US4743843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Display signal generator device
Assignee: Mitsubishi Electric Corp
•
Filing: 1985-08-30
•
Granted: 1988-05-10
•
Expires: 2005-08-30
Abstract
Abstract A display signal generator device which allows the pulse width of a digital signal to be constant and the pulse repetition period to be proportional to the analog amount of an input signal so as to produce a signal to be displayed even by an analog or digital display unit 7 or 6, thereby obtaining a digital/analog common signal of average value proportional to the frequency even with the pulse signal. In order to maintain the pulse width constant, only a monostable multivibrator is, for example, added, thereby providing an inexpensive display signal generator device.
Inventors
- 👤 Hideaki Tada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:09
CPC Classifications
G; G01; G01R; G01R13/00; G01D; G01D7/00; G01D7/002
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
97 words
A display signal generating device having a digital to frequency converter for converting digital data representing the level of a signal to be displayed into a frequency signal in the form of a pulse train, said device comprising a frequency divider for dividing the frequency of the output signal of the digital to frequency converter to output a signal for a digital display unit, and a pulse generator for providing a predetermined pulse width in the signal of the frequency divider to output a signal for an analog display unit from the signal of the frequency divider.
Claim 2
Dependent Claim
97 words
A display signal generating device having a digital to frequency converter for converting digital data representing the level of a signal to be displayed into a frequency signal in the form of a pulse train, said device comprising a frequency divider for dividing the frequency of the output signal of the digital to frequency converter to output a signal for a digital display unit, and a pulse generator for providing a predetermined pulse width in the signal of the frequency divider to output a signal for an analog display unit from the signal of the frequency divider.
Claim 3
Dependent Claim
17 words
The display signal generator device according to claim 1 wherein said pulse generator is a one-shot multivibrator.
Claim 4
Dependent Claim
32 words
The display signal generator device according to claim 1 wherein said pulse generator is a counter for generating a pulse having a predetermined pulse width by the counting of a clock signal.
References Cited (Backward Citations)
US3689835A
Cited
JPS4887873A
Cited
US3794916A
Cited
JPS50119680A
Cited
US4081745A
Cited
JPS5427674A
Cited
JPS5553461A
Cited
JPS55113969A
Cited
US4415855A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-05-10 | 1991-11-09 | 1992-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-10 | 1995-11-09 | 1996-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-10 | 1999-11-09 | 2000-05-10 | $7700.00 | Window Closed / Lapsed |