Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04Q—SELECTING
  • H04Q3/00—Selecting arrangements
  • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
• • G—PHYSICS
  • G06—COMPUTING; CALCULATING OR COUNTING
  • G06F—ELECTRIC DIGITAL DATA PROCESSING
  • G06F12/00—Accessing, addressing or allocating within memory systems or architectures
  • G06F12/14—Protection against unauthorised use of memory or access to memory
• • G—PHYSICS
  • G06—COMPUTING; CALCULATING OR COUNTING
  • G06F—ELECTRIC DIGITAL DATA PROCESSING
  • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
• • G—PHYSICS
  • G06—COMPUTING; CALCULATING OR COUNTING
  • G06F—ELECTRIC DIGITAL DATA PROCESSING
  • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
  • G06F13/14—Handling requests for interconnection or transfer
  • G06F13/16—Handling requests for interconnection or transfer for access to memory bus
  • G06F13/1668—Details of memory controller
  • G06F13/1689—Synchronisation and timing concerns
• • G—PHYSICS
  • G06—COMPUTING; CALCULATING OR COUNTING
  • G06F—ELECTRIC DIGITAL DATA PROCESSING
  • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
  • G06F13/14—Handling requests for interconnection or transfer
  • G06F13/20—Handling requests for interconnection or transfer for access to input/output bus
  • G06F13/22—Handling requests for interconnection or transfer for access to input/output bus using successive scanning, e.g. polling
• • G—PHYSICS
  • G06—COMPUTING; CALCULATING OR COUNTING
  • G06F—ELECTRIC DIGITAL DATA PROCESSING
  • G06F15/00—Digital computers in general; Data processing equipment in general
  • G06F15/04—Digital computers in general; Data processing equipment in general programmed simultaneously with the introduction of data to be processed, e.g. on the same record carrier
• • G—PHYSICS
  • G06—COMPUTING; CALCULATING OR COUNTING
  • G06F—ELECTRIC DIGITAL DATA PROCESSING
  • G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
  • G06F7/38—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation
  • G06F7/48—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation using non-contact-making devices, e.g. tube, solid state device; using unspecified devices
  • G06F7/491—Computations with decimal numbers radix 12 or 20.
  • G06F7/492—Computations with decimal numbers radix 12 or 20. using a binary weighted representation within each denomination
  • G06F7/493—Computations with decimal numbers radix 12 or 20. using a binary weighted representation within each denomination the representation being the natural binary coded representation, i.e. 8421-code
  • G06F7/494—Adding; Subtracting
  • G06F7/495—Adding; Subtracting in digit-serial fashion, i.e. having a single digit-handling circuit treating all denominations after each other
• • G—PHYSICS
  • G06—COMPUTING; CALCULATING OR COUNTING
  • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
  • G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
  • G11B20/10—Digital recording or reproducing
  • G11B20/14—Digital recording or reproducing using self-clocking codes
  • G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
  • G11B20/1407—Digital recording or reproducing using self-clocking codes characterised by the use of two levels code representation depending on a single bit, i.e. where a one is always represented by a first code symbol while a zero is always represented by a second code symbol
  • G11B20/1419—Digital recording or reproducing using self-clocking codes characterised by the use of two levels code representation depending on a single bit, i.e. where a one is always represented by a first code symbol while a zero is always represented by a second code symbol to or from biphase level coding, i.e. to or from codes where a one is coded as a transition from a high to a low level during the middle of a bit cell and a zero is encoded as a transition from a low to a high level during the middle of a bit cell or vice versa, e.g. split phase code, Manchester code conversion to or from biphase space or mark coding, i.e. to or from codes where there is a transition at the beginning of every bit cell and a one has no second transition and a zero has a second transition one half of a bit period later or vice versa, e.g. double frequency code, FM code
• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
  • G11B20/10—Digital recording or reproducing
  • G11B20/14—Digital recording or reproducing using self-clocking codes
  • G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
  • G11B20/1423—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code
• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
  • G11B20/10—Digital recording or reproducing
  • G11B20/16—Digital recording or reproducing using non self-clocking codes, i.e. the clock signals are either recorded in a separate clocking track or in a combination of several information tracks
• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11C—STATIC STORES
  • G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
  • G11C11/21—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements
  • G11C11/22—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using ferroelectric elements
• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03K—PULSE TECHNIQUE
  • H03K21/00—Details of pulse counters or frequency dividers
• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
  • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
  • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
  • H03M7/02—Conversion to or from weighted codes, i.e. the weight given to a digit depending on the position of the digit within the block or code word
  • H03M7/06—Conversion to or from weighted codes, i.e. the weight given to a digit depending on the position of the digit within the block or code word the radix thereof being a positive integer different from two
  • H03M7/08—Conversion to or from weighted codes, i.e. the weight given to a digit depending on the position of the digit within the block or code word the radix thereof being a positive integer different from two the radix being ten, i.e. pure decimal code
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
  • H04L12/00—Data switching networks
  • H04L12/54—Store-and-forward switching systems 
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
  • H04L13/00—Details of the apparatus or circuits covered by groups H04L15/00 or H04L17/00
  • H04L13/02—Details not particular to receiver or transmitter
  • H04L13/08—Intermediate storage means
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
  • H04L25/00—Baseband systems
  • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
  • H04L25/20—Repeater circuits; Relay circuits
  • H04L25/24—Relay circuits using discharge tubes or semiconductor devices
  • H04L25/242—Relay circuits using discharge tubes or semiconductor devices with retiming
  • H04L25/245—Relay circuits using discharge tubes or semiconductor devices with retiming for start-stop signals
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04M—TELEPHONIC COMMUNICATION
  • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
  • H04M15/04—Recording calls, or communications in printed, perforated or other permanent form
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04M—TELEPHONIC COMMUNICATION
  • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
  • H04M15/10—Metering calls from calling party, i.e. A-party charged for the communication
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04M—TELEPHONIC COMMUNICATION
  • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
  • H04M15/38—Charging, billing or metering by apparatus other than mechanical step-by-step counter type
• • G—PHYSICS
  • G06—COMPUTING; CALCULATING OR COUNTING
  • G06F—ELECTRIC DIGITAL DATA PROCESSING
  • G06F2207/00—Indexing scheme relating to methods or arrangements for processing data by operating upon the order or content of the data handled
  • G06F2207/492—Indexing scheme relating to groups G06F7/492 - G06F7/496
  • G06F2207/4923—Incrementer or decrementer

Landscapes

• Engineering & Computer Science (AREA)
• Theoretical Computer Science (AREA)
• Signal Processing (AREA)
• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Computer Networks & Wireless Communication (AREA)
• General Engineering & Computer Science (AREA)
• Computing Systems (AREA)
• Computer Hardware Design (AREA)
• Computer Security & Cryptography (AREA)
• Power Engineering (AREA)
• Computational Mathematics (AREA)
• Mathematical Analysis (AREA)
• Mathematical Optimization (AREA)
• Pure & Applied Mathematics (AREA)
• Signal Processing For Digital Recording And Reproducing (AREA)
• Plural Heterocyclic Compounds (AREA)
• Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
• Electronic Switches (AREA)
• Complex Calculations (AREA)
• Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
• Telephonic Communication Services (AREA)
• Communication Control (AREA)
• Time-Division Multiplex Systems (AREA)
• Read Only Memory (AREA)
• Direct Current Feeding And Distribution (AREA)
• Supply And Distribution Of Alternating Current (AREA)
• Monitoring And Testing Of Exchanges (AREA)
• Digital Magnetic Recording (AREA)
• Arrangements For Transmission Of Measured Signals (AREA)
• Recording Or Reproducing By Magnetic Means (AREA)
• Magnetic Heads (AREA)
• Silver Salt Photography Or Processing Solution Therefor (AREA)
• Power Conversion In General (AREA)
• Photoreceptors In Electrophotography (AREA)
• Lubricants (AREA)
• Color Printing (AREA)

Applications Claiming Priority (4)

Publications (1)

Family

ID=32996118

Family Applications (6)

Family Applications After (5)

Country Status (7)

Families Citing this family (54)

Family Cites Families (55)

• 0
  • NL NL228663D patent/NL228663A/xx unknown
  • US US2927305D patent/US2927305A/en not_active Expired - Lifetime
  • NL NL99218D patent/NL99218C/xx active
  • NL NL96174D patent/NL96174C/xx active
  • NL NL220663D patent/NL220663A/xx unknown
  • BE BE527413D patent/BE527413A/xx unknown
  • BE BE532922D patent/BE532922A/xx unknown
  • BE BE568569D patent/BE568569A/xx unknown
  • NL NL191886D patent/NL191886A/xx unknown
  • BE BE530180D patent/BE530180A/xx unknown
  • NL NL85732D patent/NL85732C/xx active
  • BE BE527585D patent/BE527585A/xx unknown
• 1951
  • 1951-05-23 GB GB12818/52A patent/GB744358A/en not_active Expired
  • 1951-05-23 GB GB12816/52A patent/GB744356A/en not_active Expired
  • 1951-05-23 GB GB12817/52A patent/GB744357A/en not_active Expired
• 1952
  • 1952-05-21 GB GB21248/54A patent/GB744400A/en not_active Expired
  • 1952-05-22 US US289386A patent/US2865563A/en not_active Expired - Lifetime
  • 1952-05-22 US US289383A patent/US2838745A/en not_active Expired - Lifetime
  • 1952-05-22 US US289385A patent/US2868447A/en not_active Expired - Lifetime
  • 1952-05-23 CH CH320958D patent/CH320958A/de unknown
  • 1952-05-23 CH CH329941D patent/CH329941A/de unknown
  • 1952-05-23 CH CH317179D patent/CH317179A/de unknown
  • 1952-05-23 FR FR1065479D patent/FR1065479A/fr not_active Expired
  • 1952-05-23 CH CH322831D patent/CH322831A/de unknown
  • 1952-05-23 DE DEI5891A patent/DE1120184B/de active Pending
  • 1952-05-23 CH CH320960D patent/CH320960A/de unknown
  • 1952-05-23 CH CH320959D patent/CH320959A/de unknown
• 1953
  • 1953-03-25 GB GB8231/53A patent/GB786721A/en not_active Expired
  • 1953-03-25 GB GB4717/54A patent/GB786723A/en not_active Expired
  • 1953-07-07 GB GB18843/53A patent/GB786722A/en not_active Expired
• 1954
  • 1954-03-18 FR FR66637D patent/FR66637E/fr not_active Expired
  • 1954-03-18 US US417193A patent/US3001021A/en not_active Expired - Lifetime
  • 1954-03-18 US US417107A patent/US3025351A/en not_active Expired - Lifetime
  • 1954-03-18 US US417106A patent/US2932009A/en not_active Expired - Lifetime
  • 1954-03-18 US US417071A patent/US3130300A/en not_active Expired - Lifetime
  • 1954-03-19 CH CH337571D patent/CH337571A/de unknown
  • 1954-03-19 DE DEI8414A patent/DE1016768B/de active Pending
  • 1954-03-20 DE DEI8412A patent/DE973024C/de not_active Expired
  • 1954-03-20 DE DEI8411A patent/DE955429C/de not_active Expired
  • 1954-03-20 DE DEI8413A patent/DE970229C/de not_active Expired
  • 1954-03-24 DE DEI8445A patent/DE1025447B/de active Pending
  • 1954-03-24 FR FR69051D patent/FR69051E/fr not_active Expired
  • 1954-03-25 CH CH332298D patent/CH332298A/de unknown
  • 1954-03-25 CH CH332299D patent/CH332299A/de unknown
  • 1954-03-30 GB GB9329/54A patent/GB786724A/en not_active Expired
  • 1954-07-06 FR FR69052D patent/FR69052E/fr not_active Expired
  • 1954-07-07 CH CH361829D patent/CH361829A/de unknown
  • 1954-07-07 DE DEI8883A patent/DE1088089B/de active Pending
  • 1954-10-27 FR FR69054D patent/FR69054E/fr not_active Expired
  • 1954-11-04 FR FR69056D patent/FR69056E/fr not_active Expired
  • 1954-12-17 FR FR72305D patent/FR72305E/fr not_active Expired
• 1955
  • 1955-03-29 FR FR72306D patent/FR72306E/fr not_active Expired
  • 1955-05-25 US US511093A patent/US2807004A/en not_active Expired - Lifetime
  • 1955-06-24 GB GB18346/55A patent/GB794126A/en not_active Expired
  • 1955-06-24 FR FR72307D patent/FR72307E/fr not_active Expired
• 1956
  • 1956-02-02 FR FR72309D patent/FR72309E/fr not_active Expired
• 1958
  • 1958-06-06 US US740435A patent/US3039683A/en not_active Expired - Lifetime
  • 1958-06-19 DE DEI15002A patent/DE1082435B/de active Pending

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