JPS6138670B2 - - Google Patents
Info
- Publication number
- JPS6138670B2 JPS6138670B2 JP53060817A JP6081778A JPS6138670B2 JP S6138670 B2 JPS6138670 B2 JP S6138670B2 JP 53060817 A JP53060817 A JP 53060817A JP 6081778 A JP6081778 A JP 6081778A JP S6138670 B2 JPS6138670 B2 JP S6138670B2
- Authority
- JP
- Japan
- Prior art keywords
- signal processing
- processing circuit
- transmission
- reception
- differential amplifier
- 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.)
- Expired
Links
- 230000005540 biological transmission Effects 0.000 claims description 29
- 101100484930 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) VPS41 gene Proteins 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000005669 field effect Effects 0.000 description 2
- 239000013256 coordination polymer Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Facsimiles In General (AREA)
- Facsimile Scanning Arrangements (AREA)
- Facsimile Transmission Control (AREA)
Description
【発明の詳細な説明】
本発明はフアクシミリ装置に関するものであ
る。フアクシミリ装置においては、第１ａ図に示
すように、送信しようとする原稿OPの画像を光
学走査して画像信号を得る画像読取装置１、画像
信号を送信信号として増幅又は変換する読取信号
処理回路２、受信信号を記録に適した信号に増幅
又は復号する受信信号処理回路５、コピーCPを
得る記録装置６、および送信信号を送受信ライン
に送出し、また送受信ラインから到来する信号を
受信信号処理回路５に与える送受切換回路３が備
わつている。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a facsimile device. As shown in FIG. 1a, the facsimile device includes an image reading device 1 that optically scans the image of the document OP to be transmitted to obtain an image signal, and a read signal processing circuit 2 that amplifies or converts the image signal as a transmission signal. , a reception signal processing circuit 5 that amplifies or decodes the reception signal into a signal suitable for recording, a recording device 6 that obtains a copy CP, and a reception signal processing circuit that sends the transmission signal to the transmission and reception line and processes the signal arriving from the transmission and reception line. 5 is provided with a transmission/reception switching circuit 3.
第１ｂ図および第１ｃ図に従来の送受切換回路
３の構成を示す。電話などの音声帯域の送受信号
では、第１ｂ図に示すようにハイブリツドトラン
スHTRが用いられ、２線―４線変換器が構成さ
れている。映像信号のような広帯域信号やベース
バンド信号では、第１ｃ図に示すように差動増幅
器DA１〜DA３とレベル設定器PFを用いて、差
動増幅器DA３のプラス、マイナス入力端の信号
を同相にして受信信号処理回路５への自機送信信
号の印加を阻止している。このように従来におい
ては、送受切換回路３は送受信ラインに対して読
取信号処理回路２の出力端又は受信信号処理回路
５の入力端を選択的に接続するに留まり、自機の
読取信号を記録装置６に与える接続、すなわち複
写記録の接続をすることができない。 FIGS. 1b and 1c show the configuration of a conventional transmission/reception switching circuit 3. FIG. For transmitting and receiving signals in the voice band of telephones and the like, a hybrid transformer HTR is used, as shown in FIG. 1b, and a 2-wire to 4-wire converter is configured. For wideband signals such as video signals or baseband signals, the signals at the plus and minus input terminals of differential amplifier DA3 are brought into phase using differential amplifiers DA1 to DA3 and level setting device PF, as shown in Figure 1c. This prevents the application of the self-transmission signal to the received signal processing circuit 5. In this way, conventionally, the transmission/reception switching circuit 3 only selectively connects the output terminal of the read signal processing circuit 2 or the input terminal of the received signal processing circuit 5 to the transmission/reception line, and records the read signal of its own device. It is not possible to make a connection to the device 6, ie, a copy record connection.
本発明は自機の画像読取信号を記録再生しうる
フアクシミリ装置、すなわち、複写モードで動作
しうるフアクシミリ装置を提供することを第１の
目的とする。 A first object of the present invention is to provide a facsimile device that can record and reproduce its own image reading signals, that is, a facsimile device that can operate in a copy mode.
本発明の第２の目的は、他機へ画像信号を送出
するときには自機の画像信号を送受信ラインに送
出するが自機では受信せず、かつ他機からの画像
信号は受信する全２重のフアクシミリ装置に複写
機能を持たせることである。 The second object of the present invention is to provide a full-duplex system in which when transmitting an image signal to another device, the image signal of the device itself is sent to the transmission/reception line but is not received by the device itself, and the image signal from the other device is received. The goal is to provide a facsimile machine with a copying function.
本発明の第３の目的は、従来のフアクシミリ装
置の主要部に格別に変更をもたらすことなく、そ
れに複写機能を持たせることにある。 A third object of the present invention is to provide a conventional facsimile machine with a copying function without making any particular changes to its main parts.
本発明の第４の目的は、フアクシミリ装置に複
写機能をもたせるための、構成が簡単であつてし
かもフアクシミリ装置に簡単に装着しうる送受切
換回路を提供することである。 A fourth object of the present invention is to provide a transmission/reception switching circuit which has a simple configuration and can be easily installed in a facsimile machine in order to provide the facsimile machine with a copying function.
上記目的を達成するために本発明においては、
送受切換回路を、送信モードにおいて読取信号処
理回路の出力を送受信ラインに接続し、受信モー
ドにおいて受信信号を受信信号処理回路に接続
し、かつ複写モードにおいて読取信号処理回路の
出力を受信信号処理回路に接続する構成とする。
このようにすることにより、すでに存在する画像
読取装置、読取信号処理回路、受信信号処理回路
および記録装置に格別に手を加える必要はなく、
フアクシミリ装置に複写スタートボタンを設置し
て、この複写スタートボタンを押下したときにフ
アクシミリ装置を送信および受信動作とし、かつ
送受切換回路を複写モードに設定するようにすれ
ばよい。 In order to achieve the above object, in the present invention,
The transmission/reception switching circuit connects the output of the read signal processing circuit to the transmission/reception line in the transmission mode, connects the received signal to the reception signal processing circuit in the reception mode, and connects the output of the read signal processing circuit to the reception signal processing circuit in the copy mode. The configuration is to connect to
By doing this, there is no need to make special changes to the existing image reading device, read signal processing circuit, received signal processing circuit, and recording device.
A copy start button may be installed in the facsimile device, and when the copy start button is pressed, the facsimile device is set to transmit and receive operations, and the transmission/reception switching circuit is set to copy mode.
第２図に本発明の一実施例を示す。第２図にお
いてFET１はインピーダンス変換器として用い
た電界効果型トランジスタ（以下単にFETと称
する）であり、このFET１は送信モードおよび
受信モードにおいて概略零のインピーダンスとさ
れ、複写モードにおいて概略無限大のインピーダ
ンスとされる。したがつて送信モードにおいては
読取信号処理回路２からの送信信号は差動増幅器
DA１で増幅されて送受信ラインに送出される
が、差動増幅器DA２で増幅された送信信号は差
動増幅器DA３に入力されるが差動増幅器DA１の
出力信号と同相であるため、差動増幅器DA３の
出力端には信号が現われない。受信モードにおい
ては送受信端に到来する信号（受信信号）は差動
増幅器DA３で増幅されて受信信号処理回路５に
与えられる。複写モードのときには、FET１が
無限大のインピーダンスであるため、差動増幅器
DA１で増幅された画像信号（送信信号）が差動
増幅器DA３で極性反転されて受信信号処理回路
５に与えられ、記録装置６により記録がおこなわ
れる。 FIG. 2 shows an embodiment of the present invention. In Fig. 2, FET1 is a field effect transistor (hereinafter simply referred to as FET) used as an impedance converter, and this FET1 has approximately zero impedance in transmission mode and reception mode, and approximately infinite impedance in copy mode. It is said that Therefore, in the transmission mode, the transmission signal from the read signal processing circuit 2 is transmitted through the differential amplifier.
The transmission signal is amplified by DA1 and sent to the transmission/reception line, but the transmission signal amplified by differential amplifier DA2 is input to differential amplifier DA3, but since it is in phase with the output signal of differential amplifier DA1, differential amplifier DA3 No signal appears at the output terminal. In the reception mode, a signal (reception signal) arriving at the transmitter/receiver end is amplified by the differential amplifier DA3 and provided to the reception signal processing circuit 5. In copy mode, FET1 has infinite impedance, so the differential amplifier
The image signal (transmission signal) amplified by DA1 has its polarity inverted by differential amplifier DA3, is applied to received signal processing circuit 5, and is recorded by recording device 6.
第３図に本発明の他の実施例を示す。この実施
例においては、差動増幅器DA１とDA２の出力が
差動増幅器DA３の入力端に印加され、差動増幅
器DA３の出力が送受信端４および第２の電界効
果型トランジスタFET２を介して差動増幅器DA
４に印加され、差動増幅器DA４の出力が受信信
号処理回路５に与えられる構成になつている。こ
の例では、送信モードおよび受信モードにおい
て：
FET１のインピーダンスは概略無限大、
FET２のインピーダンスは概略零
とされ、複写モードにおいて：
FET１のインピーダンスは概略零、
FET２のインピーダンスは概略無限大
とされる。これにおいて、送信モードにおいては
差動増幅器DA４への２入力が同相であるため差
動増幅器DA４が出力を生じない。受信モードに
おいては、受信信号がFET２を通して差動増幅
器DA４に与えられ、そこで増幅されて受信信号
処理回路５に与えられる。複写モードにおいて
は、差動増幅器DA３の２入力が同相であるため
送受信端４へ出力がなく、かつFET２が非導通
であるため、差動増幅器DA４は送受信ラインか
ら遮断され、自機の画像信号が差動増幅器DA２
およびDA４で増幅されて受信信号処理回路５に
与えられ、記録装置６により記録がおこなわれ
る。 FIG. 3 shows another embodiment of the invention. In this embodiment, the outputs of the differential amplifiers DA1 and DA2 are applied to the input terminal of the differential amplifier DA3, and the output of the differential amplifier DA3 is applied to the differential amplifier via the transmitting/receiving terminal 4 and the second field effect transistor FET2. amplifier DA
4, and the output of the differential amplifier DA4 is applied to the received signal processing circuit 5. In this example, in the transmission mode and the reception mode: The impedance of FET1 is approximately infinite, and the impedance of FET2 is approximately zero, and in the copy mode: The impedance of FET1 is approximately zero, and the impedance of FET2 is approximately infinite. In this case, in the transmission mode, the two inputs to the differential amplifier DA4 are in phase, so the differential amplifier DA4 does not produce an output. In the reception mode, the reception signal is applied to the differential amplifier DA4 through the FET 2, where it is amplified and applied to the reception signal processing circuit 5. In the copy mode, since the two inputs of the differential amplifier DA3 are in phase, there is no output to the transmitting/receiving end 4, and since FET2 is non-conducting, the differential amplifier DA4 is cut off from the transmitting/receiving line, and the image signal of the own machine is not output. is the differential amplifier DA2
The signal is then amplified by the DA 4 and provided to the received signal processing circuit 5, where it is recorded by the recording device 6.
以上の通り本発明においては、リレーやアナロ
グスイツチ等の高価な部品を使用せず、わずかの
FETなどの部品で、送信モード、受信モードお
よび複写モードの切換えをおこなうことができ
る。このような切換回路を装着したフアクシミリ
装置においては、自機の送出信号を自機で受信し
かつ記録するという複写動作をおこなうので、自
己フアクシミリの全機能を自己診断しうるという
利点がある。 As described above, the present invention does not use expensive parts such as relays or analog switches, and only a few
Components such as FETs can be used to switch between transmit mode, receive mode, and copy mode. A facsimile machine equipped with such a switching circuit performs a copying operation by receiving and recording its own transmission signal, and has the advantage of being able to self-diagnose all functions of the facsimile machine.
第１ａ図は従来のフアクシミリ装置の構成を示
すブロツク図、第１ｂ図および第１ｃ図はそれぞ
れその一部の構成を具体的に示す回路図である。
第２図および第３図は、それぞれ本発明の実施例
を示す回路図である。第２図および第３図は、そ
れぞれ本発明の実施例を示す回路図である。
なお、図中の同一符号は同一又は相当部分を示
す。１…画像読取装置、２…読取信号処理回路、
３…送受切換回路、４…送受信端、５…受信信号
処理回路、６…記録装置、HTR…ハイブリツド
トランス、DA１〜DA４…差動増幅器、PF…レ
ベル設定器。
FIG. 1a is a block diagram showing the structure of a conventional facsimile apparatus, and FIGS. 1b and 1c are circuit diagrams specifically showing the structure of a part thereof.
FIGS. 2 and 3 are circuit diagrams each showing an embodiment of the present invention. FIGS. 2 and 3 are circuit diagrams each showing an embodiment of the present invention. Note that the same reference numerals in the figures indicate the same or equivalent parts. 1... Image reading device, 2... Read signal processing circuit,
3... Transmission/reception switching circuit, 4... Transmitting/receiving end, 5... Reception signal processing circuit, 6... Recording device, HTR... Hybrid transformer, DA1 to DA4... Differential amplifier, PF... Level setter.
Claims (1)
回路、受信信号処理回路および記録装置を有する
フアクシミリ装置において、送受切換回路を、送
信モードにおいて前記読取信号処理回路の出力を
送受信ラインに接続し、受信モードにおいて受信
信号を前記受信信号処理回路に接続し、かつ複写
モードにおいて前記読取信号処理回路の出力を前
記受信信号処理回路に接続する構成としたことを
特徴とするフアクシミリ装置。 ２ 送受切換回路を、差動増幅器とインピーダン
ス変換器で構成した前記特許請求の範囲第１項記
載のフアクシミリ装置。[Scope of Claims] 1. In a facsimile device having an image reading device, a read signal processing circuit, a transmission/reception switching circuit, a reception signal processing circuit, and a recording device, the transmission/reception switching circuit is configured to transmit and receive the output of the read signal processing circuit in a transmission mode. A facsimile apparatus is connected to a line, connects a received signal to the received signal processing circuit in a reception mode, and connects an output of the read signal processing circuit to the received signal processing circuit in a copy mode. . 2. The facsimile apparatus according to claim 1, wherein the transmission/reception switching circuit includes a differential amplifier and an impedance converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6081778A JPS54152419A (en) | 1978-05-22 | 1978-05-22 | Facsimile equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6081778A JPS54152419A (en) | 1978-05-22 | 1978-05-22 | Facsimile equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54152419A JPS54152419A (en) | 1979-11-30 |
| JPS6138670B2 true JPS6138670B2 (en) | 1986-08-30 |
Family
ID=13153274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6081778A Granted JPS54152419A (en) | 1978-05-22 | 1978-05-22 | Facsimile equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54152419A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003101708A (en) * | 2001-09-20 | 2003-04-04 | Etsuzo Fukuda | Method and device for identifying transmitting source document and transmitted source document in facscimile |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0074719B1 (en) * | 1981-08-11 | 1986-03-12 | Xerox Corporation | Imaging device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5236905A (en) * | 1975-09-19 | 1977-03-22 | Hitachi Ltd | Facsimile |
| JPS5315015A (en) * | 1976-07-27 | 1978-02-10 | Casio Comput Co Ltd | Self-test system for transmission-reception combination type facsimile device |
-
1978
- 1978-05-22 JP JP6081778A patent/JPS54152419A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5236905A (en) * | 1975-09-19 | 1977-03-22 | Hitachi Ltd | Facsimile |
| JPS5315015A (en) * | 1976-07-27 | 1978-02-10 | Casio Comput Co Ltd | Self-test system for transmission-reception combination type facsimile device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003101708A (en) * | 2001-09-20 | 2003-04-04 | Etsuzo Fukuda | Method and device for identifying transmitting source document and transmitted source document in facscimile |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54152419A (en) | 1979-11-30 |
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