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US3914539A Expired / Lapsed US ⏱️ 0.0 years remaining

Automatic reception system for facsimile receiver

Assignee: Ricoh Co Ltd
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Filing: 1973-12-28
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Granted: 1975-10-21
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Expires: 1993-12-28
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Abstract

Abstract A system for automatically activating a facsimile receiver in response to a call signal is disclosed. In response to a call signal from a facsimile transmitter, a closed DC loop of a telephone subscriber line is established and a power supply circuit is energized, and in response to a status signal transmitted after the call signal, the facsimile receiver is set into a desired reception mode so that video information may be automatically received and the transmitted images or pictures may be reproduced at the receiver. When the reception of video information is completed, the closed DC loop is automatically opened and the power supply circuit is also automatically deenergized. Furthermore, if a malfunction of a recorder or printer in the facsimile receiver should occur, the received video information is switched to be transferred to a magnetic tape recorder. Therefore, after the malfunction of the printer has been remedied, the printer may reproduce the images or pictures from the video information recorded on the magnetic tape.

Inventors

  • 👤 Takemi Hashimoto

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 17:45
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/32; H04N1/32609; H04N1/32614; H04N1/32358; H04N1/32363; H04N1/333; H04N1/33307

Claims Analysis

Total Claims: 13
Claim 1
Independent Claim 192 words
Automatic facsimile reception system comprising a. means adapted to detect a call signal transmitted through a telephone subscriber line; b. line connection control means adapted to establish a DC closed loop over said subscriber line in response to the detection of a call signal by said call signal detecting means; c. receiver means adapted to receive video information transmitted through said DC closed loop from a transmitter; d. recording means adapted to reproduce pictures or images upon a recording paper based upon said video information received by said receiver means; e. memory means adapted to store therein said video information received by said receiver means; f. switching means adapted to selectively switch the video information received by said receiver means to said recording means or to said memory means by selectively connecting said receiver means to said recording means or to said memory means; and g. malfunction control means adapted to cause said switching means to connect said receiver means to said memory means in response to the occurrences of a selected malfunction of said recording means while said recording means is reproducing the pictures or images based upon the video information.
Claim 2
Dependent Claim 192 words
Automatic facsimile reception system comprising a. means adapted to detect a call signal transmitted through a telephone subscriber line; b. line connection control means adapted to establish a DC closed loop over said subscriber line in response to the detection of a call signal by said call signal detecting means; c. receiver means adapted to receive video information transmitted through said DC closed loop from a transmitter; d. recording means adapted to reproduce pictures or images upon a recording paper based upon said video information received by said receiver means; e. memory means adapted to store therein said video information received by said receiver means; f. switching means adapted to selectively switch the video information received by said receiver means to said recording means or to said memory means by selectively connecting said receiver means to said recording means or to said memory means; and g. malfunction control means adapted to cause said switching means to connect said receiver means to said memory means in response to the occurrences of a selected malfunction of said recording means while said recording means is reproducing the pictures or images based upon the video information.
Claim 3
Dependent Claim 18 words
An automatic facsimile reception system as in claim 1 wherein said memory means comprises a magnetic tape recorder.
Claim 4
Dependent Claim 53 words
An automatic facsimile reception system as in claim 1 further comprising means adapted to detect a status signal transmitted prior to said video information; aNd main control means adapted to set the reception system into a desired mode in response to the detection of a status signal by said status signal detecting means.
Claim 5
Dependent Claim 48 words
An automatic facsimile reception system as in claim 1 further comprising means adapted to cause said line connection control means to open said DC closed loop either upon completion of the reception of the video information or in response to a selected malfunction of the facsimile reception system.
Claim 6
Dependent Claim 66 words
An automatic facsimile reception system as in claim 4 further comprising a power supply circuit for the receiver and recording means and means adapted to turn on said power supply circuit in response to the establishment of said DC closed loop by said line connection control means and adapted to turn off said power supply circuit in response to said opening of said DC closed loop.
Claim 7
Dependent Claim 148 words
Automatic facsimile reception system comprising a. receiver means adapted to receive video information transmitted through a telephone subscriber line from a facsimile transmitter; b. recording means adapted to reproduce the images or pictures corresponding to the received video information; c. call signal detecting means adapted to detect a call signal transmitted over said line prior to said video information; and a power supply circuit for the recording means and control means adapted to establish a DC closed loop of said telephone subscriber line and to turn on said power supply circuit in response to the detection of a call signal by said call signal detecting means so that said video information may be received and recorded, and also adapted to turn off said DC closed loop and said power supply circuit in response to a signal transmitted over said line and representing the completion of said video information.
Claim 8
Dependent Claim 148 words
Automatic facsimile reception system comprising a. receiver means adapted to receive video information transmitted through a telephone subscriber line from a facsimile transmitter; b. recording means adapted to reproduce the images or pictures corresponding to the received video information; c. call signal detecting means adapted to detect a call signal transmitted over said line prior to said video information; and a power supply circuit for the recording means and control means adapted to establish a DC closed loop of said telephone subscriber line and to turn on said power supply circuit in response to the detection of a call signal by said call signal detecting means so that said video information may be received and recorded, and also adapted to turn off said DC closed loop and said power supply circuit in response to a signal transmitted over said line and representing the completion of said video information.
Claim 9
Dependent Claim 61 words
An automatic facsimile reception system as in claim 6 further comprising means adapted to detect the occurrence of a selected abnormal condition of the facsimile receiver and recording means; and means adapted to generate control signals in response to the output of said abnormal condition detecting means for thereby opening said DC closed loop and turning off said power supply circuit.
Claim 10
Dependent Claim 53 words
An automatic facsimile reception system as in claim 6 further comprising means adapted to detect a status signal transmitted prior to said video information; and main control means adapted to set the reception system into a desired mode in response to the detection of a status signal by said status signal detecting means.
Claim 11
Dependent Claim 232 words
An automatic facsimile receiver adapted to operate as a part of a facsimile system including a facsimile transmitter and a telephone subscriber line for connecting the transmitter to the receiver, comprising: means for detecting a call signal transmitted over said telephone subscriber line from the transmitter to the receiver; line connection control means responsive to the detection of a call signal by the detecting means for establishing a DC closed loop over said subscriber telephone line; receiver means connected to said closed loop telephone subscriber line for receiving video information transmitted over said line; recording means normally connected to said receiver means to receive the video information received thereby and connectable to the power supply to reproduce on recording paper an image corresponding to the received video information while connected to the power supply; memory means connectable to said receiver means to receive therefrom said video information and to store the received video information; means responsive to the occurrence of a first type selected malfunction in the recording means for disconnecting the recording means from the receiver means and for connecting the memory means to the receiver means for thereby storing in the memory means the video information received by the receiver means; and a power supply for the receiver and means responsive to the occurrence of a sEcond type selected malfunction in the facsimile receiver for disconnecting said power supply therefrom.
Claim 12
Dependent Claim 232 words
An automatic facsimile receiver adapted to operate as a part of a facsimile system including a facsimile transmitter and a telephone subscriber line for connecting the transmitter to the receiver, comprising: means for detecting a call signal transmitted over said telephone subscriber line from the transmitter to the receiver; line connection control means responsive to the detection of a call signal by the detecting means for establishing a DC closed loop over said subscriber telephone line; receiver means connected to said closed loop telephone subscriber line for receiving video information transmitted over said line; recording means normally connected to said receiver means to receive the video information received thereby and connectable to the power supply to reproduce on recording paper an image corresponding to the received video information while connected to the power supply; memory means connectable to said receiver means to receive therefrom said video information and to store the received video information; means responsive to the occurrence of a first type selected malfunction in the recording means for disconnecting the recording means from the receiver means and for connecting the memory means to the receiver means for thereby storing in the memory means the video information received by the receiver means; and a power supply for the receiver and means responsive to the occurrence of a sEcond type selected malfunction in the facsimile receiver for disconnecting said power supply therefrom.
Claim 13
Dependent Claim 32 words
A facsimile receiver as in claim 9 including means for discontinuing the DC closed loop of said subscriber telephone line in response to the occurrence of a selected malfunction in the receiver.

References Cited (Backward Citations)

US2353631A Cited
US3751583A Cited
US3444315A Cited
US3529076A Cited
US3678179A Cited
US3751582A Cited
US3745251A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-10-20 1979-04-21 1979-10-21 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-10-20 1983-04-21 1983-10-21 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-10-20 1987-04-21 1987-10-21 $7700.00 Window Closed / Lapsed

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