Patent US2630249A successfully refreshed from Google Patents.
Patent US4817147A successfully refreshed from Google Patents.
US4817147A
Expired / Lapsed
US
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Intelligent synchronous modem and communication system incorporating the same
Assignee: PCTel Inc
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Filing: 1985-11-18
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Granted: 1989-03-28
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Expires: 2005-11-18
Abstract
Abstract An intelligent synchronous modem and data communication systems utilizing the intelligent synchronous modem are provided. The modem comprises: at least one connector having a first and a second port for primary and secondary channels of communication with a host computer, wherein the primary communication channel is for communication of synchronous data and the secondary communication channel is for communication of asynchronous data; a microprocessor for recognizing and executing commands of the host computer, wherein the commands are in the form of asynchronous data received over the secondary communication channel and interface means for interfacing the microprocessor with telephone lines, wherein synchronous data received by the microprocessor is sent to the interface means. The data communication system of the invention comprises: a host computer including asynchronous and synchronous communication ports, wherein the host computer is arranged to send command mode data through the asynchronous port, and data mode data through the synchronous port; and intelligent synchronous modem as described above; at least one cable for connecting the synchronous port of the host computer with said synchronous port of the modem, and for connecting the asynchronous port of the host computer with the asynchronous port of the modem; and code/decode means for coding data received from the host computer into a synchronous format, and for decoding synchronous format data received from a second computer into data understandable by the host computer. Preferably, the modem of the invention is arranged to permit the conversion of the modem from an intelligent synchronous modem into an intelligent asynchronous modem through the use of data path logic circuitry which is controlled by the microprocessor of the modem.
Inventors
- 👤 Andrew M. Gorniak
- 👤 Michael J. Fargano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:49
CPC Classifications
H; H04; H04M; H04M11/00; H04M11/06; G; G06; G06F; G06F13/00; G06F13/38; G06F13/382; G06F13/385
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
151 words
An intelligent synchronous modem comprising: (a) at least one connector having a plurality of pins, a first distinct set of pins comprising a first port for a primary channel of communication with a host computer and a second distinct set of pins comprising a second port for a secondary channel of communication with a host computer, wherein the primary communication channel is for communication of data mode data and the secondary communication channel is for communication of command mode data; (b) a microprocessor for receiving, recognizing, and executing commands of said host computer, wherein said command mode data are in the form of asynchronous data received over said secondary communication channel; and (c) interface means for interfacing said microprocessor with a telephone line, wherein said data mode data received by said microprocessor are sent to said interface means, and wherein said data mode data are in the form of synchronous data.
Claim 2
Dependent Claim
151 words
An intelligent synchronous modem comprising: (a) at least one connector having a plurality of pins, a first distinct set of pins comprising a first port for a primary channel of communication with a host computer and a second distinct set of pins comprising a second port for a secondary channel of communication with a host computer, wherein the primary communication channel is for communication of data mode data and the secondary communication channel is for communication of command mode data; (b) a microprocessor for receiving, recognizing, and executing commands of said host computer, wherein said command mode data are in the form of asynchronous data received over said secondary communication channel; and (c) interface means for interfacing said microprocessor with a telephone line, wherein said data mode data received by said microprocessor are sent to said interface means, and wherein said data mode data are in the form of synchronous data.
Claim 3
Dependent Claim
25 words
An intelligent synchronous modem according to claim 1, wherein: data mode and command mode data may be simultaneously communicated over said primary and secondary channels.
Claim 4
Dependent Claim
150 words
An intelligent synchronous modem according to claim 2, further comprising: (d) scrambling means for scrambling said synchronous data into a proper format for transmittal to a second computer via said telephone line, and for unscrambling data coming into said scrambling means from said second computer; and (e) data path logic circuitry, wherein said microprocessor is arranged to modulate the synchronous data received for sending to said interface means; said microprocessor outputs said modulated synchronous data in a digital parallel format; and said interface means is arranged to convert said parallel digital data received from said microprocessor into an analog serial format. said microprocessor controls said logic circuitry, said data path logic circuitry is arranged to permit the conversion of the said modem into an intelligent asynchronous modem, and said scrambling means is arranged to convert asynchronous data coming from said host computer into clocked data for output to said microprocessor.
Claim 5
Dependent Claim
45 words
An intelligent synchronous modem according to claim 1. further comprising: (d) scrambling means for scrambling said synchronous data into a proper format for transmittal to a second computer via said telephone line, and for unscrambling data coming into said scrambling means from said second computer.
Claim 6
Dependent Claim
25 words
An intelligent synchronous modem according to claim 4, wherein: said microprocessor is arranged to modulate the synchronous data received for sending to said interface means.
Claim 7
Dependent Claim
42 words
An intelligent synchronous modem according to claim 5, wherein: said microprocessor outputs said modulated synchronous data in a digital parallel format; and said interface means is arranged to convert said parallel digital data received from said microprocessor into an analog serial format.
Claim 8
Dependent Claim
65 words
An intelligent synchronous modem according to claim 4, further comprising: (e) data path logic circuitry, wherein said microprocessor controls said logic circuitry, said data path logic circuitry is arranged to permit the conversion of the said modem into an intelligent asynchronous modem, and said scrambling means is arranged to convert asynchronous data coming from said host computer into clocked data for output to said microprocessor.
Claim 9
Dependent Claim
237 words
A data communication system, comprising: (a) a host computer including asynchronous and synchronous communication ports, wherein said computer is arranged to send command mode data through said asynchronous port, and data mode data through said synchronous port; (b) an intelligent synchronous modem, including first and second ports for primary and secondary channels for communication with said host computer, said first and second ports comprising first and second distinct sets of pins, wherein the primary communication channel is for communication of data mode data and the secondary communication channel is for communication of command mode data, a microprocessor for receiving, recognizing, and executing commands of said host computer, wherein said commands are in the form of asynchronous command data received over said secondary communication channel, and interface means for interfacing said microprocessor with a telephone line, wherein said data mode data received by said microprocessor are sent to said interface means, and wherein said data mode data are in the form of synchronous data; (c) at least one cable for connecting said synchronous port of said host computer with said first port of said modem, and for connecting said asynchronous port of said host computer with said second port of said modem; and (d) code/decode means for coding data of said host computer into a protocol for synchronous communication, and for decoding synchronous communication protocol data received from a second computer into data understandable by said host computer.
Claim 10
Dependent Claim
237 words
A data communication system, comprising: (a) a host computer including asynchronous and synchronous communication ports, wherein said computer is arranged to send command mode data through said asynchronous port, and data mode data through said synchronous port; (b) an intelligent synchronous modem, including first and second ports for primary and secondary channels for communication with said host computer, said first and second ports comprising first and second distinct sets of pins, wherein the primary communication channel is for communication of data mode data and the secondary communication channel is for communication of command mode data, a microprocessor for receiving, recognizing, and executing commands of said host computer, wherein said commands are in the form of asynchronous command data received over said secondary communication channel, and interface means for interfacing said microprocessor with a telephone line, wherein said data mode data received by said microprocessor are sent to said interface means, and wherein said data mode data are in the form of synchronous data; (c) at least one cable for connecting said synchronous port of said host computer with said first port of said modem, and for connecting said asynchronous port of said host computer with said second port of said modem; and (d) code/decode means for coding data of said host computer into a protocol for synchronous communication, and for decoding synchronous communication protocol data received from a second computer into data understandable by said host computer.
Claim 11
Dependent Claim
25 words
A data communication system according to claim 8, wherein: data mode and command mode data may be simultaneously communicated over said primary and secondary channels.
Claim 12
Dependent Claim
105 words
A data communication system according to claim 9, wherein: said modem further includes scrambling means for scrambling said synchronous data into a proper format for transmittal to a second computer via said telephone line, and for unscrambling data coming into said scrambling means from said second computer, and said microprocessor of said modem is arranged to modulate the synchronous data received for sending to said interface means, said microprocessor of said modem outputs said modulated synchronous data in a parallel digital format, and said interface means of said modem is arranged to convert said parallel data received from said microprocessor into an analog serial format.
Claim 13
Dependent Claim
69 words
A data communication system according to claim 10, wherein: said modem further includes data path logic circuitry, wherein, said microprocessor of said modem controls said logic circuitry, said data path logic circuitry is arranged to permit the conversion of said modem into an intelligent asynchronous modem, and said scrambling means is arranged to convert asynchronous data coming from said host computer into clocked data for output to said microprocessor.
Claim 14
Dependent Claim
85 words
A data communication system according to claim 11, wherein: said host computer is arranged with two connectors, one of said connectors for said synchronous port of said host computer, and the other of said connectors for said asynchronous port of said host computer; and said at least one cable comprises a cable which connects on one end to said connector of said modem, and is split on its other end such that it is arranged to connect with said two connectors of said host computer.
Claim 15
Dependent Claim
47 words
A data communication system according to claim 8, wherein: said modem further includes scrambling means for scrambling said synchronous data into a proper format for transmittal to a second computer via said telephone line, and for unscrambling data coming into said scrambling means from said second computer.
Claim 16
Dependent Claim
28 words
A data communication system according to claim 13, wherein: said microprocessor of said modem is arranged to modulate the synchronous data received for sending to said interface means.
Claim 17
Dependent Claim
47 words
A data communication system according to claim 14, wherein: said microprocessor of said modem outputs said modulated synchronous data in a parallel digital format; and said interface means of said modem is arranged to convert said parallel data received from said microprocessor into an analog serial format.
Claim 18
Dependent Claim
69 words
A data communication system according to claim 13, wherein: said modem further includes data path logic circuitry, wherein said microprocessor of said modem controls said logic circuitry, said data path logic circuitry is arranged to permit the conversion of said modem into an intelligent asynchronous modem, and said scrambling means is arranged to convert asynchronous data coming from said host computer into clocked data for output to said microprocessor.
Claim 19
Dependent Claim
85 words
A data communication system according to claim 8, wherein: said host computer is arranged with two connectors, one of said connectors for said synchronous port of said host computer, and the other of said connectors for said asynchronous port of said host computer; and said at least one cable comprises a cable which connects on one end to said connector of said modem, and is split on its other end such that it is arranged to connect with said two connectors of said host computer.
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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) | 1992-03-27 | 1992-09-26 | 1993-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-27 | 1996-09-26 | 1997-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-27 | 2000-09-26 | 2001-03-28 | $7700.00 | Window Closed / Lapsed |