Method and apparatus for storing high and low resolution images in an imaging device

• US 6,122,411 A
• Filed: 02/16/1994
• Issued: 09/19/2000
• Est. Priority Date: 02/16/1994
• Status: Expired due to Term

• Current Assignee: Apple Inc.
• Original Assignee: Apple Computer Incorporated (Apple Inc.)
• Inventors: Holzhauser, Lisa D., Ropa, Amanda, Shen, David W.
• Primary Examiner(s): Johns, Andrew W.
• Application Number:
  US08/195,676
• Time in Patent Office: 2,407 Days
• Field of Search: 382/47, 382/58, 382/61, 382/65, 382/69, 382/299, 382/305, 382/312, 382/317, 382/321, 382/325, 358/404, 358/444, 358/451
• US Class Current: 382/299
• CPC Class Codes: G06T 1/60 Memory management
• CPC Class Codes: H04N 1/00408 Display of information to the user, e.g. menus
• CPC Class Codes: H04N 1/00477 Indicating status, e.g. of a job for control or supervision between transmitter and receiver or between image input and image output device H04N2201/3219
• CPC Class Codes: H04N 1/0048 Indicating an illegal or impossible operation or selection to the user
• CPC Class Codes: H04N 1/2112 using still video cameras
• CPC Class Codes: H04N 1/32358 using picture signal storage, e.g. at transmitter H04N1/17 takes precedence
• CPC Class Codes: H04N 1/32448 Controlling data flow to or from the memory in relation to the available memory capacity
• CPC Class Codes: H04N 1/32454 Controlling data flow to or from the memory in relation to the amount of data, e.g. file size
• CPC Class Codes: H04N 2101/00 Still video cameras
• CPC Class Codes: H04N 2201/0084 Digital still camera
• CPC Class Codes: H04N 2201/214 Checking or indicating the storage space
• CPC Class Codes: H04N 2201/3288 Storage of two or more complete document pages or image frames
• CPC Class Codes: H04N 2201/3298 Checking or indicating the storage space
• CPC Class Codes: H04N 5/772 the recording apparatus and the television camera being placed in the same enclosure
• CPC Class Codes: H04N 5/907 using static stores, e.g. storage tubes or semiconductor memories H04N5/91 takes precedence
• CPC Class Codes: H04N 9/7921 for more than one processing mode

Abstract

A method and apparatus for automatically switching the resolution of an image stored in a memory when the memory can no longer store another image with the present resolution. A processor first determines the amount of available memory in the memory for storing image data. The resolution is then automatically switched from a high resolution to a low resolution when available memory is above a first predetermined level and below a second predetermined level.

Claims

1. An imaging apparatus for storing an image, said apparatus having a plurality of resolution settings including at least a high resolution setting and a low resolution setting, comprising:

resolution selecting means for selecting a resolution setting from the plurality of resolution settings;

an integrating opto-electronic imaging device for producing a set of image signals for each image according to the resolution settings;

means for storing the image signals, wherein a high resolution image takes up more space than a low resolution image;

means for determining the available memory in said storing means;

means for automatically changing the resolution setting from high to low when the available memory in the storing means is above a first predetermined level and below a second predetermined level, and

display means for displaying at least the selected resolution setting and the number of images that can be further stored in said storing means for the selected resolution setting.

2. An imaging apparatus for storing an image according to claim 1, wherein said resolution setting is not automatically changed when there is insufficient available memory.

3. An imaging apparatus for storing an image according to claim 1, wherein both high resolution images and low resolution images are stored together in the storing means.

4. An imaging apparatus for storing an image according to claim 1, wherein said first predetermined level is equal to the amount of memory needed to store a single low resolution image and said second predetermined level is equal to the amount of memory needed to store a single high resolution image.

5. An imaging apparatus for storing an image according to claim 1, wherein an image can not be stored when the available memory is below said first predetermined level.

6. A method for handling different resolution images in an electronic imaging device having a plurality of resolution settings, comprising the steps of:

determining available memory in a memory means;

automatically switching the resolution of the imaging device from a high resolution to a low resolution when available memory is above a first predetermined level and below a second predetermined level;

forming an image with the selected resolution setting;

storing said image in said memory means; and

displaying at least the selected resolution setting and the number of images that can be further stored in said memory means for the selected resolution setting.

7. A method according to claim 6, wherein said resolution setting is not automatically changed when there is no available memory.

8. A method according to claim 6, wherein both high resolution images and low resolution images are stored together in the memory means.

9. A method according to claim 6, wherein said first predetermined level is equal to the amount of memory needed to store a single low resolution image and said second predetermined level is equal to the amount of memory needed to store a single high resolution image.

10. A method according to claim 6, wherein an image can not be stored when the available memory is below said first predetermined level.