に制御信号i
を加える。それにより記憶部8から先に記憶された内容
が読出され、その続出信号jはDA変換部9によりアナ
ログ信号kに変換されて低周波増幅部4に加えられる。When the operator returns, when the operator applies a reproduction request signal p from a switch (not shown) to the reproduction request signal 1, the display on the selective call display section 10 is reset, and the reproduction control section 6 sends the reproduction control signal to the storage section 8. A control signal i is added to the DA converter 9.
Add. As a result, the previously stored contents are read out from the storage section 8, and the subsequent signal j is converted into an analog signal k by the DA conversion section 9 and applied to the low frequency amplification section 4.
移動通信装置には、送信部も設けられているものである
から、選択呼出信号を検出することにより、録音可の応
答信号を返送し、その応答信号を受信した送信側からの
通話内容の記憶を開始するように制御することもできる
。又記憶動作停止を、スケルチ回路の出力を利用して行
うこともできる。又送信側から通話終了信号を送出する
ことにより、その通話終了信号の検出で記憶動作を停止
させることもできる。又記憶部8の記憶容量の関係で前
述のように、通話中に記憶動作停止となる場合があるが
、そのとき送信側に記憶動作停止の情報をトーン信号等
で通知するようにすることも可能である。Since the mobile communication device is also equipped with a transmitter, by detecting the selective call signal, it returns a recordable response signal and stores the contents of the call from the transmitting side that received the response signal. It can also be controlled to start. Furthermore, the storage operation can also be stopped using the output of the squelch circuit. Furthermore, by sending a call end signal from the transmitting side, the storage operation can be stopped upon detection of the call end signal. Also, as mentioned above, due to the storage capacity of the storage unit 8, there are cases where the storage operation stops during a call, but in that case, the sending side may be notified of the storage operation stoppage using a tone signal or the like. It is possible.
前述の記憶動作を行わせるか否かの制御は、再生制御部
6を動作させるか否かで決るから、移動通信装置から離
れるとき、図示しないスイッチ等により再生制御部8を
動作可能状態とすれば良いことになる。従って通常の場
合は、選択呼出しが行われても、スピーカが駆動されて
通話が行われるが、記憶動作は行われないことになる。The control of whether or not to perform the above-mentioned storage operation is determined by whether or not the playback control unit 6 is operated, so when leaving the mobile communication device, the playback control unit 8 is enabled by a switch (not shown) or the like. That's a good thing. Therefore, in a normal case, even if a selective call is made, the speaker is driven and a call is made, but no storage operation is performed.
又記憶動作を行っているときは、低周波増幅部4の動作
を停止させて、スピーカ5の駆動を行わないようにする
こともできる。Furthermore, when a storage operation is being performed, the operation of the low frequency amplification section 4 can be stopped so that the speaker 5 is not driven.
発明の詳細
な説明したように、本発明は、移動通信装置に於て、I
Cメモリや磁気バブルメモリ等の機械的に動作する部分
を含まない記憶部8を設け、受信信号をディジタル信号
に変換して記憶し、再生要求により記憶内容を再生する
ものであり、機械的に動作する部分を有しないので、信
頼性を向上させることができる。又記憶部8は勿論のこ
と、AD変換部7.DA変換部9及び再生制御部6は集
積回路化が可能であるから、小型化することができる。DETAILED DESCRIPTION OF THE INVENTION As described above, the present invention provides
A storage unit 8 that does not include mechanically operating parts such as a C memory or a magnetic bubble memory is provided, and the received signal is converted into a digital signal and stored, and the stored content is reproduced upon a reproduction request. Since there are no moving parts, reliability can be improved. In addition to the storage section 8, the AD conversion section 7. Since the DA converter 9 and the playback controller 6 can be integrated into an integrated circuit, they can be miniaturized.
又記憶部8を取外し可能の構成とし、記憶内容を保存し
、且つ任意の位置で再生することも可能となる。Furthermore, the storage section 8 is configured to be removable, so that the stored contents can be saved and reproduced at any position.
図は本発明の実施例の要部ブロック図である。
1はアンテナ、2はffi調部、3は選択呼出信号検出
部、4は低周波増幅部、5はスピーカ、6は再生制御部
、7はAD変換部、8は記憶部、9はDA変換部、10
は選択呼出表示部、11は再生要求端子である。
特許出願人 富士通株式会社
代理人、弁理士 玉蟲久五部 外3名The figure is a block diagram of main parts of an embodiment of the present invention. 1 is an antenna, 2 is an FFI adjustment section, 3 is a selective call signal detection section, 4 is a low frequency amplification section, 5 is a speaker, 6 is a reproduction control section, 7 is an AD conversion section, 8 is a storage section, 9 is a DA conversion section Part, 10
1 is a selective call display section, and 11 is a reproduction request terminal. Patent applicant Fujitsu Ltd. agent, patent attorney Gobe Tamamushi and 3 others
Claims (1)
り通信を行う移動通信装置に於て、受信したアナログ信
号をディジタル信号に変換するAD変換部と、該AD変
換部で変換したディジタル。 信号を記憶する記憶部と、該記憶部の記憶内容を読出し
てアナログ信号に変換するDA変換部と、前記選択呼出
信号検出部で選択呼出信号を検出したとき前記AD変換
部で変換したディジタル信号を前記記憶部に記憶させ、
該記憶部の記憶容量に対応した信号量を記憶したとき及
び通信終了により記憶動作を停止させ、且つ再生要求に
より前記記憶部の記憶内容を読出して前記DA変換部で
アナログ信号に変換して再生動作を行う再生制御部とを
備えたことを特徴とするディジタル録音再生装置。[Claims] In a mobile communication device that performs communication by detecting a selective call signal in a selective call signal detection unit, an AD conversion unit that converts a received analog signal into a digital signal, and the AD conversion Digital converted by the department. a storage section that stores signals; a DA conversion section that reads out the stored contents of the storage section and converts it into an analog signal; and a digital signal converted by the AD conversion section when the selective call signal detection section detects a selective call signal. is stored in the storage unit,
Stopping the storage operation when a signal amount corresponding to the storage capacity of the storage unit is stored or upon completion of communication, and reading out the storage contents of the storage unit in response to a playback request, converting it into an analog signal by the DA conversion unit, and playing it back. A digital recording/playback device comprising: a playback control unit that performs operations.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57140540A JPS5930298A (en) | 1982-08-13 | 1982-08-13 | Digital sound recording and reproducing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57140540A JPS5930298A (en) | 1982-08-13 | 1982-08-13 | Digital sound recording and reproducing device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5930298A true JPS5930298A (en) | 1984-02-17 |
Family
ID=15271043
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP57140540A Pending JPS5930298A (en) | 1982-08-13 | 1982-08-13 | Digital sound recording and reproducing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5930298A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61120391A (en) * | 1984-11-16 | 1986-06-07 | Hitachi Ltd | Signal recording and reproducing device |
JPH0162145U (en) * | 1987-10-15 | 1989-04-20 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5680741A (en) * | 1979-12-06 | 1981-07-02 | Casio Comput Co Ltd | Electronic equipment with recording function |
JPS5792493A (en) * | 1980-11-28 | 1982-06-09 | Toshiba Corp | Information recorder |
-
1982
- 1982-08-13 JP JP57140540A patent/JPS5930298A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5680741A (en) * | 1979-12-06 | 1981-07-02 | Casio Comput Co Ltd | Electronic equipment with recording function |
JPS5792493A (en) * | 1980-11-28 | 1982-06-09 | Toshiba Corp | Information recorder |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61120391A (en) * | 1984-11-16 | 1986-06-07 | Hitachi Ltd | Signal recording and reproducing device |
JPH0162145U (en) * | 1987-10-15 | 1989-04-20 |
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