Data processing device, display control device, semiconductor chip, method of controlling display device, and computer-readable medium

Patent metadata

Field	Value
Publication number	US-9626940-B2
Application number	US-201414190411-A
Country	US
Kind code	B2
Filing date	Feb 26, 2014
Priority date	Feb 28, 2013
Publication date	Apr 18, 2017
Grant date	Apr 18, 2017

Abstract

A data processing device according to embodiments comprises a data converting unit, a selecting unit, a managing unit, a updating unit, and a controller. The data converting unit is configured to convert update-data for updating at least a part of an electronic paper into processed update-data to be displayed. The selecting unit is configured to select an update-control-information identifier to be used for updating the electronic paper with the processed update-data. The managing unit is configured to store the processed update-data and a selected update-control-information identifier on a first memory. The updating unit is configured to instruct a drawing step of the electronic paper using the processed update-data and the update-control-information identifier stored on the first memory. The controller is configured to, when the processed update-data and the update-control-information identifier are stored on the first memory, execute the drawing step of the electronic paper using the processed update-data and the update-control-information identifier stored in the first memory in response to the instruction from the updating unit.

First claim

What is claimed is:

1. A data processing device comprising a processor and/or memory field for:
converting update-data for updating at least a part of an electronic paper into processed update-data to be displayed;
selecting an update-control-information identifier to be used for updating the electronic paper with the processed update-data;
storing the processed update-data and a selected update-control-information identifier on a first memory;
instructing a drawing process of the electronic paper using the processed update-data and the update-control-information identifier stored on the first memory; and
executing, when a first instruction requesting a first drawing process of the electronic paper using the processed update-data and the update-control-information identifier is instructed, the first drawing process using the processed update-data and the update-control-information identifier stored on the first memory, and executing, when a second instruction requesting a second drawing process of the electronic paper using the processed update-data and the update-control-information identifier is instructed, the second drawing process reusing the processed update-data and the update-control-information identifier stored on the first memory, wherein
the processor executes a process for converting another update-data for which update-request for updating the electronic paper has not been issued into another processed update-data to be displayed,
the processor executes a process for selecting another update-control-information identifier to be used for updating the electronic paper with the another processed update-data created from the another update-data, and
the another update-data is data to be displayed on a screen of the electronic paper in response to an operation by a user, and is data that is able to be chosen by the user.

2. The device according to claim 1 , wherein
the processor stores an update-data ID for specifying the update-data on the first memory while letting the update-data ID corresponding to the processed update-data created by the converting, and stores an update-method being information for selecting update-control information used for updating the electronic paper with the processed update-data on the first memory while letting the update-method corresponding to the update-control-information identifier selected by the selecting.

3. The device according to claim 1 , further comprising
a power controller that, when the processor does not execute the first or second drawing process, switches power supplied to the first memory from a first power to be supplied while the processor is executing the first or second drawing process to a second power being smaller than the first power.

4. The device according to claim 3 , wherein
the first memory is a non-volatile memory, and
the power controller, when the processor does not execute the first or second drawing process, determines power at a time when power supply to the first memory is stopped as the second power.

5. The device according to claim 1 , wherein
the update-data is stored on a second memory different from the first memory.

6. The device according to claim 1 , wherein
when the processor executes the first or second drawing process, the processor executes the process for selecting the another update-control-information identifier to be used for updating the electronic paper with the another processed update-data created from the another update-data while the processor executes the process for converting the another update-data into the another processed update-data to be displayed.

7. The device according to claim 6 , wherein
the update-data and the another update-data have an order relation in which an order of the update-data is pervious than that of the another update-data.

8. The device according to claim 1 , wherein
the first memory stores locking information for permitting or forbidding erasure of the processed update-data and the update-control-information identifier from the first memory while letting the locking information corresponding to the processed update-data and the update-control-information identifier, and
the processor selects the processed update-data and the update-control-information identifier to be erasing from the first memory based on the locking information.

9. The device according to claim 8 , wherein
the update-request for instructing to use the processed update-data and the update-control-information identifier for which erasure is forbidden by the locking information stored on the first memory requests to execute a drawing process of the electronic paper using the processed update-data and the update-control-information identifier stored on the first memory without operating the processor.

10. The device according to claim 1 , wherein
the processor, when update-target regions are overlapping with each other and the same update-data and update-methods are used for update-processes of the update-target regions, executes an update-process with respect to a difference from a previously-executed update-process.

11. A data processing device comprising a processor and/or memory field for:
converting update-data for updating at least a part of an electronic paper into processed update-data to be displayed;
selecting an update-control-information identifier to be used for updating the electronic paper with the processed update-data;
storing the processed update-data and a selected update-control-information identifier on a first memory;
instructing a drawing process of the electronic paper using the processed update-data and the update-control-information identifier stored on the first memory; and
executing, when a first instruction requesting a first drawing process of the electronic paper using the processed update-data and the update-control-information identifier is instructed, the first drawing process using the processed update-data and the update-control-information identifier stored on the first memory, and executing, when a second instruction requesting a second drawing process of the electronic paper using the processed update-data and the update-control-information identifier is instructed, the second drawing process reusing the processed update-data and the update-control-information identifier stored on the first memory, wherein
the processor executes a process for converting another update-data for which update-request for updating the electronic paper has not been issued into another processed update-data to be displayed,
the processor executes a process for selecting another update-control-information identifier to be used for updating the electronic paper with the another processed update-data created from the another update-data,
directly before power being supplied to the data processing device is switched from a third power to a fourth power being smaller than the third power, the processor executes the process for selecting the another update-control-information identifier to be used for updating the electronic paper with the another processed update-data created from the another update-data while the processor executes the process for converting the another update-data into the another processed update-data to be displayed,
the another update-data is data of an update-process corresponding to complication of a restore process of the device, and
when the number of the braches included in the update-process corresponding to complication of the restore process is less than a first threshold, directly before the power being supplied to the data processing device is switched from the third power to the fourth power, the processor executes the process

Assignees

• Toshiba Kk

Inventors

• Shirota Yusuke
• Kanai Tatsunori
• Kimura Tetsuro
• Fujisaki Koichi
• Shibata Akihiro
• Toyama Haruhiko
• Segawa Junichi
• Tarui Masaya
• Shirai Satoshi
• Haruki Hiroyoshi
• Yoshimura Shiyo

Classifications

• G06T1/60

  Memory management · CPC title

• G09G2380/14

  Electronic books and readers · CPC title

• G09G5/395

  Arrangements specially adapted for transferring the contents of the bit-mapped memory to the screen (G09G5/399 takes precedence) · CPC title

• G09G2360/121

  using a cache memory · CPC title

• G09G2330/021

  Power management, e.g. power saving · CPC title