Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Random access memory capable of varying a frequency in active and standby modes










Image Number 4 for United States Patent #4616346.

In a memory selectively operable in an active and a standby mode, a first oscillation signal of a first frequency is produced by an oscillator (35a or 35b) in the standby mode so as to reduce electric power consumption, instead of a second oscillation signal which is produced in the active mode and which has a second frequency higher than the first frequency. The first and the second oscillation signals are selectively supplied as a substrate voltage to a substrate (20) through a substrate voltage production circuit (36). The oscillator may comprise a first circuit portion (46 to 48) for oscillating the second oscillation signal and a capacitor circuit (51 to 53) connected to the first circuit portion through a second circuit portion (56 to 58) in the standby mode so as to generate the second oscillation signal. Alternatively, the oscillator comprises first and second oscillator sections (61 and 67) for generating the first and the second oscillation signals and a selecting circuit (70) for selecting the first and the second oscillation signals. The second oscillation circuit is kept inactive during generation of the first oscillation signal.








 
 
  Recently Added Patents
Oral care implement accessory
Device and process for isolating and cultivating live cells on a filter or extracting their genetic material
System for collecting computer application usage data of targeted application programs executed on a plurality of client devices
Commissioning incoming packet switched connections
Memory circuit and method of forming the same using reduced mask steps
System and method for creating, managing and trading hedge portfolios
Sequential control device for a striking mechanism
  Randomly Featured Patents
Driving device for a vortex mixing apparatus
Wound drainage suction relief
Geothermal heat converter
Method and apparatus for producing a controlled preload on a transducer assembly
Counting biological agents on biological growth plates
Power factor correction (PFC) circuit and method therefor
Guide apparatus for copy masters
Mixing system and method
Smoking article with a restrictor
Determination of surety quote metric