Device and method for multiple display system having storage means for enlarged images

• US 5,454,075 A
• Filed: 09/01/1993
• Issued: 09/26/1995
• Est. Priority Date: 09/01/1992
• Status: Expired due to Term

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Kudo, Yoji
• Primary Examiner(s): Powell, Mark R.
• Assistant Examiner(s): Tung, Kee M.
• Application Number:
  US08/115,044
• Time in Patent Office: 755 Days
• Field of Search: 395/162, 395/164, 395/153, 395/155, 395/157, 345/1.4, 345/201, 364/413.01, 364/413.02
• US Class Current: 345/536
• CPC Class Codes: G06T 1/60 Memory management

Abstract

A multiple display system to facilitate a further convenience and achieve a high-speed operation for use with a patient diagnosing equipment. The system includes a first memory unit for storing a plurality of images; a second memory unit, which stores the images stored in the first memory unit and operates at a higher speed than the first memory unit and is equipped with a greater memory region than that allocated for storing images to be displayed, and which stores the plural images supplied from the first memory units; an input portion for inputting an instruction to smoothly and continuously change the plural images in a substantially simultaneous manner; a display interface portion which selects a plurality of memory regions of the second memory unit, and which reads the plural memory regions; and a display unit for displaying respective plural images read out of the display interface portion.

Claims

1. A multiple display device comprising:

display means for displaying a plurality of images;

an interactive interface for outputting information signals in accordance with instructions of an operator to change or shift at least one of said plurality of images displayed by said display means;

a first memory for storing said plurality of images;

a second memory having a larger capacity and operating at a higher speed than said first memory, for storing enlarged images consisting of images stored in said first memory indicated by said information signals along with portions of said images which encompass the displayed images and are not displayed by said display means; and

a display interface for selecting enlarged images stored in said second memory corresponding to said images indicated by said information signals and outputting the selected enlarged images to said display means for display thereof.

3. A multiple display device according to any of claims 1,2, further comprising a third memory, connected to said second memory and serving as an auxiliary memory thereto in the event that said second memory must store further portions of said images which encompass the displayed images and are not displayed by said display means, beyond said capacity of said second memory.

4. A multiple display device according to claim 3, wherein said plurality of images are arranged sequentially and read cyclically from said first memory.

2. A multiple display device comprising:

display means for displaying a plurality of images;

an interactive interface for outputting information signals in accordance with instructions of an operator to change or shift at least one of said plurality of images displayed by said display means;

display control means for receiving said information signals and generating control signals to control said display means;

image administrating means for generating selection signals representing images selected by said operator to be changed or shifted;

a first memory for storing said plurality of images;

a second memory having a larger capacity and operating at a higher speed than said first memory, for storing enlarged images consisting of images stored in said first memory indicated by said selection signals along with portions of said images which encompass the displayed images and are not displayed by said display means; and

a display interface for selecting the enlarged images stored in said second memory corresponding to said images indicated by said selection signals and outputting the selected enlarged images to said display means for display thereof.

5. A method for changing or shifting at least one of a plurality of displayed images, comprising the steps of:

(a) storing said plurality of displayed images in a first memory;

(b) receiving instructions of an operator to change or shift at least one of said plurality of displayed images;

(c) generating selection signals in accordance with at least one of said displayed images selected by said operator to be changed or shifted;

(d) storing enlarged images consisting of images stored in first memory indicated by said selection signals along with portions of said images which encompass the displayed images and are not displayed, in a second memory having a larger capacity and operating at a higher speed than said first memory; and

(e) selecting the enlarged images stored in said second memory corresponding to images indicated by said selection signals and outputting the selected enlarged images to be displayed.

6. A method according to claim 5, further comprising the step of:

(d-1) storing further portions of said images which encompass the displayed images and are not displayed in a third memory when a capacity of said second memory is exceeded.