US3579200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Data processing system
Assignee: International Business Machines Corp
•
Filing: 1969-07-30
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Granted: 1971-05-18
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Expires: 1989-07-30
Abstract
Abstract A data processing system including a plurality of terminals connected to a transmission medium for sending and receiving data and control signals between terminals is provided, and each terminal includes a master control connected by bus means having data lines and control lines to a plurality of satellite controls and input-output devices. A first parity checking device checks the parity of the signals on the control lines from each satellite to the master control, and a second parity checking device checks the parity of the signals on the control lines from the master control to the satellite controls. Even or odd parity may be used, but odd parity is preferred. Each satellite control includes a plurality of circuits interconnected to perform the control function of such satellite control, and each one of the plurality of circuits has an output line connected to an odd number of other such circuits, whereby a malfunction in any one of said plurality of circuits affects an odd number of control lines from such satellite control which thereby forces the first parity checking device to detect a malfunction. Each satellite control, for the odd parity case, supplies a control signal on a single given control line when it is not active, whereby the first parity checking device checks the status of each satellite control during both the active and the inactive states.
Inventors
- 👤 Robert H Davis
- 👤 Jerry S Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:57
CPC Classifications
G; G06; G06F; G06F11/00; G06F11/07; G06F11/0703; G06F11/0751; G06F11/0763; G06F13/00; G06F13/10; G06F13/12; G06F13/124
Claims Analysis
Total Claims: 53
Claim 1
Independent Claim
107 words
A data processing system including: a master control and a plurality of satellite controls, an input bus having a plurality of control lines connecting each satellite control to the master control, means in the master control for accessing or selectively connecting one satellite control at a time to said bus, means in each satellite control to energize an odd number of said control lines to the master control during each access, and said master control including parity checking means for checking the odd parity of said plurality of control lines, whereby a malfunction in any satellite control is detected when it is accessed by the master control.
Claim 2
Dependent Claim
107 words
A data processing system including: a master control and a plurality of satellite controls, an input bus having a plurality of control lines connecting each satellite control to the master control, means in the master control for accessing or selectively connecting one satellite control at a time to said bus, means in each satellite control to energize an odd number of said control lines to the master control during each access, and said master control including parity checking means for checking the odd parity of said plurality of control lines, whereby a malfunction in any satellite control is detected when it is accessed by the master control.
Claim 3
Dependent Claim
79 words
The apparatus of claim 1 further including: a plurality of satellites, means connecting each satellite to a given one of said satellite controls, and each satellite control having means to energize a given one of the control lines when it is active and a different one of the control lines when it is not active, whereby each satellite control is checked during its access for malfunctions when it is not active and as well as when it is active.
Claim 4
Independent Claim
118 words
A system including: a plurality of input-output devices, a plurality of satellite controls, one for each input-output device, means connecting given satellite controls to designated input-output devices, a master control, means connected between the master control and said plurality of satellite controls for connecting the master control selectively to each satellite control, said master control including first storage means to supply data signals to or receive data signals from any input-output device, and said master control including second storage means to supply control signals to or receive control signals from any input-output device, and whereby data signals may be exchanged between said input-output devices via said master control under the control of control signals from the master control.
Claim 5
Independent Claim
118 words
A system including: a plurality of input-output devices, a plurality of satellite controls, one for each input-output device, means connecting given satellite controls to designated input-output devices, a master control, means connected between the master control and said plurality of satellite controls for connecting the master control selectively to each satellite control, said master control including first storage means to supply data signals to or receive data signals from any input-output device, and said master control including second storage means to supply control signals to or receive control signals from any input-output device, and whereby data signals may be exchanged between said input-output devices via said master control under the control of control signals from the master control.
Claim 6
Dependent Claim
23 words
The apparatus of claim 3 wherein the master control includes means to connect the master control to the satellite controls successively in turn.
Claim 7
Dependent Claim
32 words
The apparatus of claim 3 wherein the master control includes means which checks the parity of control signals received from each selected input-output device and indicates parity error if one is detected.
Claim 8
Dependent Claim
47 words
The apparatus of claim 5 wherein each satellite control supplies control signals on an odd number of control lines in normal operation, and said means which checks the parity of control signals verifies correct parity during normal operation and indicates a parity error if one is detected.
Claim 9
Dependent Claim
41 words
The apparatus of claim 6 wherein each satellite control supplies a control signal on a given control line when it is active, and each satellite control supplies a control signal on a different given control line when it is not active.
Claim 10
Dependent Claim
84 words
The apparatus of claim 7 wherein each satellite control includes a plurality of component circuits which are interconnected to perform the control function of each satellite control, and each component circuit has an output line connected to an odd number of other active component circuits, whereby a malfunction in any active component circuit affects an odd number of control lines from each satellIte control and a parity error is detected by said means which checks the parity of control signals in said master control.
Claim 11
Dependent Claim
166 words
A data processing system including: a plurality of input devices and a plurality of output devices, a master control and a plurality of satellite controls, means connecting each individual satellite control to a given individual input device or a given individual output device, an input bus having a plurality of control lines connected to the master control, means connected to said input bus for selectively connecting one satellite control at a time to said input bus, parity checking means connected to said input bus for checking the parity of said plurality of input lines whereby a malfunction in any satellite control is detected when it is accessed or selected by the master control, an output bus connected between the master control and each satellite control, said output bus supplying control signals to said satellite controls, and means connecting each input device to said input bus and each output device to said output bus whereby data may be exchanged between said input devices and said output devices.
Claim 12
Dependent Claim
166 words
A data processing system including: a plurality of input devices and a plurality of output devices, a master control and a plurality of satellite controls, means connecting each individual satellite control to a given individual input device or a given individual output device, an input bus having a plurality of control lines connected to the master control, means connected to said input bus for selectively connecting one satellite control at a time to said input bus, parity checking means connected to said input bus for checking the parity of said plurality of input lines whereby a malfunction in any satellite control is detected when it is accessed or selected by the master control, an output bus connected between the master control and each satellite control, said output bus supplying control signals to said satellite controls, and means connecting each input device to said input bus and each output device to said output bus whereby data may be exchanged between said input devices and said output devices.
Claim 13
Dependent Claim
62 words
The apparatus of claim 9 further including: means in each satellite control to energize a given one of its control lines when it is active and a different one of its control lines when it is not active, whereby each satellite control is checked during its access for malfunctions when it is active and as well as when it is not active.
Claim 14
Dependent Claim
42 words
The apparatus of claim 9 wherein each satellite control supplies control signals on an odd number of control lines in normal operations, and said parity checking means verifies correct parity during normal operation and indicates a parity error if one is detected.
Claim 15
Dependent Claim
41 words
The apparatus of claim 11 wherein each satellite control supplies a control signal on a given control line when it is active, and each satellite control supplies a control signal on a different given control line when it is not active.
Claim 16
Dependent Claim
74 words
The apparatus of claim 12 wherein each satellite control includes a plurality of component circuits which are interconnected to perform the function of each satellite control, and each component circuit has an output line connected to an odd number of other active component circuits, whereby a malfunction in any active component circuit affects an odd number of control lines from such satellite control and a parity error is detected by said parity checking means.
Claim 17
Dependent Claim
74 words
The apparatus of claim 13 wherein: a first group of component circuits in each satellite control generate said control signal on a given control line when each satellite control is active, and a second group of component circuits in each satellite control generate said control signal on a different given control line when each satellite control is not active, whereby a greater number of said component circuits are checked by said parity checking means.
Claim 18
Dependent Claim
52 words
The apparatus of claim 14 wherein: one of said satellite controls includes means to operate said first group of component circuits during a first portion of its access by the master control and to operate said second group of component circuits during a second portion of its access by the master control.
Claim 19
Dependent Claim
84 words
The apparatus of claim 13 wherein: one of said component circuits is employed as a bistable storage circuit, pulse operated means coupled to said bistable storage circuit for setting it during one access of the satellite control, and further means operated by the bistable storage circuit during the next access of the satellite control, whereby the bistable storage circuit is set and checked in one access to insure it correct operation prior to its use in the next access to operate said further means.
Claim 20
Dependent Claim
196 words
A data processing network including: a plurality of terminals, transmission means connected between the plurality of terminals, each terminal including: a plurality of input-output devices, a plurality of satellite controls, and a master control, means connecting each individual satellite control to a given individual one of the input-output devices, an input bus having control lines and data lines connected to the master control, means connected to the input bus and the plurality of satellite controls for selectively connecting one satellite control at a time via the input bus to the master control for applying data signals and control signals to the master control, an output bus connected between the master control and each satellite control, said output bus supplying control signals to said satellite controls, means connecting selected input-output devices to said input bus for supply data signals to the master control, and means connecting selected input-output devices to said output bus for receiving data signals from the master control, whereby data signals may be exchanged between said input-output devices via said master control, and means connecting one of said input-output devices of each terminal to said transmission means for sending or receiving signals between terminals.
Claim 21
Dependent Claim
196 words
A data processing network including: a plurality of terminals, transmission means connected between the plurality of terminals, each terminal including: a plurality of input-output devices, a plurality of satellite controls, and a master control, means connecting each individual satellite control to a given individual one of the input-output devices, an input bus having control lines and data lines connected to the master control, means connected to the input bus and the plurality of satellite controls for selectively connecting one satellite control at a time via the input bus to the master control for applying data signals and control signals to the master control, an output bus connected between the master control and each satellite control, said output bus supplying control signals to said satellite controls, means connecting selected input-output devices to said input bus for supply data signals to the master control, and means connecting selected input-output devices to said output bus for receiving data signals from the master control, whereby data signals may be exchanged between said input-output devices via said master control, and means connecting one of said input-output devices of each terminal to said transmission means for sending or receiving signals between terminals.
Claim 22
Dependent Claim
30 words
The apparatus of claim 17 wherein the master control in each terminal includes parity checking means for checking the parity of signals on the control lines of the input bus.
Claim 23
Dependent Claim
43 words
The apparatus of claim 18 wherein each satellite control includes control means which supplies control signals on an odd number of control lines in normal operations, and said parity checking means verifies correct parity or indicates a parity error if one is detected.
Claim 24
Dependent Claim
39 words
The apparatus of claim 19 wherein each satellite control includes further control means which supplies a control signal on a given control line when it is active and on a different given control line when it is not active.
Claim 25
Dependent Claim
76 words
The apparatus of claim 20 wherein each satellite control includes a plurality of component circuits which are interconnected to perform the function of each satellite control, and each component circuit has an output line connected to an odd number of other component circuits within each satellite, whereby a malfunction in any component circuit affects an odd number of control lines from such satellite control and a resulting parity error is detected by said parity checking means.
Claim 26
Dependent Claim
74 words
The apparatus of claim 21 wherein: a first group of component circuits in each satellite control generate said control signal on a given control line when each satellite control is active, and a second group of component circuits in each satellite control generate said control signal on a different given control line when each satellite control is not active, whereby a greater number of said component circuits are checked by said parity checking means.
Claim 27
Dependent Claim
230 words
A data processing system including: a plurality of terminals, transmission means connected between said terminals for exchanging signals between terminals, each terminal including: a master control, a plurality of satellite controls, and a plurality of input-output devices, an input bus having a plurality of data lines and a plurality of control lines connected to said master control, means connecting each individual satellite control to an individual input-output device, means connecting given input-output devices to the data lines of said input bus, means connected to said satellite controls and said input bus for accessing or selectively connecting one satellite control at a time on said input bus to the master control, first means in each satellite control which energizes at least one of said control lines during each access, parity checking means connected to said control lines of the input bus for checking the parity of said plurality of control lines during each access, whereby a malfunction in any satellite control or its associated input-output device is detected when the satellite control is accessed by the master control, an output bus having data lines and control lines connected between the master control and the satellite controls, means connecting selected input-output devices to the data lines of the output bus, and means connecting one of the input-output devices of each terminal to said transmission means for sending or receiving signals between terminals.
Claim 28
Dependent Claim
230 words
A data processing system including: a plurality of terminals, transmission means connected between said terminals for exchanging signals between terminals, each terminal including: a master control, a plurality of satellite controls, and a plurality of input-output devices, an input bus having a plurality of data lines and a plurality of control lines connected to said master control, means connecting each individual satellite control to an individual input-output device, means connecting given input-output devices to the data lines of said input bus, means connected to said satellite controls and said input bus for accessing or selectively connecting one satellite control at a time on said input bus to the master control, first means in each satellite control which energizes at least one of said control lines during each access, parity checking means connected to said control lines of the input bus for checking the parity of said plurality of control lines during each access, whereby a malfunction in any satellite control or its associated input-output device is detected when the satellite control is accessed by the master control, an output bus having data lines and control lines connected between the master control and the satellite controls, means connecting selected input-output devices to the data lines of the output bus, and means connecting one of the input-output devices of each terminal to said transmission means for sending or receiving signals between terminals.
Claim 29
Dependent Claim
42 words
The apparatus of claim 23 wherein said first means in each satellite control includes further means to energize a given one of its control lines when it is active and a different one of its control lines when it is not active.
Claim 30
Dependent Claim
48 words
The apparatus of claim 24 wherein the first means in each satellite control includes additional means which supplies control signals on an odd number of control lines in normal operations, and said parity checking means verifies correct odd parity or indicates a parity error if one is detected.
Claim 31
Dependent Claim
79 words
The apparatus of claim 25 wherein said first means in each satellite control includes a plurality of individual circuits which are interconnected to perform the assigned functions, and each such circuit has an output line connected to an odd number of other individual active circuits within each satellite, whereby a malfunction in any individual active circuit affects an odd number of control lines from such satellite control and a resulting parity error is detected by said parity checking means.
Claim 32
Dependent Claim
87 words
The apparatus of claim 26 wherein said further means includes: a first group of said individual circuits in each satellite control which generate a control signal on said given one of its control lines when each satellite control is active, and a second group of said individual circuits in each satellite control which generate a control signal on said different one of its control line when each satellite control is not active, whereby a greater number of said component circuits are checked by said parity checking means.
Claim 33
Dependent Claim
173 words
A data processing network including: a plurality of terminals, transmission means connected between said plurality of terminals for sending and receiving signals between terminals, each terminal including: a plurality of input-output devices, a plurality of satellite controls, one for each input-output device, means connecting given satellite controls to designated input-output devices, a master control, bus means connecting the master control, said plurality of satellite controls, and said input-output devices, said bus means including data lines and control lines, said master control including first storage means to supply data signals to or receive data signals from any input-output device via said bus means, said master control including second storage means to supply control signals to or receive control signals from any input-output device via said bus means, whereby data signals may be exchanged between said input-output devices via said master control under the control of control signals from the master control, and means connecting one input-output device in each terminal to said transmission means whereby data and control signals may be exchanged between terminals.
Claim 34
Dependent Claim
173 words
A data processing network including: a plurality of terminals, transmission means connected between said plurality of terminals for sending and receiving signals between terminals, each terminal including: a plurality of input-output devices, a plurality of satellite controls, one for each input-output device, means connecting given satellite controls to designated input-output devices, a master control, bus means connecting the master control, said plurality of satellite controls, and said input-output devices, said bus means including data lines and control lines, said master control including first storage means to supply data signals to or receive data signals from any input-output device via said bus means, said master control including second storage means to supply control signals to or receive control signals from any input-output device via said bus means, whereby data signals may be exchanged between said input-output devices via said master control under the control of control signals from the master control, and means connecting one input-output device in each terminal to said transmission means whereby data and control signals may be exchanged between terminals.
Claim 35
Dependent Claim
23 words
The apparatus of claim 28 wherein the master control includes means to connect the master control to the satellite controls successively in turn.
Claim 36
Dependent Claim
35 words
The apparatus of claim 28 wherein the master control includes means which checks the parity of control signals on the control lines from each selected input-output device and indicates parity error if one is detected.
Claim 37
Dependent Claim
47 words
The apparatus of claim 30 wherein each satellite control supplies control signals on an odd number of control lines in normal operations, and said means which checks the parity of control signals verifies correct parity during normal operation and indicates a parity error if one is detected.
Claim 38
Dependent Claim
41 words
The apparatus of claim 31 wherein each satellite control supplies a control signal on a given control line when it is active, and each satellite control supPlies a control signal on a different given control line when it is not active.
Claim 39
Dependent Claim
90 words
The apparatus of claim 32 wherein each satellite control includes a plurality of distinct circuits which are interconnected to perform the control function of each satellite control, and each distinct circuit has an output line connected to an odd number of other such distinct active circuits, whereby a malfunction in any distinct active circuit in a selected satellite control affects an odd number of control lines from such satellite control and a parity error is detected by said means which checks the parity of control signals in said master control.
Claim 40
Dependent Claim
250 words
A data processing system composed of a network of terminals, transmission means connected between the plurality of terminals for sending and receiving data signals and control signals between terminals, each terminal including: a plurality of input-output devices, a plurality of satellite controls, one for each input-output device, means connecting each individual satellite control to a given individual input-output device, a master control, an output bus connected to said master control, and an input bus connected to said master control, means connecting said plurality of satellite controls to said output bus, means connecting selected ones of said input-output devices to said input bus, and means connecting selected ones of said input-output devices to said output bus, means connected to said satellite controls and said input bus for selectively connecting each satellite control via said input bus to said master control, said master control including control storage for receiving control signals via said input bus from said satellite controls and for supplying control signals via said output bus to said satellite controls, first parity checking means connected to said input bus for checking the parity of control signals supplied from each satellite control to said master control, said master control including data storage means for receiving data signals via said input bus from said input-output devices and for supplying data signals via said output bus to said input-output devices, and means connecting one input-output device in each terminal to said transmission means whereby data and control signals may be exchanged between terminals.
Claim 41
Dependent Claim
250 words
A data processing system composed of a network of terminals, transmission means connected between the plurality of terminals for sending and receiving data signals and control signals between terminals, each terminal including: a plurality of input-output devices, a plurality of satellite controls, one for each input-output device, means connecting each individual satellite control to a given individual input-output device, a master control, an output bus connected to said master control, and an input bus connected to said master control, means connecting said plurality of satellite controls to said output bus, means connecting selected ones of said input-output devices to said input bus, and means connecting selected ones of said input-output devices to said output bus, means connected to said satellite controls and said input bus for selectively connecting each satellite control via said input bus to said master control, said master control including control storage for receiving control signals via said input bus from said satellite controls and for supplying control signals via said output bus to said satellite controls, first parity checking means connected to said input bus for checking the parity of control signals supplied from each satellite control to said master control, said master control including data storage means for receiving data signals via said input bus from said input-output devices and for supplying data signals via said output bus to said input-output devices, and means connecting one input-output device in each terminal to said transmission means whereby data and control signals may be exchanged between terminals.
Claim 42
Dependent Claim
23 words
The apparatus of claim 34 wherein the master control includes means to connect the satellite controls successively in turn to the master control.
Claim 43
Dependent Claim
67 words
The apparatus of claim 34 wherein the master control includes second parity checking means connected to said output bus for checking the parity of signals on the control lines to said satellite controls, whereby the parity of control signals supplied by the satellite controls to said master control are checked and the parity of control signals supplied by said master control to said satellite controls are checked.
Claim 44
Dependent Claim
62 words
The apparatus of claim 36 wherein the master control includes third parity checking means for checking the parity of signals supplied on said input bus from said input-output devices to said data storage, and said master control includes fourth parity checking means for checking the parity of data signals supplied from said master control on said output bus to said input-output devices.
Claim 45
Dependent Claim
43 words
The apparatus of claim 34 wherein each satellite control supplies control signals on an odd number of control lines in normal operations, and said first parity checking means verifies correct parity during normal operation and indicates a parity error if one is detected.
Claim 46
Dependent Claim
41 words
The apparatus of claim 38 wherein each satellite control supplies a control signal on a given control line when it is active, and each satellite control supplies a control signal on a different given control line when it is not active.
Claim 47
Dependent Claim
97 words
The apparatus of claim 39 wherein each satellite control includes a plurality of circuits which are interconnected to perform the control function of the given sAtellite control, and each circuit has an output line connected to control an odd number of other active circuits in its satellite control, whereby a malfunction in any active circuit in a selected satellite control affects an odd number of control lines from such satellite control whereby said first parity checking means is forced to detect a parity error of the control signals supplied via said input bus to said master control.
Claim 48
Dependent Claim
71 words
The apparatus of claim 40 wherein said plurality of circuits in each satellite control include a first group of such circuits which are interconnected to generate a control signal on said given one of said control lines when the satellite control is active and a second group of such circuits which are interconnected to generate a control signal on said different given control line when the satellite control is not active.
Claim 49
Dependent Claim
108 words
The apparatus of claim 41 wherein one of said plurality of circuits in at least one satellite control is employed as a bistable storage circuit, pulse operated means coupled to said bistable storage circuit for setting it with a pulse when its satellite control is connected via said input bus to said master control, and further means operated by said bistable storage circuit when its satellite control is connected the next time to said master control, whereby the said bistable storage circuit is set and checked in one time period to insure its correct operation prior to its use at a subsequent time to operate said further means.
Claim 50
Dependent Claim
89 words
The apparatus of claim 40 wherein said first group of circuits in at least one given satellite control is further divided into a third group of circuits and a fourth group of circuits, and during the time when said given satellite control is connected to said master control, the control signal on said given one of said control lines is generated (1) by said third group of circuits during one portion of such time and (2) by said fourth group of circuits during the remaining portion of such time.
Claim 51
Dependent Claim
91 words
A data processing system including a self-diagnostic capability for automatically detecting and indicating the location of malfunctions, said data processing system including: a control device, a plurality of input-output devices connected via data and control lines to the control device, said input-output devices being operated to transfer and receive data under the direction of the control device, and said control device including first means to check the parity of signals on the control lines and second means to indicate an error or malfunction if such is detected by the first means.
Claim 52
Dependent Claim
91 words
A data processing system including a self-diagnostic capability for automatically detecting and indicating the location of malfunctions, said data processing system including: a control device, a plurality of input-output devices connected via data and control lines to the control device, said input-output devices being operated to transfer and receive data under the direction of the control device, and said control device including first means to check the parity of signals on the control lines and second means to indicate an error or malfunction if such is detected by the first means.
Claim 53
Dependent Claim
43 words
The apparatus of claim 44 wherein the first means includes third means to check the parity of control signals supplied to the control device, and fourth means to check the parity of control signals supplied by the control device to the input-output devices.
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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) | 1974-05-17 | 1974-11-16 | 1975-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-17 | 1978-11-16 | 1979-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-17 | 1982-11-16 | 1983-05-18 | $7700.00 | Window Closed / Lapsed |