Image recording/reproducing apparatus displaying object images and reproduced images

• US 5,914,700 A
• Filed: 04/29/1997
• Issued: 06/22/1999
• Est. Priority Date: 05/24/1996
• Status: Expired due to Term

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Tonosaki, Satoshi
• Primary Examiner(s): Shankar, Vijay
• Application Number:
  US08/848,679
• Time in Patent Office: 784 Days
• Field of Search: 345/63, 345/88, 345/89, 345/102, 345/104, 345/132, 345/133, 345/141, 345/147, 345/148, 345/186, 345/192, 345/509
• US Class Current: 345/102
• CPC Class Codes: G09G 2320/0613 The adjustment depending on the type of the information to be displayed
• CPC Class Codes: G09G 2320/062 Adjustment of illumination source parameters
• CPC Class Codes: G09G 2320/0626 for control of overall brightness
• CPC Class Codes: G09G 2320/064 by time modulation of the brightness of the illumination source
• CPC Class Codes: G09G 2330/021 Power management, e.g. power saving
• CPC Class Codes: G09G 2340/0428 Gradation resolution change
• CPC Class Codes: G09G 3/20 for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
• CPC Class Codes: G09G 3/3406 Control of illumination source illumination devices structurally associated with liquid crystal cells G02F1/1336
• CPC Class Codes: G09G 3/3611 Control of matrices with row and column drivers
• CPC Class Codes: H04N 1/00408 Display of information to the user, e.g. menus
• CPC Class Codes: H04N 1/2369 Selecting a particular reproducing mode from amongst a plurality of modes, e.g. paper saving or normal, or simplex or duplex
• CPC Class Codes: H04N 2101/00 Still video cameras
• CPC Class Codes: H04N 2201/0089 Image display device
• CPC Class Codes: H04N 23/632 for displaying or modifying preview images prior to image capturing, e.g. variety of image resolutions or capturing parameters
• CPC Class Codes: H04N 23/651 for reducing power consumption by affecting camera operations, e.g. sleep mode, hibernation mode or power off of selective parts of the camera

Abstract

An image display apparatus for displaying an image represented by an image signal corresponding to an object and a reproduced image represented by an image signal reproduced from a storage medium includes a display device provided with a first display mode that permits binary image displays at a low-brightness level and at a high-brightness level and a second display mode that permits multi-level image displays at the low-brightness level, the high-brightness level and at an intermediate level. The brightness level in the display device is set to be lower when the display device displays in the first display mode than when the display device displays in the second display mode. Thus, a low power consumption, easy-to-use and long battery life image display apparatus is provided.

Claims

1. An image recording/reproducing apparatus for displaying an image represented by an image signal corresponding to an object and a reproduced image represented by an image signal reproduced from a storage medium, comprising:

display means, provided with a first display mode that permits binary image displays at a low-brightness level and at a high-brightness level and a second display mode that permits multi-level image displays at the low-brightness level display, the high-brightness level display and an intermediate level, for displaying the image represented by the image signal corresponding to the object and the reproduced image represented by the image signal reproduced from the storage medium;

operation mode designating means having operation modes including a recording mode that permits said apparatus to operate to store in the storage medium the image signal corresponding to the object, a reproducing mode that permits said apparatus to operate to reproduce the image signal recorded in the storage medium, and a condition setting mode that permits conditions of operation in said recording mode or said reproducing mode to be set, said operation mode designating means designating one from among said operation modes so that said apparatus operates in the designated operation mode; and

controlling means for controlling said display means such that said display means operates in said second display mode when said recording mode or said reproducing mode has been designated by said operation mode designating means while, when said condition setting mode has been designated by said operation mode designating means, said display means operates in said first display mode.

2. An image recording/reproducing apparatus according to claim 1, wherein said controlling means is arranged to vary the levels of brightness of display performed by said displaying means such that the levels of brightness in said first display mode are lower than the levels of brightness in said second display mode.

3. An image recording/reproducing apparatus according to claim 2, wherein said display means comprises a display section for displaying an image, an illuminating section for illuminating said display section, and an illumination driving section for outputting a driving pulse that drives said illuminating section.

4. An image recording/reproducing apparatus according to claim 3, wherein said control means controls a pulse width of the driving pulse output from said illumination driving section to be shorter when said display section displays in the first mode than when said display section displays in the second mode.

5. An image recording/reproducing apparatus according to claim 2, wherein said display means comprises a liquid crystal display device for displaying an image, a backlight module for illuminating from behind said liquid crystal display device, and a backlight driving module for outputting a driving pulse that drives said backlight module.

6. An image recording/reproducing apparatus according to claim 5, wherein said control means controls a pulse width of the driving pulse output from said backlight driving module to be shorter when said liquid crystal display device displays in the first mode than when the liquid crystal display device displays in the second mode.

7. An image recording/reproducing apparatus for displaying an image represented by an image signal corresponding to an object and a reproduced image represented by an image signal reproduced from a storage medium, comprising:

display means, provided with a first display mode for displaying text and character information and a second display mode for displaying image information, for displaying the image represented by the image signal corresponding to the object and the reproduced image represented by the image signal reproduced from the storage medium;

operation mode designating means having operation modes including a recording mode that permits said apparatus to operate to store in the storage medium the image signal corresponding to the object, a reproducing mode that permits said apparatus to operate to reproduce the image signal recorded in the storage medium, and a condition setting mode that permits conditions of operation in said recording mode or said reproducing mode to be set, said operation mode designating means designating one from among said operation modes so that said apparatus operates in the designated operation mode; and

controlling means for controlling said display means such that said display means operates in said second display mode when said recording mode or said reproducing mode has been designated by said operation mode designating means while, when said condition setting mode has been designated by said operation mode designating means, said display means operates in said first display mode.

8. An image recording/reproducing apparatus according to claim 7, wherein said controlling means is arranged to vary the levels of brightness of display performed by said displaying means such that the levels of brightness in said first display mode are lower than the levels of brightness in said second display mode.

9. An image recording/reproducing apparatus according to claim 8, wherein said display means comprises a display section for displaying an image, an illuminating section for illuminating said display section, and an illumination driving section for outputting a driving pulse that drives said illuminating section.

10. An image recording/reproducing apparatus according to claim 9, wherein said control means controls a pulse width of the driving pulse output from said illumination driving section to be shorter when said display section displays in the first mode than when the display section displays in the second mode.

11. An image recording/reproducing apparatus according to claim 8, wherein said display means comprises a liquid crystal display device for displaying an image, a backlight module for illuminating from behind said liquid crystal display device, and a backlight driving module for outputting a driving pulse that drives said backlight module.

12. An image recording/reproducing apparatus according to claim 11, wherein said control means controls a pulse width of the driving pulse output from said backlight driving module to be shorter when the liquid crystal display device displays in the first mode than when the liquid crystal display device displays in the second mode.

13. An image recording/reproducing apparatus according to claim 7, wherein said controlling means is arranged to vary a driving frame rate of said displaying means such that the driving frame rate in said first display mode is lower than the driving frame rate in said second display mode.

14. An image recording/reproducing apparatus according to claim 13, wherein the display means comprises a display section for displaying an image, an illuminating section for illuminating the display section, and an illumination driving section for outputting a driving pulse that drives the illuminating section.

15. An image recording/reproducing apparatus according to claim 14, wherein said control means controls a frame rate of the display section to be lower when the display section displays in the first mode than when the display section displays in the second mode.

16. An image recording/reproducing apparatus according to claim 13, wherein said display means comprises a liquid crystal display device for displaying an image, a backlight module for illuminating from behind said liquid crystal display device, and a backlight driving module for outputting a driving pulse that drives said backlight module.

17. An image recording/reproducing apparatus according to claim 16, wherein said control means controls a frame rate of said liquid crystal display device to be lower than when said liquid crystal display device displays in the first mode than when said liquid crystal display device displays in the second mode.

18. An image recording/reproducing apparatus for displaying an image represented by an image signal corresponding to an object and a reproduced image represented by an image signal reproduced from a storage medium, comprising:

display means, provided with a first display mode for displaying a diversity of information when imaging parameters for the object are set and when reproducing parameters for the image signal reproduced from the storage medium are set, and a second display mode for displaying the image of the object and the reproduced image, for displaying the image represented by the image signal corresponding to the object and the reproduced image represented by the image signal reproduced from the storage medium;

operation mode designating means having operation modes including a recording mode that permits said apparatus to operate to store in the storage medium the image signal corresponding to the object, a reproducing mode that permits said apparatus to operate to reproduce the image signal recorded in the storage medium, and a condition setting mode that permits conditions of operation in said recording mode or said reproducing mode to be set, said operation mode designating means designating one from among said operation modes so that said apparatus operates in the designated operation mode; and

controlling means for controlling said display means such that said display means operates in said second display mode when said recording mode or said reproducing mode has been designated by said operation mode designating means while, when said condition setting mode has been designated by said operation mode designating means, said display means operates in said first display mode.

19. An image recording/reproducing apparatus according to claim 18, wherein said controlling means is arranged to vary the levels of brightness of display performed by said displaying means such that the levels of brightness in said first display mode are lower than the levels of brightness in said second display mode.

20. An image recording/reproducing apparatus according to claim 19, wherein said display means comprises a display section for displaying an image, an illuminating section for illuminating said display section, and an illumination driving section for outputting a driving pulse that drives said illuminating section.

21. An image recording/reproducing apparatus according to claim 20, wherein said control means controls a pulse width of the driving pulse output from said illumination driving section to be shorter when the display section displays in the first mode than when the display section displays in the second mode.

22. An image recording/reproducing apparatus according to claim 19, wherein said display means comprises a liquid crystal display device for displaying an image, a backlight module for illuminating from behind said liquid crystal display device, and a backlight driving module for outputting a driving pulse that drives said backlight module.

23. An image recording/reproducing apparatus according to claim 22, wherein said control means controls a pulse width of the driving pulse output from said backlight driving module to be shorter when the liquid crystal display device displays in the first mode than when the liquid crystal display device displays in the second mode.

24. An image recording/reproducing apparatus according to claim 18, wherein said controlling means is arranged to vary a driving frame rate of said displaying means such that the driving frame rate in said first display mode is lower than the driving frame rate in said second display mode.

25. An image recording/reproducing apparatus according to claim 24, wherein said display means comprises a display section for displaying an image, an illuminating section for illuminating said display section, and an illumination driving section for outputting a driving pulse that drives said illuminating section.

26. An image recording/reproducing apparatus according to claim 25, wherein said control means controls a frame rate of the display section to be lower when said display section displays in the first mode than when said display section displays in the second mode.

27. An image recording/reproducing apparatus according to claim 24, wherein said display means comprises a liquid crystal display device for displaying an image, a backlight module for illuminating from behind said liquid crystal display device, and a backlight driving module for outputting a driving pulse that drives said backlight module.

28. An image recording/reproducing apparatus according to claim 27, wherein said control means controls a frame rate of said display section to be lower when the liquid crystal display device displays in the first mode than when the liquid crystal display device displays in the second mode.