US3735098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording medium feed system for reader of data processing equipment
Assignee: Ricoh Co Ltd
•
Filing: 1971-08-09
•
Granted: 1973-05-22
•
Expires: 1991-08-09
Abstract
Abstract The feed of a recording medium is initiated by a drive means which is energized in response to a first readout instruction signal from a master such as a punch typewriter or electronic computer. Upon completion of transmission of one character data, a sync signal is mechanically generated and is compared with a second readout instruction signal from the master in a timing control circuit. When the sync signal is generated prior to the second readout instruction signal, the drive means is deenergized in response to the sync signal to thereby stop the recording medium and is again energized in response to the second readout instruction signal to thereby again initiate the feed. When the second readout instruction signal is generated prior to the sync signal, the drive means is kept energized even when the sync signal is generated so as to continue the feed of recording medium. The above cyclic operation is repeated in response to the succeeding readout instruction signals.
Inventors
- 👤 S Hirata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:06
CPC Classifications
G; G06; G06K; G06K7/00; G06K7/01; G06K7/016; G06K13/00; G06K13/18; G06K13/20
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
127 words
A recording medium feed system in readers of data processing equipment having a master unit and a reader unit connected together and character data carried on a recording medium in said reader unit, said system comprising means for comparing the time when a first readout instruction signal arrives from said master with the time when a sync signal arrives from said reader, said sync signal being generated upon completion of transmission of one set of character data from said reader to said master, means for intermittently advancing said recording medium when said sync signal arrives prior to the arrival of said first readout instruction, and means for continuously advancing said recording medium when said first readout instruction signal arrives prior to the arrival of said sync signal.
Claim 2
Dependent Claim
127 words
A recording medium feed system in readers of data processing equipment having a master unit and a reader unit connected together and character data carried on a recording medium in said reader unit, said system comprising means for comparing the time when a first readout instruction signal arrives from said master with the time when a sync signal arrives from said reader, said sync signal being generated upon completion of transmission of one set of character data from said reader to said master, means for intermittently advancing said recording medium when said sync signal arrives prior to the arrival of said first readout instruction, and means for continuously advancing said recording medium when said first readout instruction signal arrives prior to the arrival of said sync signal.
Claim 3
Dependent Claim
21 words
A recording medium feed system as set forth in claim 1, wherein said sync signal is mechanically generated by said reader.
Claim 4
Dependent Claim
100 words
A recording medium feed system as set forth in claim 2, comprising said drive means for feeding a recording medium, means for energizing said drive means in response to the arrival of said first readout instruction signal from said master, means for de-energizing said drive means in response to said mechanical sync signal, means for re-energizing said drive means in response to the arrival of a second readout instruction signal from said master, and means for maintaining said drive means energized when said mechanical sync signal is generated after the arrival of said second readout instruction signal from said master.
Claim 5
Dependent Claim
110 words
A recording medium feed system as set forth in claim 3, comprising means for mechanically generating a mechanical sync signal representing the completion of transmission of one character data to said master, and wherein said means for comparing in time the arrival of the second readout instruction signal from said master with the arrival of the mechanical sync signal comprises a timing control for energizing said drive means in response to the mechanical sync signal when the mechanical sync signal arrives prior to the arrival of said second readout instruction signal and maintaining said drive means energized when the mechanical sync signal arrives later than said second readout instruction signal.
Claim 6
Dependent Claim
225 words
A recording medium feed system as set forth in claim 4, wherein said reader is capable of reading out data recorded upon a recording medium and transmitting the readout data to said master, said reader comprising a. said drive means to be energized during a predetermined time in response to the arrival of the readout instruction signal from said master for initiating the feEding of said recording medium, b. hold means energized by said drive means for holding the feed of said recording medium after said drive means is de-energized, c. said means for mechanically generating a mechanical sync signal representing the completion of transmission of one set of character data by said reader to said master, and d. said timing control means for comparing in time the arrival of the second readout instruction signal from said master with the mechanical sync signal for de-energizing said hold means in response to said mechanical sync signal and for energizing said drive means in response to said second readout instruction signal when said mechanical sync signal arrives prior to the arrival of said mechanical sync signal and not to energize said drive means in response to said second readout instruction signal and not to deenergize said hold means in response to said mechanical sync signal when second readout instruction signal arrives later than said mechanical sync signal.
Claim 7
Dependent Claim
48 words
A recording medium feed system as specified in claim 5, comprising a magnet wherein said drive means comprises a monostable multivibrator and said hold means comprises a flip-flop whereby said recording medium is fed when said magnet is energized by current from said monostable multivibrator or said flip-flop.
Claim 8
Dependent Claim
66 words
A recording medium feed system as specified in claim 6, wherein the readout instruction signal is generated by said master only after a signal representing the completion of readout by said reader is received, and said signal representing the completion of readout by said reader is generated as to delay the output signal from said drive means and said mechanical sync signal by a predetermined amount.
Claim 9
Dependent Claim
27 words
A recording medium feed system as specified in claim 6, wherein the output current from said flip-flop is lower in magnitude than that from said monostable multivibrator.
Claim 10
Independent Claim
115 words
A method for driving a recording feed system in readers of data processing equipment having a master unit and a reader unit connected together, said method comprising generating a first readout instruction signal from said master, generating a sync signal by said reader unit upon completion of transmission of one set of character data from said reader to said master, comparing the time of generation of said first readout instruction signal and said sync signal, intermittently advancing a recording medium when said sync signal is generated prior to the generation of said first readout instruction signal, and continuously advancing said recording medium when said first readout instruction signal is generated prior to said sync signal.
Claim 11
Independent Claim
115 words
A method for driving a recording feed system in readers of data processing equipment having a master unit and a reader unit connected together, said method comprising generating a first readout instruction signal from said master, generating a sync signal by said reader unit upon completion of transmission of one set of character data from said reader to said master, comparing the time of generation of said first readout instruction signal and said sync signal, intermittently advancing a recording medium when said sync signal is generated prior to the generation of said first readout instruction signal, and continuously advancing said recording medium when said first readout instruction signal is generated prior to said sync signal.
Claim 12
Dependent Claim
92 words
A method for driving the recording medium feed system as set forth in claim 9, comprising energizing a drive means for feeding a recording medium in response to the arrival of said first readout instruction signal from a master, de-energizing said drive means in response to said mechanical sync signal, re-energizing said drive means in response to the arrival of a second readout instruction signal from said master, and maintaining said drive means energized when said mechanical signal is generated after the arrival of said second readout instruction signal from said master.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |