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WO2003013107A1 - Appareil telephonique a fonction visiophone - Google Patents

Appareil telephonique a fonction visiophone Download PDF

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Publication number
WO2003013107A1
WO2003013107A1 PCT/JP2002/004920 JP0204920W WO03013107A1 WO 2003013107 A1 WO2003013107 A1 WO 2003013107A1 JP 0204920 W JP0204920 W JP 0204920W WO 03013107 A1 WO03013107 A1 WO 03013107A1
Authority
WO
WIPO (PCT)
Prior art keywords
call
videophone
line connection
video
telephone
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.)
Ceased
Application number
PCT/JP2002/004920
Other languages
English (en)
Japanese (ja)
Inventor
Yasuhiro Kikuchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of WO2003013107A1 publication Critical patent/WO2003013107A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1069—Session establishment or de-establishment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/725—Cordless telephones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
    • H04M3/567—Multimedia conference systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/14—Systems for two-way working
    • H04N7/141—Systems for two-way working between two video terminals, e.g. videophone
    • H04N7/147—Communication arrangements, e.g. identifying the communication as a video-communication, intermediate storage of the signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/14—Systems for two-way working
    • H04N7/141—Systems for two-way working between two video terminals, e.g. videophone
    • H04N7/142—Constructional details of the terminal equipment, e.g. arrangements of the camera and the display
    • H04N2007/145—Handheld terminals

Definitions

  • the present invention relates to a telephone with a television function, which has a camera and can be used as a television telephone.
  • Videophones are already well-known, but conventional videophones are fixed-installed telephones.To transmit and receive enormous amounts of information, such as images captured by cameras and audio, to and from the other party, videophones must be driven. However, there is a problem that both the transmitting side and the receiving side need to secure the line and perform various preparation operations. For this reason, conventional television telephones have not yet reached general use.
  • the above object is to provide a telephone with a video telephone function capable of transmitting video information together with audio information to a partner, a means for making a line connection for a video telephone call, and automatically making a voice call when the line connection cannot be established.
  • This is achieved by providing a means for making a line connection for use. With this configuration, even if the line connection as a videophone fails, the line connection with voice only is automatically performed, so the user does not need to make a call for voice communication and can easily communicate with the other party. You can talk.
  • the above object is also achieved in a telephone having a video telephone function capable of transmitting video information together with audio information to a remote party, a first means for performing a line connection for a video telephone call, and a process to be performed when the line connection becomes impossible.
  • the user can set beforehand whether to disconnect if no videophone call can be made or to make a line connection by voice call. Can be provided.
  • the user can make settings only by a simple operation of “selection”, and the use of the telephone with the videophone function is improved.
  • detecting means for detecting whether the incoming call is an incoming call as a videophone call or an incoming call as a voice call, and performs a videophone call incoming process or a voice call incoming process according to the detection result of the detecting unit. It is characterized by making a videophone call or voice call. More preferably, in the above, two types of sounding members are provided as sounding members, and the sound source outputs a sound signal in response to two different key operations of the off-hook key for voice communication or the off-hook key for videophone communication. The sound member is switched.
  • the video when the other party sends a video signal together with the audio signal, the video can be displayed on the display unit, and when only the voice call is made, only the voice call can be made. Further, when two types of the receiver and the speaker are prepared as the sounding member, one of the receiver and the speaker can be selected by a key operation, and a hands-free call can be easily performed. ⁇ Brief description of drawings>
  • FIG. 1 is a schematic front view of a mobile phone with a videophone function according to a first embodiment of the present invention.
  • FIG. 2 is a schematic back view of the mobile phone with a videophone function according to the first embodiment of the present invention.
  • FIG. 3 is a functional block diagram of the mobile phone with a videophone function according to the first embodiment of the present invention.
  • FIG. 4 is a flowchart showing a procedure of a calling operation in the mobile phone with a videophone function according to the first embodiment of the present invention.
  • FIG. 5 is a flowchart showing a procedure of an incoming call operation in the mobile phone with a videophone function according to the first embodiment of the present invention.
  • FIG. 6 is a flowchart showing a processing procedure when an illustration image is sent by the mobile phone with a videophone function according to the first embodiment of the present invention.
  • FIG. 7 is a flowchart showing a procedure of a calling operation in the mobile phone with a videophone function according to the second embodiment of the present invention.
  • FIG. 8 is a flowchart showing a detailed procedure of a video call state selection process in the mobile phone with a video phone function according to the second embodiment of the present invention.
  • FIG. 9 is a flowchart showing a call state switching processing procedure in the mobile phone with a videophone function according to one embodiment of the present invention.
  • FIG. 10 is a flowchart showing a call state switching processing procedure in the mobile phone with a videophone function according to one embodiment of the present invention.
  • FIG. 11 is a flowchart showing a video switching processing procedure in the mobile phone with a videophone function according to one embodiment of the present invention.
  • FIG. 12 is a flowchart showing a video switching processing procedure in the mobile phone with a videophone function according to one embodiment of the present invention.
  • FIG. 13 is a diagram showing a setting state in the mobile phone with a videophone function according to one embodiment of the present invention.
  • 1 is a housing
  • 2 is a numeric keypad
  • 3 is a function key
  • 4 is a power on / off key
  • 5 is a videophone off-hook key
  • 6 is an audio off-hook key
  • 7 is a display unit
  • 8 is a display unit.
  • Camera part, 9 is a receiver, 10 is a microphone, 11 is a speaker, 12 is a sound hole, 15 is a battery hole, 15 is a battery pack, 16 is an antenna, 17 is an image codec, 1 8 is an audio processing unit, 19 is an ADZD A / A conversion unit, 20 is a storage unit, 21 is a central processing unit, 22 is a wireless unit, and 23 is an operation unit.
  • FIG. 1 and 2 are a front view and a rear view of a mobile phone with a videophone function according to a first embodiment of the present invention.
  • FIG. 3 is a functional block diagram of the mobile phone according to the first embodiment.
  • the mobile phone with a videophone function according to the first embodiment includes a numeric keypad 2 for inputting characters such as numbers from 0 to 9, hiragana, katakana, and alphabet on a surface of a housing 1 constituting the phone.
  • a telephone off-hook key 5 for performing a telephone call, a voice off-hook key 6 for making a call as a normal voice call, and the like, and a display unit 7 composed of a liquid crystal display and the like are provided.
  • the camera section 8 as a simple imaging device is mounted. Here, the camera section 8 is attached to the housing 1 so as to be rotatable in the direction of arrow A. At the upper and lower ends of the front surface of the housing 1, there are formed sound holes 12 and 13 facing the microphone 9 and the microphone 10 (see FIG. 3) provided inside the housing 1, respectively.
  • a sound hole 14 facing the spin force 11 provided inside the housing 1 is formed on the back surface of the housing 1.
  • a battery pack 15 as a power supply for a telephone is built in the lower half of the back of the camera.
  • An antenna 16 is attached to the upper end of the housing 1 so as to be freely inserted and removed.
  • an image codec unit 1 that encodes a video signal captured by the camera 8 and decodes the coded video signal is received inside the housing 1 as shown in FIG. 7 and an ADZD A / D converter 19 that converts the audio signal from the microphone 10 from analog to digital (AD) and converts the audio signal from the audio processor 18 from digital to analog (DA).
  • step 401 when the user inputs the telephone number of the other party from the numeric keypad 2, this telephone number is temporarily stored in the central processing unit 21 (step 4002). ).
  • step 4 03 When the user operates the videophone off-hook key 5 in step 4 03, the central processing unit 21 transmits the temporarily stored telephone number of the other party via the wireless unit 22, and The calling process is performed (step 404).
  • Step 404 When the outgoing call processing for this videophone (Step 404) is performed, it is next determined whether or not a line connection as a videophone is possible (Step 404). 5) If it is possible to connect the line as a videophone, go to step 410
  • the determination as to whether or not a line connection as a videophone in step 405 is possible can be easily made by judging from the electric field strength whether or not the telephone is within the line connection range as a videophone. it can.
  • the base station transmits a signal for calling the other party's telephone, it can be easily determined whether or not the signal for notifying the transmission is properly received.
  • the response signal is received by the radio unit 22 via the antenna 16 and input to the central processing unit 21.
  • the central processing unit 21 performs a call connection process (step 407), and can make a videophone call (step 408).
  • the video captured by the camera unit 8 is once displayed on the display unit 7 for confirmation, encoded by the video codec unit 17, and input to the central processing unit 21.
  • the audio signal from the microphone 10 is AD-converted by the 80/0 conversion unit 19, encoded by the audio processing unit 18, and multiplexed with the video signal input earlier by the central processing unit 21. And transmitted to the other side via the radio section 22 and antenna 16
  • the signal from the other party is received by the antenna 16 and the radio unit 22, separated into a video signal and an audio signal by the central processing unit 21, and the video signal is decoded by the video codec unit 17 and sent to the display unit 7.
  • the displayed audio signal is decoded by an audio processing unit 18, converted to an analog signal by an AD / DA conversion unit 19, and output from a speaker 11. This allows real-time video transmission and reception and voice conversations with the other party. If the user does not operate the videophone off-hook key 5 but operates the voice call off-hook key 6 in step 400, this operation is detected in step 409, and the central processing unit 21
  • the telephone number of the other party temporarily stored in the storage unit 20 is transmitted via the wireless unit 22 to perform a calling process for a voice call (step 410).
  • step 410 it is determined whether or not the line connection as a voice call is possible, and the line connection as a voice call is possible. If so, the process proceeds to step 4 12 .
  • the determination in step 4 11, that is, the determination as to whether or not the line connection as a voice call is possible, is based on whether or not the video telephone line connection as in step 4 05 is possible. Phone as well as There whether within or can be easily carried out by such as whether a signal to call the other party has been issued to the normal. If the other party answers in step 4 1 2, the response signal is received by the radio section 2 2 via the antenna 16 and input to the central processing section 21, so that the call connection processing (step 4 1 3) is performed.
  • the analog audio signal from the microphone 10 is converted into a digital signal by the AD / DA conversion unit 19, encoded by the audio processing unit 18 and processed by the central processing unit 21, the radio unit 22, It is transmitted to the other party via antenna 16.
  • the audio signal from the other party is received by the radio unit 22 via the antenna 16, input to the audio processing unit 18 via the central processing unit 21, decoded here, and further processed by the AD / DA
  • the signal is converted into an analog signal by the converter 19 and output from the receiver 9.
  • a normal voice call can be made with the called party (step 414). In steps 4 0 5 and 4 11, if it is determined that the video phone line connection is not possible and the voice call line connection is not possible, steps 4 10 and 4 are automatically performed.
  • the process proceeds to 04, where the voice call originating process and the videophone originating process are performed again. Then, in each of steps 411 and 405, it is determined whether or not a line connection as a voice call is possible, and whether or not a line connection as a videophone is possible. Go to 1, 2, 4 6 and if the other party answers, the call is connected (steps 4 13, 4 7 7), and a voice call with the other party or a video call It becomes possible (steps 414, 408). Next, the operation of the mobile phone with a videophone function on the receiving side will be described with reference to the flowchart shown in FIG.
  • step 501 the user who has received the incoming call melody or the like and knows the incoming call operates either the off-hook key 5 for videophone or the off-hook key 6 for voice. With this operation, the flow shifts to step 502, where it is determined whether or not a videophone call is received. If the call is a videophone call, the call processing for the videophone is performed (step 503), and the call connection processing is performed (step 504). Similarly, a videophone call is possible (step 505). If it is determined in step 502 that the incoming call is not a videophone call but a voice call, the process proceeds to step 506, where the incoming call processing as a voice call is performed, and Then, a call connection process (step 507) is performed.
  • the camera unit 8 is in operation
  • the video signal from the camera unit 8 is encoded by the image codec unit 17 and input to the central processing unit 21.
  • the audio signal from the microphone 10 is AD-converted by the AD / DA converter 19, encoded by the audio processor 18 and input to the central processor 21 as described above.
  • the encoded video signal from the camera section 8 is multiplexed with the encoded audio signal from the microphone 10 and a videophone call is made via the radio section 22 and the antenna 16. It is transmitted to the other party.
  • the signal from the other party making a videophone call is received by the radio unit 22 via the antenna 16 and separated into a video signal and an audio signal by the central processing unit 21.
  • the separated video signal is
  • the audio signal is decoded by the image codec unit 17 and displayed on the display unit 7.
  • the audio signal is decoded by the audio processing unit, converted to a digital signal by the AD / DA conversion unit 19, and input to the speed unit 11. Therefore, in this state, it is possible to make a videophone call with the other party who made the videophone call (step 505).
  • step 502 instead of receiving a videophone call,
  • the process proceeds to step 506, where an incoming call process for a voice call is performed.
  • a call connection process (step 507) is performed, and in this state, a voice signal from the other party is received by the radio unit 22 via the antenna 16, and is transmitted via the central processing unit.
  • the signal is decoded by the audio processing unit 18, DA converted by the AD / DA conversion unit 19, and input to the receiver 9.
  • the audio signal from the microphone 10 is AD-converted by an AD / DA conversion unit 19, encoded by an audio processing unit 18, and transmitted via a central processing unit 21, a radio unit 22, and an antenna 16.
  • a normal voice call can be made with the called party (step 508).
  • the connection is automatically switched to a line connection as a voice call.
  • FIG. 6 shows an embodiment in which a videophone call is performed using such illustrations, self-portraits, and other images. That is, in this embodiment, after the call connection processing 407 and 504 shown in FIGS. 4 and 5, as a next step, whether or not the video from the camera unit 8 may be transmitted is determined.
  • a step 601 for determining whether the so-called camera video transmission ON setting is stored in the storage unit 20 is provided. If the setting is on, the process proceeds to step 602 to output the video taken by the camera unit 8. If the setting is not on, the process proceeds to step 605 to store the image. Output the illustration, self-portrait, and other images stored in section 8 and display one of them on the display section 7 (step 603) and transmit (step 604) It is composed. Therefore, in this case, the camera image transmission ON / OFF is set in the storage unit 20 in advance, so that the image from the camera unit 8 is turned ON when the ON is set, and the image from the camera unit 8 is turned OFF when the ON is set. The video stored in the storage unit 20 can be automatically switched and transmitted.
  • the other party Since the video is transmitted to the other party, the other party has the advantage of being able to know that the videophone communication has been completed and responding as a videophone call.
  • step 701 when the user inputs the telephone number of the other party using the numeric keypad 2, this telephone number is temporarily stored in the central processing unit 21 (step 702). ).
  • step 703 if either the off-hook key 5 for videophone or the off-hook key 6 for voice is pressed (step 703), the central processing unit 21 temporarily stores the data by this operation.
  • the telephone number of the called party is transmitted via the radio section 22 and a calling process for a videophone is performed (step 704).
  • Step 704 After the outgoing call processing for the videophone (Step 704) is performed, it is next determined whether the line connection as the videophone is possible (Step 705), and If the line connection is possible, proceed to step 706. If the other party answers in step 706, the response signal is received by the radio section 22 via the antenna 16 and input to the central processing section 21, so that the call connection processing (step 707) is performed here. . Thereafter, in the same manner as described above (step 408), a call as a videophone can be made (step 708).
  • step 705 when it is determined that the line connection as a videophone is not possible, the process proceeds to step 709, a calling process for a voice call is performed, and if the other party answers in step 710, Then, a call connection process (step 711) is performed, and a voice call (step 712) becomes possible in the same manner as described above (step 414).
  • FIG. 8 is a flowchart showing a detailed processing procedure of the call connection processing (step 707).
  • steps 801 to 804 which of the videophone off-hook key 5 and the voice off-hook key 6 is pressed, and how it is pressed, It is determined whether the button has just been pressed or has been continuously pressed for a predetermined period of time.
  • steps 805, 806, 807, and 808 the process proceeds to any one of steps 805, 806, 807, and 808, and the video signal captured by the camera unit 8 or the video signal stored in the storage unit 20 in advance is converted. Output them, display them on the display unit 7 (step 809), and proceed to any one of steps 810, 811, 812, 813.
  • steps 810, 811, 812, and 813 the slider 11 or the receiver 9 is operated to change the sensitivity of the microphone 10 accordingly. That is, in this embodiment, the following four states are identified in steps 81, 802, 803, and 804.
  • the video to be transmitted is converted to the video from the camera unit 8 by operating the off-hook key 5 for a videophone or operating the off-hook key 6 for audio.
  • off-hook keys 5 and 6 can be operated instantaneously or continuously for a predetermined period of time or more.
  • switch between talking on the receiver 9 and talking on the speaker 11 When talking on the speaker 11, the sensitivity of the microphone 10 is higher than when talking on the receiver 9. And make hands-free calls more effective.
  • the above-mentioned four call states can be immediately selected simply by operating the off-hook key 5 for the videophone and the off-hook key 6 for the voice in two types, respectively. It has the advantage that it is easy for the user to use because only extremely simple operations are required. In a telephone with a videophone function, it is normal for the receiver 9 to operate for voice calls only and the speaker 11 to operate for videophone calls, but the reverse situation is also possible. Yes, it is more convenient for the user to be able to switch between them arbitrarily. An embodiment for performing this switching operation will be described below. In the first and second embodiments, it is assumed that the receiver is in the operating state, that is, in the so-called receiver talking state (step 901), as shown in FIG.
  • step 902 if the voice off-hook key 6 is continuously operated (pressed and held) for a predetermined period of time or longer (step 902), it is detected by the central processing unit 21 and the central processing unit 2 1 Operation of receiver 9 is stopped under the control of Instead, the speaker 11 becomes active, and is switched to a so-called speaker talk state (step 903). Then, in this speaker communication state, the sensitivity of the microphone 10 is further controlled under the control of the central processing unit 21 so as to increase to the sensitivity required for hands-free communication (step 904). . Conversely, as shown in FIG. 10, it is assumed that the speaker 11 is in an operating state, that is, in a so-called speaker talking state (step 1001).
  • the voice off-hook key 6 is continuously operated (pressed and held) for a predetermined period of time or longer (step 1002), it is detected by the central processing unit 21 and the central processing unit 21 detects it. Under the control of 21, the operation of the speaker 11 is stopped, and the receiver 9 is put into the operating state instead, and the state is switched to the so-called receiver talking state (step 1003). Then, in this receiver talking state, the sensitivity of the microphone 10 is further controlled so as to be lowered to the sensitivity required for the receiver talking under the control of the central processing unit 21 (step 1004).
  • the video signal from the camera unit 8 is automatically automatically operated by operating the videophone off-hook key 5 or the audio off-hook key 6 in a videophone call.
  • the video stored in the storage unit 20 is selected and transmitted.
  • these images can be arbitrarily switched during a videophone call.
  • this embodiment will be described. That is, in the videophone call state of the above embodiment, as shown in FIG. 11, it is assumed that the video from the camera unit 8 is transmitted (camera image state: step 1101).
  • the videophone off-hook key 5 is continuously operated for a predetermined period of time or longer (long press operation: step 1102), it is detected by the central processing unit 21 and the central processing unit 21 detects it.
  • the transmission of the video from the camera unit 8 is stopped, and the video such as the last image stored in the storage unit 20 is replaced with this.
  • the image is transmitted (alternative image state: step 1103).
  • an image such as an illustration image stored in the storage unit 20 is being transmitted (alternative image state: step 1201).
  • the central processing unit 21 detects it.
  • the transmission of the video such as the illustration image stored in the storage unit 20 is stopped, and the camera unit 8 transmits the captured video to the other party instead.
  • Step 1 2 0 3 Step 1 2 0 3
  • the off-hook key 6 for voice and the off-hook key 5 for videophone are continuously operated (pressed and held) for a predetermined period of time or more, even during a call.
  • the receiver call state and the speaker call state can be switched, and the video transmission state from the camera unit 8 and the video transmission state from the storage unit 20 can be arbitrarily switched.
  • the video signal is stored in the storage unit 20 as it is. However, it is also possible to encode and store the video signal in advance.
  • a plurality may be set to 20 and one of the set plurals may be selected with a key or the like, and the process may be shifted to the next step in accordance with the selection.
  • the connection automatically shifts to a voice call connection
  • in “Setting 2” the disconnection processing is performed
  • in "Setting 3” it is possible to make only a voice call connection without connecting the line as a videophone from the beginning.
  • the line connection using only voice is automatically performed. Therefore, even if the other party has no videophone function, only the voice call can be easily performed. It can be carried out.
  • the user by enabling the user to select the processing to be performed when the line connection of a videophone fails, it is possible to provide a user-friendly telephone.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Business, Economics & Management (AREA)
  • General Business, Economics & Management (AREA)
  • Telephonic Communication Services (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Telephone Function (AREA)

Abstract

La présente invention concerne un appareil téléphonique à fonction visiophone permettant d'établir une liaison avec un partenaire de communication au moyen d'une simple opération. Dans cet appareil téléphonique à fonction visiophone permettant de transmettre des informations vidéo et des informations audio à un partenaire de communication, une liaison est établie afin d'appeler un visiophone (étape 404), il est vérifié si la liaison est établie (étape 405) et si l'établissement de liaison a échoué, une liaison est automatiquement établie pour une communication audio (étape 410). Ainsi, lorsque l'appareil téléphonique d'un partenaire de communication ne possède pas de fonction visiophone, une communication audio peut être établie sans appeler séparément cette communication audio.
PCT/JP2002/004920 2001-07-27 2002-05-21 Appareil telephonique a fonction visiophone Ceased WO2003013107A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2001228062A JP2003046676A (ja) 2001-07-27 2001-07-27 テレビ電話機能付き電話機
JP2001-228062 2001-07-27

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WO2003013107A1 true WO2003013107A1 (fr) 2003-02-13

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Cited By (3)

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Publication number Priority date Publication date Assignee Title
WO2007131421A1 (fr) * 2006-04-28 2007-11-22 Huawei Technologies Co., Ltd. Méthode et procédé pour déclencher le son de lecture de panne
CN100352294C (zh) * 2004-12-31 2007-11-28 华为技术有限公司 一种在可视电话业务中通知业务失败原因的方法
CN100411449C (zh) * 2005-06-10 2008-08-13 中国移动通信集团公司 移动终端无法正常使用可视电话时的提示方法

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JP4750566B2 (ja) 2006-01-26 2011-08-17 富士通株式会社 通信制御システム

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JPH04165853A (ja) * 1990-10-30 1992-06-11 Oki Electric Ind Co Ltd テレビ電話機
JPH05327939A (ja) * 1992-05-22 1993-12-10 Hitachi Ltd テレビ電話およびテレビ電話の発信方法
JP2000124993A (ja) * 1998-10-14 2000-04-28 Denso Corp テレビ電話

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Publication number Priority date Publication date Assignee Title
JPH03270389A (ja) * 1990-03-19 1991-12-02 Fujitsu Ltd テレビ電話の自動接続方法
JPH04165853A (ja) * 1990-10-30 1992-06-11 Oki Electric Ind Co Ltd テレビ電話機
JPH05327939A (ja) * 1992-05-22 1993-12-10 Hitachi Ltd テレビ電話およびテレビ電話の発信方法
JP2000124993A (ja) * 1998-10-14 2000-04-28 Denso Corp テレビ電話

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100352294C (zh) * 2004-12-31 2007-11-28 华为技术有限公司 一种在可视电话业务中通知业务失败原因的方法
CN100411449C (zh) * 2005-06-10 2008-08-13 中国移动通信集团公司 移动终端无法正常使用可视电话时的提示方法
WO2007131421A1 (fr) * 2006-04-28 2007-11-22 Huawei Technologies Co., Ltd. Méthode et procédé pour déclencher le son de lecture de panne

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