US3666880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit arrangement for the correction of time errors in electrical signals received from an information carrier
Assignee: Robert Bosch Fernsehanlagen GmbH
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Filing: 1969-04-25
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Granted: 1972-05-30
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Expires: 1989-04-25
Abstract
Abstract In a color TV system preferably using a tape for storing information carrying signals, which signals are color TV signals, a circuit for correcting time errors in the signals removed from said information storing means, comprising storage means, means for producing read-in pulses from the color burst of the TV signals, the read-in pulses containing said time errors, switch means connecting the read-in pulse producing means to the storage means for inserting the instantaneous value of the information carrying signals into the storage means at the rate of the readin pulses, means for producing read-out pulses from a reference signal which is free from such time errors, switch means connecting the read-out pulse producing means to the storage means for reading out the information in the storage means at the rate of the read-out pulses and output means for receiving the time-error free information containing signals.
Inventors
- 👤 Gerhard Krause
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:54
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/79; H04N9/87; H04N9/89; H04N9/893
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
226 words
In a system including means for deriving color television information carrying signals, a circuit for correcting time errors in said signals removed from said information deriving means, comprising storage means, means for producing read-in pulses from the color burst and the horizontal synchronizing signals of said information carrying signals said read-in pulses containing said time errors, means connecting said read-in pulse producing means to said storage means for inserting the instantaneous value of said information carrying signals into said storage means at the rate of said read-in pulses, said storage means storing said instantaneous value of said information carrying signal for a period corresponding to not more than one half the period of the highest transmitted signal frequency, means for producing read-out pulses from a reference signal free from said time errors, means connecting said read-out pulse producing means to said storage means for reading out said information in said storage means at the rate of said read-out pulses, and output means for receiving time-error free information containing signals, wherein the frequency of said read-in and of said read-out pulses is at least of the magnitude corresponding to twice the highest frequency value of the said information carrying signals, the frequencies of said read-in pulses being synchronized with said color burst and said horizontal synchronizing signal and the read-out pulses being synchronized with said reference signal.
Claim 2
Dependent Claim
226 words
In a system including means for deriving color television information carrying signals, a circuit for correcting time errors in said signals removed from said information deriving means, comprising storage means, means for producing read-in pulses from the color burst and the horizontal synchronizing signals of said information carrying signals said read-in pulses containing said time errors, means connecting said read-in pulse producing means to said storage means for inserting the instantaneous value of said information carrying signals into said storage means at the rate of said read-in pulses, said storage means storing said instantaneous value of said information carrying signal for a period corresponding to not more than one half the period of the highest transmitted signal frequency, means for producing read-out pulses from a reference signal free from said time errors, means connecting said read-out pulse producing means to said storage means for reading out said information in said storage means at the rate of said read-out pulses, and output means for receiving time-error free information containing signals, wherein the frequency of said read-in and of said read-out pulses is at least of the magnitude corresponding to twice the highest frequency value of the said information carrying signals, the frequencies of said read-in pulses being synchronized with said color burst and said horizontal synchronizing signal and the read-out pulses being synchronized with said reference signal.
Claim 3
Dependent Claim
54 words
The combination as claimed in claim 1, including first switch means connected between said storage means and said read-in pulse producing means, said read-in pulses controlling the operation of said switch means, second switch means connected between said read-out pulse producing means and said storage device, said read-out pulses controlling said second switch means.
Claim 4
Dependent Claim
18 words
The combination as claimed in claim 2, wherein said storage means is a single capacitive type storage device.
Claim 5
Dependent Claim
53 words
The combination as claimed in claim 2, wherein said storage means comprises a plurality of capacitive type storage devices connected in parallel circuit relationship with each other, said first switch means and said second switch means comprising a plurality of switches corresponding in number to the number of said plurality of storage devices.
Claim 6
Dependent Claim
16 words
The combination as claimed in claim 2, wherein said switch means comprises an electronic switching device.
Claim 7
Dependent Claim
49 words
The combination as claimed in claim 4, including delay means connected between adjacent ones of said plurality of switches in said first and in said second switch means, each of said delay means delaying said read-in and read-out signals by a predetermined increment of said read-in and read-out frequency.
Claim 8
Dependent Claim
36 words
The combination as claimed in claim 1, wherein said read-out pulses are derived from a reference color carrier and from a comparing signal having a frequency corresponding to the horizontal frequency of said color television signal.
Claim 9
Dependent Claim
95 words
The combination as claimed in claim 7, including means for producing an auxiliary signal from each of said horizontal synchronizing signals and from said comparing signal, the frequency of said auxiliary signal having a magnitude multiple the magnitude of the line frequency of said color television signal, said read-in and read-out pulses being produced from the respective ones of said auxiliary signals and, means for correcting the phase of said read-in pulses by said color carrier containing said time errors and, means for correcting the phase of said read-out signals by said reference color carrier.
Claim 10
Dependent Claim
68 words
The combination as claimed in claim 8, wherein each of said phase correcting means comprises a bistable multivibrator having two stable states, said color carrier containing said time errors transferring said multivibrator into one of said stable states, wherein said read-in pulse is produced by said multivibrator, said reference color carrier transferring said multivibrator into the other of said stable states thereof, wherein said read-out pulse is produced.
Claim 11
Dependent Claim
15 words
The combination as claimed in claim 1, wherein said information storing means is a tape.
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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) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |