Endoscope image data compressing apparatus

• US 5,209,220 A
• Filed: 08/28/1990
• Issued: 05/11/1993
• Est. Priority Date: 10/05/1989
• Status: Expired due to Term

• Current Assignee: Olympus Optical Company Ltd. (Olympus Corporation)
• Original Assignee: Olympus Optical Company Ltd. (Olympus Corporation)
• Inventors: Nakamura, Kazunari, Tsuruoka, Takao, Hiyama, Keiichi, Konomura, Yutaka, Hattori, Shinichiro, Kanno, Masahide
• Primary Examiner(s): Pellegrino, Stephen C.
• Assistant Examiner(s): NOT, DEFINED
• Application Number:
  US07/574,401
• Time in Patent Office: 987 Days
• Field of Search: 128/6, 128/4, 358/98
• US Class Current: 600/109
• CPC Class Codes: H04N 1/64 Systems for the transmission or the storage of the colour picture signal; Details therefor, e.g. coding or decoding means therefor H04N19/00 takes precedence
• CPC Class Codes: H04N 11/042 Codec means
• CPC Class Codes: H04N 11/044 involving transform coding
• CPC Class Codes: H04N 19/124 Quantisation
• CPC Class Codes: H04N 19/126 Details of normalisation or weighting functions, e.g. normalisation matrices or variable uniform quantisers
• CPC Class Codes: H04N 19/13 Adaptive entropy coding, e.g. adaptive variable length coding [AVLC] or context adaptive binary arithmetic coding [CABAC]
• CPC Class Codes: H04N 19/154 Measured or subjectively estimated visual quality after decoding, e.g. measurement of distortion use of rate-distortion criteria H04N19/147
• CPC Class Codes: H04N 19/17 the unit being an image region, e.g. an object
• CPC Class Codes: H04N 19/593 involving spatial prediction techniques
• CPC Class Codes: H04N 19/60 using transform coding
• CPC Class Codes: H04N 19/80 Details of filtering operations specially adapted for video compression, e.g. for pixel interpolation H04N19/635, H04N19/86 take precedence
• CPC Class Codes: H04N 19/86 involving reduction of coding artifacts, e.g. of blockiness
• CPC Class Codes: H04N 19/91 Entropy coding, e.g. variable length coding [VLC] or arithmetic coding
• CPC Class Codes: H04N 23/555 for picking-up images in sites, inaccessible due to their dimensions or hazardous conditions, e.g. endoscopes or borescopes
• CPC Class Codes: H04N 5/77 between a recording apparatus and a television camera
• CPC Class Codes: H04N 5/782 on tape
• CPC Class Codes: H04N 5/85 on discs or drums
• CPC Class Codes: H04N 9/8045 using predictive coding
• CPC Class Codes: H04N 9/8047 using transform coding
• CPC Class Codes: H04N 9/877 by assembling picture element blocks in an intermediate memory

Abstract

This endoscope image data compressing apparatus comprises a plurality of image compressing apparatus not equivalent to each other for compressing input endoscope image data and outputting the compressed data and a selecting apparatus for selecting the compressed data output from at least one of the image compressing apparatus. The selecting apparatus selects in response to the kind of the endoscope, characteristic of the image, picture quality of the compressed image, recording time intervals and others.

Claims

1. An endoscope image data compressing apparatus comprising:

an image recording and reproducing apparatus;

a plurality of image compressing means, each utilizing a different data compressing algorithm, connected in parallel in said image recording and reproducing apparatus, for outputting compressed data by compressing input endoscope image data;

a selecting means for switchably selecting said compressed data output from at least one of said image compressing means; and

a discriminating means for discriminating a unit kind of an endoscope operatively connected with said compressing means and communicating unit kind discrimination information to said selecting on the basis of the discriminated result of said discriminating means.

2. A compressing apparatus according to claim 1, wherein said selecting means selects and operates at least one of said compressing means.

3. A plurality of compressing means according to claim 1, wherein said compressing means differ in compressing rate.

4. An endoscope system, comprising:

an endoscope comprising an elongate insertable part having a tip part, an emitting means for emitting an illuminating light from s said tip part, an objective optical system for forming an endoscope image provided in said tip part, and an imaging means for photoelectrically converting said endoscope image formed by said objective optical system into an electrical image signal;

a signal processing means for processing said electrical image signal from said imaging means and outputting a video signal;

a displaying means for inputting said video signal output from said signal processing means and displaying said endoscope image;

a compressing apparatus for inputting and compressing said endoscope image which is capable of performing one of a plurality of compressing algorithms, wherein said compressing apparatus includes a plurality of compressing devices each arranged in a parallel selection arrangement and each corresponding to one of said plurality of compressing algorithms, respectively, wherein at least one of said compressing devices compresses data contained in said video signal;

a selecting means for switchably selecting said compressed data output from at least one of said plurality of compressing devices;

a discriminating means for discriminating a unit kind of said endoscope operatively connected with said plurality of compressing devices and communicating unit kind discrimination information to said selecting means, said selecting means selecting on the basis of the discriminated result of said discriminating means; and

a recording apparatus for recording data compressed by said compressing apparatus.