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AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsMitsuaki Oshima, Yoshihiro Gohara, Yoshinori Kobayashi, Shozo Fujiwara, Tsuyoshi Uemura
Estimating the term…
A data processing apparatus has a first processing unit for processing an input data, a second processing unit responsive to the data processed by the first processing unit for executing a processing dependent on the data and producing a display data, and a display unit having a display drive unit and a display device for displaying the display data. The second processing unit is selectively inactivated and activated under control of the first processing unit to reduce power consumption in the second processing unit. The display drive unit is also selectively inactivated and activated under control of the first processing unit to reduce power consumption in the display unit. The display device has a memory function that maintains its display image even when supply of a display drive signal from the display drive unit is stopped, so that a latest image before inactivation of the second processing unit and/or the display drive unit for power consumption reduction is visible by an operator during the inactivated and low power consumption state of the apparatus.
A liquid crystal display apparatus capable of being powered by a battery or by an external power source, said liquid crystal display apparatus comprising:
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
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Monitoring of peripheral devices: of display devices
Means for saving power: power management, i.e. event-based initiation of a power-saving mode
Power saving in peripheral device: power saving in display device
Power saving characterised by the action undertaken: by switching off individual functional units in the computer system
Term end not estimated
1. Field of the Invention
The present invention relates to a data processing apparatus provided with a display device.
2. Description of the Prior Art
FIG. 1 is a block diagram of a data processing apparatus showing a first embodiment of the present invention;
FIG. 2 is a timing chart;
FIG. 3 is a view showing the arrangement of a display unit;
Preferred embodiments of the present invention will be described referring to the accompanying drawings.
Embodiment 1
FIG. 1 is a block diagram of a data processing apparatus showing a first embodiment of the present invention.