Patent US4652934A successfully refreshed from Google Patents.
US4652934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Facsimile transceiver equipped with broadcasting feature
Assignee: Hitachi Ltd
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Filing: 1986-03-26
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Granted: 1987-03-24
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Expires: 2006-03-26
Abstract
Abstract A facsimile transceiver equipped with a broadcasting feature wherein a transmission data is temporarily stored in a memory and thereafter the data is successively transmitted to a plurality of destinations. The facsimile transceiver includes a unit for expanding and reproducing once compressed and stored transmission data, a switch unit provided at the input side of a scanning resolution converter for selecting either the data from the expansion and reproduction unit or the transmission data from a scanner. In case broadcast is conducted using the facsimile transceiver, the expanded and reproduced transmission data is inputted to the scanning resolution converter to transmit it using the same method as of one-to-one communication. Thus, it is possible to use any type of a facsimile transceiver as a broadcasting reception terminal, and to broadcast to a broadcasting reception terminal in the same mode as of one-to-one communication.
Inventors
- 👤 Hideki Muroya
- 👤 Toraichi Sirakawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:43
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/32; H04N1/32037; H04N1/32064; H04N1/333; H04N1/33307; H04N1/33315; H04N1/33369
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
205 words
A facsimile transceiver comprising: a scanner for reading a document and outputting a video signal; a resolution converter for converting the resolution of said video signal into a desired one; a coder for compressing and coding a transmission data subjected to a resolution conversion by said resolution converter; a memory for storing said compressed transmission data form said coder; a decoder for reading said compressed transmission data stored in said memory and reproducing said video signal before said compression; a signal change section for changing an input to said resolution converter by selecting either said video signal from said scanner or said video signal from said decoder; a modem for transmitting a transmission data over a telephone line; and a control section for controlling while reading said documcnt to change said signal change section so as for said video signal from said scanner to be inputted to said resolution converter, and to store said compressed transmission data from said coder into said memory, and controlling while broadcasting to change said signal change section so as for said video signal from said decoder to be inputted to said resolution converter, and to transmit said transmission data from said coder via said modem to said telephone line.
Claim 2
Dependent Claim
205 words
A facsimile transceiver comprising: a scanner for reading a document and outputting a video signal; a resolution converter for converting the resolution of said video signal into a desired one; a coder for compressing and coding a transmission data subjected to a resolution conversion by said resolution converter; a memory for storing said compressed transmission data form said coder; a decoder for reading said compressed transmission data stored in said memory and reproducing said video signal before said compression; a signal change section for changing an input to said resolution converter by selecting either said video signal from said scanner or said video signal from said decoder; a modem for transmitting a transmission data over a telephone line; and a control section for controlling while reading said documcnt to change said signal change section so as for said video signal from said scanner to be inputted to said resolution converter, and to store said compressed transmission data from said coder into said memory, and controlling while broadcasting to change said signal change section so as for said video signal from said decoder to be inputted to said resolution converter, and to transmit said transmission data from said coder via said modem to said telephone line.
Claim 3
Dependent Claim
240 words
A facsimile transceiver comprising: a scanner for reading a document and outputting a video signal; a document size detector for detecting the size of said document; a resolution converter for converting the resolution of said video signal into a desired one; a coder for compressing and coding a transmission data subjected to a resolution conversion by said resolution converter; a memory for storing said compressed transmission data from said coder; a decoder for reading said compressed transmission data stored in said memory and reproducing said video signal before said compression; a signal change section for changing an input to said resolution converter by selecting either said video signal from said scanner or said video signal from said decoder; a modem for transmitting a transmission data over a telephone line; and a control section for controlling while reading said document to change said signal change section so as for said video signal from said scanner to be inputted to said resolution converter, said resolution converter performing the resolution conversion of said video signal based on a document size information from said document size detector, and to store said compressed transmission data from said coder into said memory, and controlling while broadcasting to change said signal change section so as for said video signal from said data reproduction section to be inputted to said resolution converter, and to transmit said transmission data from said coder via said modem to said telephone line.
Claim 4
Dependent Claim
240 words
A facsimile transceiver comprising: a scanner for reading a document and outputting a video signal; a document size detector for detecting the size of said document; a resolution converter for converting the resolution of said video signal into a desired one; a coder for compressing and coding a transmission data subjected to a resolution conversion by said resolution converter; a memory for storing said compressed transmission data from said coder; a decoder for reading said compressed transmission data stored in said memory and reproducing said video signal before said compression; a signal change section for changing an input to said resolution converter by selecting either said video signal from said scanner or said video signal from said decoder; a modem for transmitting a transmission data over a telephone line; and a control section for controlling while reading said document to change said signal change section so as for said video signal from said scanner to be inputted to said resolution converter, said resolution converter performing the resolution conversion of said video signal based on a document size information from said document size detector, and to store said compressed transmission data from said coder into said memory, and controlling while broadcasting to change said signal change section so as for said video signal from said data reproduction section to be inputted to said resolution converter, and to transmit said transmission data from said coder via said modem to said telephone line.
Claim 5
Dependent Claim
217 words
A facsimile transceiver comprising: a scanner for reading a document and outputting a video signal; a resolution converter for converting the resolution of said video signal into a desired one; a coder for compressing and coding a transmission data subjected to a resolution conversion by said resolution converter; a memory for storing said compressed transmission data from said data compression section; a decoder for reading said compressed transmission data stored in said memory and reproducing said video signal before said compression; a signal change section for changing an input to said resolution converter by selecting either said video signal from said scanner or said video signal from said decoder; a modem for transmitting a transmission data over a telephone line; and a control section for controlling while reading said document to change said signal change section so as for said video signal from said scanner to be inputted to said resolution converter, and to store said compressed transmission data from said coder into said memory, and controlling while broadcasting to change said signal change section so as for said video signal from said decoder to be inputted to said resolution converter, and to transmit said transmission data from said coder via said modem to said telephone line without compressing and coding said video signal by said coder.
Claim 6
Dependent Claim
217 words
A facsimile transceiver comprising: a scanner for reading a document and outputting a video signal; a resolution converter for converting the resolution of said video signal into a desired one; a coder for compressing and coding a transmission data subjected to a resolution conversion by said resolution converter; a memory for storing said compressed transmission data from said data compression section; a decoder for reading said compressed transmission data stored in said memory and reproducing said video signal before said compression; a signal change section for changing an input to said resolution converter by selecting either said video signal from said scanner or said video signal from said decoder; a modem for transmitting a transmission data over a telephone line; and a control section for controlling while reading said document to change said signal change section so as for said video signal from said scanner to be inputted to said resolution converter, and to store said compressed transmission data from said coder into said memory, and controlling while broadcasting to change said signal change section so as for said video signal from said decoder to be inputted to said resolution converter, and to transmit said transmission data from said coder via said modem to said telephone line without compressing and coding said video signal by said coder.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-03-23 | 1990-09-22 | 1991-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-23 | 1994-09-22 | 1995-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-23 | 1998-09-22 | 1999-03-24 | $7700.00 | Window Closed / Lapsed |