Patent US5029005A successfully refreshed from Google Patents.
Patent US5448288A successfully refreshed from Google Patents.
US5448288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic adjustment circuit for analog control unit
Assignee: Orion Electric Co Ltd
•
Filing: 1993-04-23
•
Granted: 1995-09-05
•
Expires: 2013-04-23
Abstract
Abstract An automatic adjustment circuit for an analog control unit comprising a detection circuit and a D/A control circuit, said detection circuit being connected to said analog control unit to detect gain errors in said analog control unit and to input a determination signal for the determination of the errors detected to a control microcomputer installed in the apparatus and said D/A control circuit is operated in response to receiving signal from said control microcomputer to accomplish the adjustment.
Inventors
- 👤 Noboru Oue
- 👤 Yoshitsugu Nagata
- 👤 Hiroshi Otobe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:19
CPC Classifications
H; H04; H04N; H04N17/00; H04N17/04; H04N5/00; H04N5/44; H04N5/52
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
119 words
An automatic adjustment circuit for an analog control unit contained within an electronic apparatus comprising: a control microcomputer contained within the electronic apparatus for controlling said apparatus; a voltage comparison detection circuit connected to said analog control unit for detecting gain errors in said analog control unit by comparing an error voltage with a preset standard voltage and for inputting a determination signal in accordance with a determination of the detected gain errors to said control microcomputer; and a D/A control circuit operated in response to a receiving signal from said control microcomputer for adjusting the gain error of the analog control unit; wherein said voltage comparison detection circuit is provided within an instrument disposed external to the apparatus.
Claim 2
Dependent Claim
119 words
An automatic adjustment circuit for an analog control unit contained within an electronic apparatus comprising: a control microcomputer contained within the electronic apparatus for controlling said apparatus; a voltage comparison detection circuit connected to said analog control unit for detecting gain errors in said analog control unit by comparing an error voltage with a preset standard voltage and for inputting a determination signal in accordance with a determination of the detected gain errors to said control microcomputer; and a D/A control circuit operated in response to a receiving signal from said control microcomputer for adjusting the gain error of the analog control unit; wherein said voltage comparison detection circuit is provided within an instrument disposed external to the apparatus.
Claim 3
Dependent Claim
24 words
An automatic adjustment circuit as recited in claim 1, further comprising a display operatively connected to the control microcomputer for displaying the adjustment operation.
Claim 4
Dependent Claim
16 words
An automatic adjustment circuit as recited in claim 2, wherein said display comprises a CRT display.
Claim 5
Dependent Claim
113 words
An automatic adjustment circuit for a VIF circuit contained within a television receiver comprising: a control microcomputer contained within the television receiver for controlling said receiver; a voltage comparison detection circuit connected to said VIF circuit for detecting gain errors in said circuit by comparing an error voltage with a preset standard voltage and for inputting a determination signal in accordance with a determination of the detected gain errors to the control microcomputer; and a D/A control circuit operated in response to a signal from said control microcomputer for adjusting the gain error of said VIF circuit; wherein said voltage comparison detection circuit is provided within an instrument disposed external to the receiver.
Claim 6
Dependent Claim
113 words
An automatic adjustment circuit for a VIF circuit contained within a television receiver comprising: a control microcomputer contained within the television receiver for controlling said receiver; a voltage comparison detection circuit connected to said VIF circuit for detecting gain errors in said circuit by comparing an error voltage with a preset standard voltage and for inputting a determination signal in accordance with a determination of the detected gain errors to the control microcomputer; and a D/A control circuit operated in response to a signal from said control microcomputer for adjusting the gain error of said VIF circuit; wherein said voltage comparison detection circuit is provided within an instrument disposed external to the receiver.
Claim 7
Dependent Claim
24 words
An automatic adjustment circuit as recited in claim 4, further comprising a display operatively connected to the control microcomputer for displaying the adjustment operation.
Claim 8
Dependent Claim
16 words
An automatic adjustment circuit as recited in claim 5, wherein said display comprises a CRT display.
Claim 9
Dependent Claim
116 words
An automatic adjustment circuit for a brightness/contrast control circuit used in a television receiver comprising: a control microcomputer contained within the television receiver for controlling said receiver; a voltage comparison detection circuit connected to said brightness/contrast control circuit for detecting gain errors in said circuit by comparing an error voltage with a present standard voltage and for inputting a determination signal in accordance with a determination of the detected gain errors to the control microcomputer; and a D/A control circuit operated in response to a signal from said control microcomputer for adjusting the gain error of said brightness/contrast control circuit; wherein said voltage comparison detection circuit is provided within an instrument disposed external to the apparatus.
Claim 10
Dependent Claim
116 words
An automatic adjustment circuit for a brightness/contrast control circuit used in a television receiver comprising: a control microcomputer contained within the television receiver for controlling said receiver; a voltage comparison detection circuit connected to said brightness/contrast control circuit for detecting gain errors in said circuit by comparing an error voltage with a present standard voltage and for inputting a determination signal in accordance with a determination of the detected gain errors to the control microcomputer; and a D/A control circuit operated in response to a signal from said control microcomputer for adjusting the gain error of said brightness/contrast control circuit; wherein said voltage comparison detection circuit is provided within an instrument disposed external to the apparatus.
Claim 11
Dependent Claim
18 words
An automatic adjustment circuit as recited in claim 7, further comprising a display for displaying the adjustment operation.
Claim 12
Dependent Claim
16 words
An automatic adjustment circuit as recited in claim 8, wherein said display comprises a CRT display.
Claim 13
Dependent Claim
120 words
An automatic adjustment circuit for a brightness/contrast control circuit used in a television receiver comprising: a control microcomputer contained within the television receiver for controlling said receiver; a voltage comparison detection circuit connected to said brightness/contrast control circuit for detecting gain errors in said circuit by comparing an error voltage with a present standard voltage and for inputting a determination signal in accordance with a determination of the detected gain errors to said control microcomputer; said control microcomputer including a means for adjusting a duty cycle of a PWM output of an operation signal output from the control microcomputer to said brightness/contrast control circuit; wherein said voltage comparison detection circuit is provided within an instrument disposed external to the receiver.
Claim 14
Dependent Claim
120 words
An automatic adjustment circuit for a brightness/contrast control circuit used in a television receiver comprising: a control microcomputer contained within the television receiver for controlling said receiver; a voltage comparison detection circuit connected to said brightness/contrast control circuit for detecting gain errors in said circuit by comparing an error voltage with a present standard voltage and for inputting a determination signal in accordance with a determination of the detected gain errors to said control microcomputer; said control microcomputer including a means for adjusting a duty cycle of a PWM output of an operation signal output from the control microcomputer to said brightness/contrast control circuit; wherein said voltage comparison detection circuit is provided within an instrument disposed external to the receiver.
Claim 15
Dependent Claim
18 words
An automatic adjustment circuit as recited in claim 10, further comprising a display for displaying the adjustment operation.
Claim 16
Dependent Claim
16 words
An automatic adjustment circuit as recited in claim 11, wherein said display comprises a CRT display.
Claim 17
Dependent Claim
132 words
An automatic adjustment circuit for an analog control unit used in a television receiver comprising: a control microcomputer contained within the television receiver for controlling said receiver; a voltage comparison detection circuit connected to said analog control unit for detecting gain errors in said analog control unit by comparing an error voltage with a preset standard voltage and for inputting a determination signal in accordance with a determination of the detected gain errors to said control microcomputer; a D/A control circuit operated in response to a signal from said control microcomputer for adjusting the gain error of the analog control unit; and a display operatively connected to the control microcomputer for displaying the adjustment operation thereon; wherein said voltage comparison detection circuit is provided within an instrument disposed external to the receiver.
Claim 18
Dependent Claim
132 words
An automatic adjustment circuit for an analog control unit used in a television receiver comprising: a control microcomputer contained within the television receiver for controlling said receiver; a voltage comparison detection circuit connected to said analog control unit for detecting gain errors in said analog control unit by comparing an error voltage with a preset standard voltage and for inputting a determination signal in accordance with a determination of the detected gain errors to said control microcomputer; a D/A control circuit operated in response to a signal from said control microcomputer for adjusting the gain error of the analog control unit; and a display operatively connected to the control microcomputer for displaying the adjustment operation thereon; wherein said voltage comparison detection circuit is provided within an instrument disposed external to the receiver.
References Cited (Backward Citations)
US4178608A
Cited
JPS5419323A
Cited
US4270145A
Cited
JPS59178878A
Cited
US4724364A
Cited
US4625240A
Cited
US4654717A
Cited
US4952917A
Cited
JPS63215116A
Cited
JPH01165230A
Cited
US5233419A
Cited
US4999703A
Cited
US5081523A
Cited
JPH03118526A
Cited
US5241384A
Cited
US5194822A
Cited
US5193223A
Cited
US5260784A
Cited
JPH0564103A
Cited
US5216504A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-09-04 | 1999-03-06 | 1999-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-09-04 | 2003-03-06 | 2003-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-09-04 | 2007-03-06 | 2007-09-05 | $7700.00 | Window Closed / Lapsed |