Patent EP0012232A1 successfully refreshed from Google Patents.
EP0012232A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Apparatus for switching over the operating frequency of a digital computer
Assignee: Denso Corp
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Filing: 1979-11-15
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Granted: —
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Expires: 1999-11-15
Abstract
Abstract In a control system having an electric power source, a controlled load kept operative when the electric power is supplied from the power source and a digital computer programmed to control the operation of the controlled load by executing stored instructions in timed relation with periodic clock pulses, the digital computer is constructed as a C-MOS type and a switch-over circuit is provided to keep the frequency of the periodic clock pulses at a high and low values when the electric power supplied to keep the controlled load operative is sufficient and insufficient, respectively.
Inventors
- 👤 Atutoshi Okamoto
- 👤 Akira Shibata
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 08:22
CPC Classifications
G; G06; G06F; G06F1/00; G06F1/26; G06F1/32; G06F1/3203; G06F1/3234; G06F1/324; Y; Y02; Y02D; Y02D10/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
176 words
In a control system having an electric power source, a controlled load kept operative and inoperative when the supply of electric power is switched on and off respectively, a switch connected to switch on and off the supply of electric power from said electric power source to said controlled load, and a digital computer kept supplied with the electric power from said electric power source and programmed to control the operation of said controlled load by executing stored instructions in timed relation with periodic pulses, the improvement comprising: said digital computer being a complementary metal-oxide semiconductor type; means responsive to the electric power supplied to said controlled load and effective to produce a first and second outputs indicative of the sufficiency and insufficiency of the electric power supplied to said controlled load respectively; and means responsive to said first and second outputs and effective to keep the frequency of said periodic pulses at a first and second values in response to said first and second outputs respectively, said second value being lower than said first value.
Claim 2
Dependent Claim
176 words
In a control system having an electric power source, a controlled load kept operative and inoperative when the supply of electric power is switched on and off respectively, a switch connected to switch on and off the supply of electric power from said electric power source to said controlled load, and a digital computer kept supplied with the electric power from said electric power source and programmed to control the operation of said controlled load by executing stored instructions in timed relation with periodic pulses, the improvement comprising: said digital computer being a complementary metal-oxide semiconductor type; means responsive to the electric power supplied to said controlled load and effective to produce a first and second outputs indicative of the sufficiency and insufficiency of the electric power supplied to said controlled load respectively; and means responsive to said first and second outputs and effective to keep the frequency of said periodic pulses at a first and second values in response to said first and second outputs respectively, said second value being lower than said first value.
Claim 3
Dependent Claim
125 words
The improvement according to claim 1, wherin said electric power source includes a first and second power source means, said first power source means being connected to supply said controlled load with the electric power through said switch, and further comprising: a first diode connected to supply said digital computer and said outputs responsive means with the electric power from said first power source means through said switch in a simultaneous relation with the supply of electric power from said first power source means to said controlled load; and a second diode connected to keep supplying said digital computer and said outputs responsive means with the electric power from said second power source means irrespective of the supply of electric power to said controlled load.
References Cited (Backward Citations)
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