EP0314122A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Still picture picturephone communication system
Assignee: Mitsubishi Electric Corp
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Filing: 1988-10-27
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Granted: —
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Expires: 2008-10-27
Abstract
Abstract A still picture picturephone communication system for transmitting and receiving a still picture over a telephone circuit including a handshaking process wherein prior to still picture transmission, identification code data indicating a function of picturephone set is transmitted and received, and decision is made as to whether the still picture is being transmitted or not, wherein a designation code of a desired response waiting time within an identification code data used at the time of handshaking is formed, and the response is delayed by a period of time corresponding to the response waiting time, a still picture data is directly transmitted and received without handshaking, a character data including character information and the like is transmitted and received, manipurating a picturephone set on one party can be made a picturephone set on the other party to transmit a picture data therefrom, furthermore, the picture sent from the called party can be transferred to a third party.
Inventors
- 👤 Lawrence Dee Emmons
- 👤 James Scott Mackley
- 👤 Hiroshi C/O Mitsubishi Denki Kabushiki Ohtsuka
- 👤 Yutaka C/O Mitsubishi Denki Kabushiki Ueno
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 11:10
CPC Classifications
H; H04; H04N; H04N7/00; H04N7/18; H04N1/00; H04N1/32; H04N1/327; H04N1/32789; H04N1/32791; H04N1/32702; H04N7/14; H04N7/141; H04N7/147
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
145 words
A still picture picturephone communication system for transmitting and receiving a still picture over a telephone circuit including a handshaking process wherein prior to still picture transmission, identification code data indicating a function of picturephone sets and including a divided number of pixels per one frame of a still picture is sent and received, matching of the function of equipment of a calling party with the function of equipment of a called party is achieved, and decision is made as to whether the still picture is being transmitted or not, wherein desired response waiting time data is formed within said identification code data; and in said handshaking process, sending out of response data including identification code data or still picture data is delayed by a period of time corresponding to the response waiting time data within the identification code data received from the called party.
Claim 2
Dependent Claim
145 words
A still picture picturephone communication system for transmitting and receiving a still picture over a telephone circuit including a handshaking process wherein prior to still picture transmission, identification code data indicating a function of picturephone sets and including a divided number of pixels per one frame of a still picture is sent and received, matching of the function of equipment of a calling party with the function of equipment of a called party is achieved, and decision is made as to whether the still picture is being transmitted or not, wherein desired response waiting time data is formed within said identification code data; and in said handshaking process, sending out of response data including identification code data or still picture data is delayed by a period of time corresponding to the response waiting time data within the identification code data received from the called party.
Claim 3
Dependent Claim
52 words
A still picture picturephone communication system for transmitting and receiving a desired still picture during a telephone call by using a telephone communication circuit, wherein for a particular system classification, a communication of a still picture data is started in a condition in which handshaking is omitted between sending and receiving parties.
Claim 4
Dependent Claim
52 words
A still picture picturephone communication system for transmitting and receiving a desired still picture during a telephone call by using a telephone communication circuit, wherein for a particular system classification, a communication of a still picture data is started in a condition in which handshaking is omitted between sending and receiving parties.
Claim 5
Dependent Claim
134 words
A still picture picturephone communication system wherein during a call, picture data obtained by a TV camera is modulated to a picture data signal to transmit the picture data signal to the other party through a telephone circuit, and a picture data signal transmitted from the other party through the telephone circuit is received to demodulate it to picture data and the picture data is displayed on a monitar TV, said system comprising: means for inputting bit data which is in the form of a binary data; means for modulating the inputted bit data to a bit signal by establishing a correspondence between each of said bit data and one or more signals selected from said picture data signals and; means for transmitting the bit signal to the other party through the telephone circuit.
Claim 6
Dependent Claim
134 words
A still picture picturephone communication system wherein during a call, picture data obtained by a TV camera is modulated to a picture data signal to transmit the picture data signal to the other party through a telephone circuit, and a picture data signal transmitted from the other party through the telephone circuit is received to demodulate it to picture data and the picture data is displayed on a monitar TV, said system comprising: means for inputting bit data which is in the form of a binary data; means for modulating the inputted bit data to a bit signal by establishing a correspondence between each of said bit data and one or more signals selected from said picture data signals and; means for transmitting the bit signal to the other party through the telephone circuit.
Claim 7
Dependent Claim
36 words
A system according to claim 3, wherein said picture data signal and said bit data signal include both a modulated component of an amplitude and a modulated component of a phase of a single carrier frequency.
Claim 8
Dependent Claim
22 words
A system according to claim 4, wherein said bit signals respectively correspond to signals of maximum amplitudes of two kinds of phases.
Claim 9
Dependent Claim
29 words
A system according to claim 4 or 5, wherein said bit signals respectively correspond to two sets of plurality of successive signals of one type of said picture signal.
Claim 10
Dependent Claim
77 words
A still picture picturephone communication system for transmitting and receiving a desired still picture during a telephone call by using a telephone communication circuit comprising: a step of connecting a circuit in automatic response to a call signal from another picturephone set; a step of ascertaining a polling code received from said another picturephone set; and a step of modulating picture data obtained by a TV camera and sending the modulated picture data through the telephone circuit.
Claim 11
Dependent Claim
77 words
A still picture picturephone communication system for transmitting and receiving a desired still picture during a telephone call by using a telephone communication circuit comprising: a step of connecting a circuit in automatic response to a call signal from another picturephone set; a step of ascertaining a polling code received from said another picturephone set; and a step of modulating picture data obtained by a TV camera and sending the modulated picture data through the telephone circuit.
Claim 12
Dependent Claim
177 words
A still picture picturephone communication system comprising: a first image memory for storing picture data of a picture of one party obtained by a TV camera; a second image memory for storing picture data of a picture of the other party of communication sent therefrom; a display for displaying the picture of the one party in a mirrored condition reversed with respect to right and left of the picture from the picture data stored in said first image memory, and for displaying the picture of the other party as it is in a non-mirrored condition from the picture data stored in said second image memory; a selection button for selecting the picture to be transmitted; and a CPU for reading out the picture data of the picture selected by said selection button from said image memory, and for controlling transmission of the selected picture so that the selected picture is transmitted to the other party in the non-mirrored condition independent of whether the selected picture is the picture of the one party or of the other party.
Claim 13
Dependent Claim
177 words
A still picture picturephone communication system comprising: a first image memory for storing picture data of a picture of one party obtained by a TV camera; a second image memory for storing picture data of a picture of the other party of communication sent therefrom; a display for displaying the picture of the one party in a mirrored condition reversed with respect to right and left of the picture from the picture data stored in said first image memory, and for displaying the picture of the other party as it is in a non-mirrored condition from the picture data stored in said second image memory; a selection button for selecting the picture to be transmitted; and a CPU for reading out the picture data of the picture selected by said selection button from said image memory, and for controlling transmission of the selected picture so that the selected picture is transmitted to the other party in the non-mirrored condition independent of whether the selected picture is the picture of the one party or of the other party.
Claim 14
Dependent Claim
77 words
A system according to claim 8, wherein said first image memory stores the picture data in a reversed condition with respect to right and left of the picture, and said CPU reads out the stored picture data in the order when the picture of the one party is to be displayed, and reads out the stored picture data in the reverse order when the picture of the one party is to be transmitted to the other party.
Claim 15
Dependent Claim
42 words
A system according to claim 8 or 9, wherein when the picture data of the other party stored in said second image memory is to be transmitted, an indication indicating that the picture is a transferred picture is inserted in the picture.
References Cited (Backward Citations)
No citation records indexed.
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