Patent EP0194744A2 successfully refreshed from Google Patents.
EP0194744A2
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Method and appartus for providing histogram data
Assignee: Tektronix Inc
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Filing: 1986-02-05
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Granted: —
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Expires: 2006-02-05
Abstract
Abstract Data for a histogram is provided through generation of a pseudo-random sequence in a shift register connected in predetermined feedback relation. A histogram element storage location is addressed in a random access memory and is used for loading the shift register in parallel when an event corresponding to that element takes place. The shift register proceeds from that point to increment a pseudo-random sequence for the duration of the event, and the concluding value of the sequence is loaded back into the random access memory location at the conclusion of the event. A network between the random access memory and the shift register loads the shift register with a pattern that replicates the pattern that would exist in the shift register if the shift register had already been loaded and the data therein was shifted once.
Inventors
- 👤 Arnold Frisch
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 20:36
CPC Classifications
G; G06; G06F; G06F17/00; G06F17/10; G06F17/18
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
78 words
The method of providing data for a histogram, said method comprising: providing storage for a plurality of values representing elements of said histogram, in response to the occurrence of an event of the type portrayed by a given element of said histogram, generating a sequence of values for the duration of said event, and supplying a storage location representing said given element of said histogram with the value corresponding to said sequence at the conclusion of said event.
Claim 2
Independent Claim
78 words
The method of providing data for a histogram, said method comprising: providing storage for a plurality of values representing elements of said histogram, in response to the occurrence of an event of the type portrayed by a given element of said histogram, generating a sequence of values for the duration of said event, and supplying a storage location representing said given element of said histogram with the value corresponding to said sequence at the conclusion of said event.
Claim 3
Dependent Claim
13 words
The method according to claim 1 wherein said sequence comprises a pseudo-random sequence.
Claim 4
Dependent Claim
36 words
The method according to claim 2 including generating said pseudo-random sequence by shifting data in a shift register, and feeding back the contents of said shift register to a serial input thereof in predetermined logical combination.
Claim 5
Dependent Claim
28 words
The method according to claim 2 including starting said pseudo-random sequence with a value corresponding to a value theretofore stored for representing said given element of said histogram.
Claim 6
Dependent Claim
30 words
The method according to claim 1 including storing said plurality of values in a random access memory, wherein different addressed locations store values corresponding to different elements of said histogram.
Claim 7
Independent Claim
50 words
The method of providing data for a histogram, said method comprising: detecting an event of the type portrayed by an element of said histogram, generating a pseudo-random sequence of values in response to said detection, and providing an element of said histogram corresponding to a value of said pseudo-random sequence.
Claim 8
Independent Claim
50 words
The method of providing data for a histogram, said method comprising: detecting an event of the type portrayed by an element of said histogram, generating a pseudo-random sequence of values in response to said detection, and providing an element of said histogram corresponding to a value of said pseudo-random sequence.
Claim 9
Independent Claim
55 words
The method of providing data for a histogram, said method comprising: storing a value representing input increments at a given level of said histogram, generating a pseudo-random sequence in response to occurrence of further input increments at said given level of said histogram, and, in response thereto, storing a new value from said pseudo-random sequence.
Claim 10
Independent Claim
55 words
The method of providing data for a histogram, said method comprising: storing a value representing input increments at a given level of said histogram, generating a pseudo-random sequence in response to occurrence of further input increments at said given level of said histogram, and, in response thereto, storing a new value from said pseudo-random sequence.
Claim 11
Dependent Claim
15 words
The method according to claim 7 wberein said new value replaces the previously stored value.
Claim 12
Dependent Claim
20 words
The method according to claim 7 including starting said pseudo-random sequence with a value corresponding to the previously stored value.
Claim 13
Independent Claim
42 words
The method of providing data for a floating point histogram, said method comprising: detecting an event of the type portrayed by an element of said histogram, and generating a pseudo-random sequence of values corresponding to the mantissa of said floating point histogram.
Claim 14
Independent Claim
42 words
The method of providing data for a floating point histogram, said method comprising: detecting an event of the type portrayed by an element of said histogram, and generating a pseudo-random sequence of values corresponding to the mantissa of said floating point histogram.
Claim 15
Dependent Claim
29 words
The method according to claim 10 further including generating a sequence of values corresponding to the characteristic of said floating point histogram in response modulo carries of said mantissa.
Claim 16
Dependent Claim
92 words
Apparatus for providing data for a histogram, said apparatus comprising: a randon access memory having a plurality of addressable locations, a shift register adapted to be loaded in parallel, means for loading data from a memory location in parallel into said shift register, and means for transferring the contents of said shift register back into said random access memory, wherein said shift register is interconnected in feedback relation to provide a predetermined number sequence as data in shifted therein, said sequence being representative of the number of times shifting has taken place.
Claim 17
Dependent Claim
92 words
Apparatus for providing data for a histogram, said apparatus comprising: a randon access memory having a plurality of addressable locations, a shift register adapted to be loaded in parallel, means for loading data from a memory location in parallel into said shift register, and means for transferring the contents of said shift register back into said random access memory, wherein said shift register is interconnected in feedback relation to provide a predetermined number sequence as data in shifted therein, said sequence being representative of the number of times shifting has taken place.
Claim 18
Dependent Claim
50 words
The apparatus according to claim 12 wherein said means for loading data from a memory location into said shift register comprises logical means for replicating the pattern that would exist in said shift register if the data from said memory location were already in said shift register and incrementally shifted.
Claim 19
Dependent Claim
39 words
The apparatus according to claim 12 including gate means receiving parallel outputs of said shift register and providing a logical output coupled to a serial input of said shift register to supply feedback whereby said predetermined sequence is generated.
References Cited (Backward Citations)
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