JPH04237287A - Cordless television telephone set - Google Patents
Cordless television telephone setInfo
- Publication number
- JPH04237287A JPH04237287A JP3019258A JP1925891A JPH04237287A JP H04237287 A JPH04237287 A JP H04237287A JP 3019258 A JP3019258 A JP 3019258A JP 1925891 A JP1925891 A JP 1925891A JP H04237287 A JPH04237287 A JP H04237287A
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- JP
- Japan
- Prior art keywords
- signal
- section
- still image
- image
- transmitting
- 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
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- 238000001514 detection method Methods 0.000 claims abstract description 12
- 230000005540 biological transmission Effects 0.000 abstract description 8
- 230000004044 response Effects 0.000 description 8
- 230000005236 sound signal Effects 0.000 description 3
- 238000012790 confirmation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010561 standard procedure Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は静止画テレビ電話装置に
係り、静止画信号および通話信号等を高周波信号に変換
し無線で送受信するものに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a still image video telephone device, and more particularly, to a still image video telephone device that converts still image signals, call signals, etc. into high frequency signals and transmits and receives them wirelessly.
【０００２】0002
【従来の技術】静止画信号を送受信し、表示された静止
画像を見ながら通話する従来の静止画テレビ電話装置で
は、カメラおよび表示部と電話回線との間は有線で結ば
れており、例えば、この装置を移動する必要が生じたよ
うな場合、移動できる範囲は接続コードの長さ等により
制限される。しかし、接続コードをむやみに長くすれば
移動を必要としない場合の邪魔になる。このため、静止
画テレビ電話装置を、近年普及の著しい「コードレス電
話」のように移動しながら使用できるようになれば便利
であることから、このような装置の出現が望まれていた
。2. Description of the Related Art In a conventional still image videophone device that transmits and receives still image signals and makes a call while viewing the displayed still image, the camera and display unit are connected to a telephone line by wire, for example. When it becomes necessary to move this device, the range of movement is limited by the length of the connection cord and other factors. However, if the connection cord is unnecessarily long, it will get in the way when movement is not required. For this reason, it would be convenient if a still image videophone device could be used while moving, like the "cordless telephones" that have become popular in recent years, and the emergence of such a device has been desired.
【０００３】0003
【発明が解決しようとする課題】本発明はこのような点
に鑑みなされたもので、静止画テレビ電話装置を固定部
と携帯部に分割して構成し、固定部と携帯部の間の静止
画信号および通話信号等を小電力の高周波信号に変換し
無線で送受信することにより、携帯部との間をコードレ
ス化し、移動可能な範囲を拡大可能にするコードレステ
レビ電話装置を提供するものである。[Problems to be Solved by the Invention] The present invention has been made in view of the above points, and it is an object of the present invention to configure a still image videophone device divided into a fixed part and a mobile part, and to provide a still image between the fixed part and the mobile part. The present invention provides a cordless videophone device that converts image signals, call signals, etc. into low-power high-frequency signals, and transmits and receives them wirelessly, thereby making communication between the device and a mobile device cordless and expanding the movable range. .
【０００４】0004
【課題を解決するための手段】本発明は上述の課題を解
決するため、電話回線等に接続され、所要の静止画信号
および通話信号により通話を行う静止画テレビ電話装置
において、電話回線等よりの静止画信号等の所要の高周
波信号への変換若しくは電話回線等に送出する静止画信
号等の高周波信号よりの復調を行う第１送・受信部と、
第１送・受信部を介し送・受信するためのチャンネルを
判別する空き回線判別部と、識別コードおよび通話要求
のコード等を識別する識別部と、前記第１送・受信部、
空き回線判別部および識別部を制御する第１制御部とで
なる固定部と、前記固定部よりの高周波信号を受信し静
止画信号等に復調し、前記固定部に送信するための静止
画信号等を所要の高周波信号に変換する第２送・受信部
と、第２送・受信部を介しての信号よりテレビ電話の静
止画信号を検出する静止画信号検出部と、静止画信号を
テレビジョン信号に復調し記憶する画像復調・記憶部と
、前記第２送・受信部よりの信号を電話機側より前記画
像復調・記憶部側に切替える回線切替部と、前記画像復
調・記憶部にて復調・記憶されたテレビジョン信号とテ
レビカメラ等よりの信号とを切替えるための画像切替部
と、画像切替部よりの信号を表示する表示部と、前記テ
レビカメラの撮像によるテレビジョン信号を記憶し所要
の静止画信号に変調する画像記憶・変調部と、前記静止
画信号検出部よりの信号にて回路切替部および画像切替
部を制御すると共に、画像記憶・変調部にて変調された
静止画信号を前記回線切替部で切替え、前記第２送・受
信部を介し送出するように制御する第２制御部とでなる
携帯部とで構成したコードレステレビ電話装置を提供す
るものである。[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention provides a still image videophone device that is connected to a telephone line or the like and makes a call using a required still image signal and a call signal. a first transmitting/receiving unit that converts a still image signal into a required high frequency signal or demodulates a high frequency signal such as a still image signal to be sent to a telephone line or the like;
an idle line discriminator for discriminating a channel for transmitting/receiving via the first transmitting/receiving section; an identifying section for identifying an identification code, a call request code, etc.; and the first transmitting/receiving section;
a fixed section consisting of a first control section that controls an idle line determination section and an identification section; and a still image signal for receiving a high frequency signal from the fixed section, demodulating it into a still image signal, etc., and transmitting it to the fixed section. a still image signal detection section that detects a still image signal of a videophone from a signal via the second transmitting and receiving section; an image demodulation/storage unit that demodulates and stores the signal from the second transmission/reception unit; a line switching unit that switches the signal from the second transmitting/receiving unit from the telephone side to the image demodulation/storage unit; and the image demodulation/storage unit. an image switching section for switching between the demodulated and stored television signal and a signal from a television camera, etc.; a display section for displaying the signal from the image switching section; and a display section for storing the television signal captured by the television camera. An image storage/modulation section that modulates the still image into a desired still image signal, and a circuit switching section and an image switching section that are controlled by signals from the still image signal detection section, and a still image modulated by the image storage/modulation section. The present invention provides a cordless video telephone device comprising a mobile unit and a second control unit that controls the signal to be switched by the line switching unit and transmitted through the second transmitting/receiving unit.
【０００５】[0005]
【作用】以上のように構成したので、本発明によるコー
ドレステレビ電話装置においては、電話回線等よりのテ
レビ電話の静止画信号は、コードレス電話の送受信用と
して設定された所要の高周波信号に変換され、固定部よ
り携帯部に送信される。携帯部にて復調された静止画信
号は表示部に表示される。テレビカメラの撮像によるテ
レビジョン信号は静止画信号に変調され、所要の高周波
信号に変換されて携帯部より固定部に送信され、固定部
にて静止画信号に復調され電話回線等に送出される。ま
た、通話信号も上記静止画信号と同様に信号処理され、
固定部と携帯部の間で送受信される。[Function] As configured as above, in the cordless videophone device according to the present invention, the still image signal of the videophone from the telephone line etc. is converted into the required high frequency signal set for transmission and reception of the cordless telephone. , is transmitted from the fixed unit to the mobile unit. The still image signal demodulated by the mobile unit is displayed on the display unit. A television signal captured by a television camera is modulated into a still image signal, converted into a required high-frequency signal, and transmitted from the mobile unit to a fixed unit, where it is demodulated into a still image signal and sent to a telephone line, etc. . In addition, the call signal is also processed in the same way as the still image signal,
Transmitted and received between the fixed part and the mobile part.
【０００６】[0006]
【実施例】以下、図面に基づいて本発明によるコードレ
ステレビ電話装置の実施例を詳細に説明する。図１は本
発明によるコードレステレビ電話装置の一実施例の要部
ブロック図である。図において、Ａは固定部、Ｂは携帯
部である。固定部Ａにおいて、１は入出力部で、電話回
線２等とで静止画信号若しくは通話信号等を入出力する
。３は送・受信部で、入出力部１を介し入力する電話回
線２等よりの静止画信号等をコードレス電話の送受信用
として設定された所要の高周波信号に変換し、アンテナ
４を介し携帯部Ｂに向け発信し、また、アンテナ４を介
し受信した携帯部Ｂよりの高周波信号を静止画信号若し
くは音声信号等に復調し、前記入出力部２を介し電話回
線２等に送出する。５は空き回線判別部で、電話回線２
よりの発呼若しくは携帯部Ｂよりの発呼に応じ通話チャ
ンネルの空きを判別し、接続のための信号を出力する。
６は識別部で、固定部Ｂよりの通話要求コード等を識別
する。７はメモリ部で、制御のためのプログラム等を記
憶する。８は制御部で、固定部Ａの各部を制御する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a cordless video telephone apparatus according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram of essential parts of an embodiment of a cordless video telephone device according to the present invention. In the figure, A is a fixed part and B is a portable part. In the fixed part A, reference numeral 1 denotes an input/output part which inputs and outputs still image signals, call signals, etc. to and from a telephone line 2 and the like. 3 is a transmitting/receiving unit which converts still image signals etc. from a telephone line 2 etc. inputted via the input/output unit 1 into a required high frequency signal set for transmitting/receiving a cordless telephone, and sends the signal to the mobile unit via an antenna 4. The high-frequency signal transmitted from the mobile unit B and received via the antenna 4 is demodulated into a still image signal, audio signal, etc., and sent to the telephone line 2 or the like via the input/output unit 2. 5 is an empty line discrimination unit, which indicates telephone line 2.
In response to a call from a caller or a call from the mobile unit B, the call channel is determined to be vacant and a signal for connection is output. Reference numeral 6 denotes an identification unit that identifies the call request code etc. from the fixed unit B. 7 is a memory unit that stores programs for control and the like. Reference numeral 8 denotes a control unit that controls each part of the fixed part A.
【０００７】携帯部Ｂにおいて、１１は送・受信部で、
アンテナ１２を介し固定部Ａよりの高周波信号を受信し
、静止画信号若しくは音声信号等に復調し、また、固定
部Ａに送信するための静止画信号若しくは音声信号を所
要の高周波信号に変換しアンテナ１２を介し送信する。
１３は静止画信号検出部で、静止画信号の先頭に設けら
れたＤＴＭＦ（多周波符号）信号と休止期間の組合せで
なる静止画識別信号等を検出する。１４は回線切替部で
、制御部１５を介し静止画信号検出部１３よりの信号に
より、電話機１６に接続されていた電話回線を画像復調
・記憶部１７に切替え接続する。画像復調・記憶部１７
は、入力する１７４８ヘルツ等に変調された画像情報信
号を、この画像情報信号の前に入力する制御用信号、す
なわち、フレーム同期信号および振幅較正信号等に基づ
いて信号処理し、表示部１９にて表示可能なテレビジョ
ン信号に復調し、１画面分を記憶する。１８は画像切替
部で、制御部１５を介し前記静止画信号検出部１３より
の信号により、画像復調・記憶部１７より読み出したテ
レビジョン信号に切替え、表示部１９に出力する。２０
はテレビカメラで、通話者等を撮像する。
２１は画像記憶・変調部で、テレビカメラ２０よりのテ
レビジョン信号を一旦記憶し、振幅位相変調方式（ＴＴ
Ｃ標準方式）等に基づいて、静止画識別信号、制御用信
号、そして画像情報信号の順に１７４８ヘルツ等の所要
の静止画信号に変調する。２２は送画操作部で、前記制
御部１５を介し回線切替部１４を切替え、前記画像記憶
・変調部２１より読み出した静止画信号を送・受信部１
１に送出する。２３はコード発生部で、通話チャンネル
の割当てを受けるための通話要求コードおよび自機の識
別コード等を発生する。In the mobile unit B, 11 is a transmitting/receiving unit;
It receives a high frequency signal from the fixed part A via the antenna 12, demodulates it into a still image signal or an audio signal, and also converts the still image signal or audio signal to the required high frequency signal to be transmitted to the fixed part A. Transmit via antenna 12. Reference numeral 13 denotes a still image signal detection unit that detects a still image identification signal, etc., which is a combination of a DTMF (multifrequency code) signal provided at the beginning of the still image signal and a pause period. Reference numeral 14 denotes a line switching unit which switches and connects the telephone line connected to the telephone 16 to the image demodulation/storage unit 17 in response to a signal from the still image signal detection unit 13 via the control unit 15. Image demodulation/storage unit 17
The input image information signal modulated to 1748 Hz or the like is processed based on control signals input before the image information signal, that is, a frame synchronization signal, an amplitude calibration signal, etc., and displayed on the display unit 19. The signal is demodulated into a television signal that can be displayed, and one screen worth of data is stored. Reference numeral 18 denotes an image switching section which switches to the television signal read out from the image demodulation/storage section 17 in response to a signal from the still image signal detection section 13 via the control section 15 and outputs it to the display section 19. 20
A television camera is used to image the person on the phone. 21 is an image storage/modulation unit which temporarily stores the television signal from the television camera 20 and converts it into an amplitude phase modulation system (TT
A still image identification signal, a control signal, and an image information signal are sequentially modulated into a required still image signal such as 1748 Hz based on the C standard system). Reference numeral 22 denotes an image sending operation unit which switches the line switching unit 14 via the control unit 15 and transmits the still image signal read from the image storage/modulation unit 21 to the sending/receiving unit 1.
Send to 1. Reference numeral 23 denotes a code generation unit that generates a call request code for receiving assignment of a call channel, an identification code of the own machine, and the like.
【０００８】次に、本発明によるコードレステレビ電話
装置の動作を説明する。最初に、静止画の受信の場合に
ついて説明する。電話回線２より固定部Ａの入出力部１
に呼出信号が入力する。この信号に応じ、制御部８を介
し、空き回線判別部５によりコードレス電話の送受信用
として設定されている通話チャンネルより空き回線を判
別し、制御部８を介し送・受信部３により、前記呼出信
号を前記空き回線の、例えば、３８０ メガヘルツ（Ｍ
Ｈｚ）帯の高周波信号に変換し、アンテナ４より発信す
る。この高周波信号は携帯部Ｂのアンテナ１２を介し送
・受信部１１により受信され、呼出信号に復調され、回
線切替部１４を経て電話機１６に伝送されベルを鳴らす
。電話機１６のオフフックにより、制御部１５を介しコ
ード発生部２３にて自携帯部の識別コードを出力し、送
・受信部１１により前記空き回線の、例えば、２５０Ｍ
Ｈｚ帯の高周波信号に変換しアンテナ１２より発信する
。この高周波信号は固定部Ａのアンテナ４を介し送・受
信部３により受信・復調され、制御部６を介し識別部６
により所定のコードと識別され、これにより、固定部Ａ
と携帯部Ｂ間で静止画信号等の送受信が可能な状態とな
り、制御部８を介し入出力部１より応答信号を電話回線
２に送出する。Next, the operation of the cordless video telephone device according to the present invention will be explained. First, the case of receiving a still image will be explained. Input/output section 1 of fixed section A from telephone line 2
A call signal is input to the In response to this signal, via the control unit 8, the idle line discriminating unit 5 discriminates an idle line from the call channel set for transmitting and receiving the cordless telephone, and the transmitting/receiving unit 3 via the control unit 8 For example, 380 MHz (M
Hz) band and transmits it from the antenna 4. This high frequency signal is received by the transmitter/receiver section 11 via the antenna 12 of the mobile section B, demodulated into a calling signal, transmitted to the telephone set 16 via the line switching section 14, and rings the bell. When the telephone 16 goes off-hook, the code generating section 23 outputs the identification code of the own mobile section via the control section 15, and the transmitting/receiving section 11 outputs the identification code of the idle line, for example, 250M.
It is converted into a high frequency signal in the Hz band and transmitted from the antenna 12. This high frequency signal is received and demodulated by the transmitting/receiving section 3 via the antenna 4 of the fixed section A, and then sent to the identifying section 6 via the control section 6.
is identified as a predetermined code, and as a result, the fixed part A
It becomes possible to transmit and receive still image signals and the like between the mobile unit B and the mobile unit B, and a response signal is sent to the telephone line 2 from the input/output unit 1 via the control unit 8.
【０００９】前記応答信号に応じ電話回線２より入力し
た静止画信号は、送・受信部３で前記３８０ＭＨｚ帯の
高周波信号に変換され、アンテナ４およびアンテナ１２
を経て送・受信部１１で受信され、静止画信号に復調さ
れる。そして、この静止画信号の先頭に設けられている
静止画識別信号を静止画識別信号検出部１３で検出する
。この検出信号に基づき制御部１５を介し回線切替部１
４を作動させ、回線の切替えを行い、前記静止画信号を
画像復調・記憶部１７に入力する。画像記憶・復調部１
７は、入力する静止画信号の、前記静止画識別信号に次
いで入力する制御用の信号に基づいて画像情報信号の処
理を行い、テレビジョン信号に復調し１画面分を記憶す
る。記憶された静止画信号は、静止画信号検出部１３よ
りの信号に基づき作動する画像切替部１８を介して表示
部１９に入力し、画像を表示する。前記ＴＴＣ標準方式
による静止画信号の伝送は白黒画像１画面分の場合で約
６秒を要するため、この間、電話機１６は回線から切り
離される。静止画信号の受信が終了すれば回線切替部１
４により回線を電話機１６側に切替えるので、通話者は
表示部１９に表示された静止画を見ながら通話すること
ができる。この表示は、図示しない画像切替えボタン等
を操作し前記画像切替部１６の切替えを行うまで、前記
画像復調・記憶部１７より繰り返し読み出されるテレビ
ジョン信号の静止画を表示する。The still image signal input from the telephone line 2 in response to the response signal is converted into a high frequency signal in the 380 MHz band by the transmitting/receiving section 3, and then sent to the antenna 4 and the antenna 12.
The signal is then received by the transmitting/receiving section 11 and demodulated into a still image signal. Then, the still image identification signal provided at the beginning of this still image signal is detected by the still image identification signal detection section 13. Based on this detection signal, the line switching unit 1
4 is activated, the line is switched, and the still image signal is input to the image demodulation/storage section 17. Image storage/demodulation section 1
7 processes the image information signal of the input still image signal based on a control signal inputted next to the still image identification signal, demodulates it into a television signal, and stores one screen worth of signal. The stored still image signal is input to the display section 19 via the image switching section 18 that operates based on the signal from the still image signal detection section 13, and the image is displayed. Transmission of still image signals according to the TTC standard method requires approximately 6 seconds for one screen of black and white images, and during this time the telephone 16 is disconnected from the line. When the reception of the still image signal is completed, the line switching unit 1
4, the line is switched to the telephone 16 side, so the caller can talk while viewing the still image displayed on the display section 19. This display displays a still image of the television signal that is repeatedly read out from the image demodulation/storage section 17 until the image switching section 16 is switched by operating an image switching button (not shown) or the like.
【００１０】通話者の静止画を送信する場合、前記画像
切替えボタン等を操作し、画像切替部１８を作動させ、
カメラ２０で撮像した通話者の画像を表示部１９に表示
する。
なお、前記画像切替えボタンを再度操作すれば、表示部
１９の画面は前回の画面に戻る。さて、表示部１９に表
示された自分等の画像を確かめ、図示しない画像確認ボ
タン等を押す。これにより、この時のカメラ２０よりの
映像信号が画像記憶・変調部２１に１画面分記憶される
。この記憶は、再度の画像確認ボタン操作でクリアされ
、新たな画像の映像信号に置き換えられる。この映像信
号を通話の相手方に送信するには送画操作部２２を操作
する。この操作により制御部１５を介し回線切替部１４
が作動し、回線を画像記憶・変調部２１側に切替え、こ
の切替えに応じて作動する画像記憶・変調部２１よりの
ＴＴＣ標準方式に基づく静止画識別信号、制御用の信号
および画像情報信号の順に１７４８ヘルツ等の所定の静
止画信号に変調し、送・受信部１１を介し２５０ＭＨｚ
帯の高周波信号に変換し、アンテナ１２より固定部Ａに
向けて送信する。[0010] When transmitting a still image of the caller, operate the image switching button or the like to activate the image switching section 18;
An image of the caller captured by the camera 20 is displayed on the display unit 19. Note that if the image switching button is operated again, the screen on the display section 19 returns to the previous screen. Now, check the image of yourself or the like displayed on the display section 19 and press an image confirmation button (not shown). As a result, the video signal from the camera 20 at this time is stored in the image storage/modulation section 21 for one screen. This memory is cleared by operating the image confirmation button again and replaced with the video signal of the new image. In order to transmit this video signal to the other party of the call, the image sending operation unit 22 is operated. This operation causes the line switching unit 14 to
is activated, the line is switched to the image storage/modulation section 21 side, and the still image identification signal, control signal, and image information signal based on the TTC standard method are output from the image storage/modulation section 21 that operates in response to this switching. The signal is sequentially modulated into a predetermined still image signal of 1748 Hz, etc., and transmitted through the transmitting/receiving section 11 to a 250 MHz signal.
The signal is converted into a high-frequency signal of the band, and is transmitted from the antenna 12 toward the fixed part A.
【００１１】次に、最初に携帯部Ｂより静止画を送信す
る場合について説明する。まず電話機１６をオフフック
する。これにより、コード発生部２３より携帯部Ｂの識
別コードおよび通話要求コードが出力し、前記同様送・
受信部１１を介し２５０ＭＨｚ帯の高周波信号に変換し
、固定部Ｂに送信する。固定部Ｂではこの識別コードを
識別部６にてメモリ部７より読み出したデータとの比較
で識別し、空き回線判別部５により空いている通話回線
を判別し、この回線を携帯部Ｂとの通話用に割当てる。
以降の動作は前記通話者の画像を送信する場合と同じで
あるので説明を省く。Next, the case where a still image is first transmitted from the portable unit B will be explained. First, the telephone 16 is taken off-hook. As a result, the code generation section 23 outputs the identification code and call request code of the mobile section B, and the same as above is sent.
It is converted into a high frequency signal in the 250 MHz band via the receiving section 11 and transmitted to the fixed section B. In the fixed part B, the identification part 6 identifies this identification code by comparing it with the data read out from the memory part 7, and the free line discrimination part 5 discriminates the free call line, and this line is connected to the mobile part B. Assigned for calls. The subsequent operations are the same as those for transmitting the image of the caller, so the explanation will be omitted.
【００１２】0012
【発明の効果】以上に説明したように、本発明によるコ
ードレステレビ電話装置によれば、画像表示部分、カメ
ラおよび電話機等を携帯部として電話回線に接続する固
定部と分離して構成し、携帯部と固定部との間で送受信
する静止画信号および通話信号を小電力の高周波信号に
変換し無線で送受信するものであるから、前記高周波信
号の送受信可能な距離であれば携帯部を任意に移動して
通話することができ、従来のテレビ電話のように通話す
る場所が限定されるという不自由さから開放され、用途
の拡大に役立つものである。As explained above, according to the cordless videophone device of the present invention, the image display portion, camera, telephone, etc. are configured as a portable portion separated from the fixed portion connected to the telephone line, and the Still image signals and telephone calls sent and received between the mobile unit and the fixed unit are converted into low-power high-frequency signals and transmitted and received wirelessly. This allows you to talk while moving, freeing you from the inconvenience of being limited to the places you can talk like with conventional videophones, and helping to expand the range of uses.
【図１】本発明によるコードレステレビ電話装置の一実
施例を示す要部ブロック図である。FIG. 1 is a block diagram of essential parts of an embodiment of a cordless video telephone device according to the present invention.
Ａ 固定部 Ｂ 携帯部 ２ 電話回線 ３ 送・受信部 ５ 空き回線判別部 ６ 識別部 ７ メモリ部 １１ 送・受信部 １３ 静止画信号検出部 １４ 回線切替部 １６ 電話機 １７ 画像復調・記憶部 １８ 画像切替部 １９ 表示部 ２０ カメラ ２１ 画像記憶・変調部 ２２ 送画操作部 ２３ コード発生部 A Fixed part B Mobile part 2 Telephone line 3 Transmission/reception section 5. Idle line determination unit 6 Identification part 7 Memory section 11 Transmission/reception section 13 Still image signal detection section 14 Line switching section 16 Telephone 17 Image demodulation/storage unit 18 Image switching section 19 Display section 20 Camera 21 Image storage/modulation section 22 Image sending operation section 23 Code generation section
Claims (1)
信号および通話信号により通話を行う静止画テレビ電話
装置において、電話回線等よりの静止画信号等の所要の
高周波信号への変換若しくは電話回線等に送出する静止
画信号等の高周波信号よりの復調を行う第１送・受信部
と、第１送・受信部を介し送・受信するためのチャンネ
ルを判別する空き回線判別部と、識別コードおよび通話
要求のコード等を識別する識別部と、前記第１送・受信
部、空き回線判別部および識別部を制御する第１制御部
とでなる固定部と、前記固定部よりの高周波信号を受信
し静止画信号等に復調し、前記固定部に送信するための
静止画信号等を所要の高周波信号に変換する第２送・受
信部と、第２送・受信部を介しての信号よりテレビ電話
の静止画信号を検出する静止画信号検出部と、静止画信
号をテレビジョン信号に復調し記憶する画像復調・記憶
部と、前記第２送・受信部よりの信号を電話機側より前
記画像復調・記憶部側に切替える回線切替部と、前記画
像復調・記憶部にて復調・記憶されたテレビジョン信号
とテレビカメラ等よりの信号とを切替えるための画像切
替部と、画像切替部よりの信号を表示する表示部と、前
記テレビカメラの撮像によるテレビジョン信号を記憶し
所要の静止画信号に変調する画像記憶・変調部と、前記
静止画信号検出部よりの信号にて回路切替部および画像
切替部を制御すると共に、画像記憶・変調部にて変調さ
れた静止画信号を前記回線切替部で切替え、前記第２送
・受信部を介し送出するように制御する第２制御部とで
なる携帯部とで構成したことを特徴とするコードレステ
レビ電話装置。Claim 1: A still image video telephone device that is connected to a telephone line or the like and performs a call using a required still image signal and a call signal, which converts a still image signal from the telephone line or the like into a required high frequency signal or makes a telephone call. a first transmitting/receiving section that demodulates a high frequency signal such as a still image signal to be sent to a line, etc.; an idle line determining section that determines a channel for transmitting/receiving via the first transmitting/receiving section; a fixed section including an identification section that identifies a code, a call request code, etc.; a first control section that controls the first transmitting/receiving section, the idle line discriminating section, and the identification section; and a high-frequency signal from the fixed section. a second transmitting/receiving section that receives the signal, demodulates it into a still image signal, etc., and converts the still image signal, etc. into a required high frequency signal to be transmitted to the fixed section; and a signal via the second transmitting/receiving section. an image demodulation/storage unit that demodulates the still image signal into a television signal and stores it, and a signal from the second transmitting/receiving unit from the telephone side. a line switching unit for switching to the image demodulation/storage unit side; an image switching unit for switching between the television signal demodulated and stored in the image demodulation/storage unit and a signal from a television camera or the like; and an image switching unit. an image storage/modulation section that stores the television signal captured by the television camera and modulates it into a required still image signal, and circuit switching based on the signal from the still image signal detection section. and an image switching section, and also controls the still image signal modulated by the image storage/modulation section to be switched by the line switching section and transmitted via the second transmitting/receiving section. 1. A cordless videophone device comprising: a mobile unit; and a mobile unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3019258A JPH04237287A (en) | 1991-01-21 | 1991-01-21 | Cordless television telephone set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3019258A JPH04237287A (en) | 1991-01-21 | 1991-01-21 | Cordless television telephone set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04237287A true JPH04237287A (en) | 1992-08-25 |
Family
ID=11994410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3019258A Pending JPH04237287A (en) | 1991-01-21 | 1991-01-21 | Cordless television telephone set |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04237287A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07193800A (en) * | 1993-12-27 | 1995-07-28 | Toshiba Corp | Communication conference system |
| EP0702490A1 (en) * | 1994-09-13 | 1996-03-20 | PHILIPS ELECTRONIQUE GRAND PUBLIC (Sigle: PHILIPS E.G.P.) | Cordless telephone equipped with an image processing device and a camera |
-
1991
- 1991-01-21 JP JP3019258A patent/JPH04237287A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07193800A (en) * | 1993-12-27 | 1995-07-28 | Toshiba Corp | Communication conference system |
| EP0702490A1 (en) * | 1994-09-13 | 1996-03-20 | PHILIPS ELECTRONIQUE GRAND PUBLIC (Sigle: PHILIPS E.G.P.) | Cordless telephone equipped with an image processing device and a camera |
| US5910815A (en) * | 1994-09-13 | 1999-06-08 | U.S. Philips Corporation | Telephone set |
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