Stereoscopic compression processing with added phase reference

• US 5,627,582 A
• Filed: 11/28/1994
• Issued: 05/06/1997
• Est. Priority Date: 11/29/1993
• Status: Expired due to Fees

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Yamamoto, Masakuni, Muramoto, Tomotaka
• Primary Examiner(s): Chin, Tommy P.
• Assistant Examiner(s): LIN, BRYAN T
• Application Number:
  US08/345,628
• Time in Patent Office: 890 Days
• Field of Search: 348/43, 348/42, 348/46, 348/47, 348/51, 348/55, 348/56, 348/57
• US Class Current: 348/43
• CPC Class Codes: H04N 13/15 for colour aspects of image signals
• CPC Class Codes: H04N 13/161 Encoding, multiplexing or demultiplexing different image signal components for multi-view video sequence encoding H04N19/597
• CPC Class Codes: H04N 13/189 Recording image signals; Reproducing recorded image signals
• CPC Class Codes: H04N 13/194 Transmission of image signals
• CPC Class Codes: H04N 13/239 using two 2D image sensors having a relative position equal to or related to the interocular distance H04N13/243 takes precedence
• CPC Class Codes: H04N 13/257 Colour aspects
• CPC Class Codes: H04N 13/296 Synchronisation thereof; Control thereof
• CPC Class Codes: H04N 13/324 Colour aspects
• CPC Class Codes: H04N 13/337 using polarisation multiplexing
• CPC Class Codes: H04N 13/339 using spatial multiplexing H04N13/337 takes precedence
• CPC Class Codes: H04N 13/341 using temporal multiplexing
• CPC Class Codes: H04N 13/344 with head-mounted left-right displays
• CPC Class Codes: H04N 13/398 Synchronisation thereof; Control thereof
• CPC Class Codes: H04N 19/597 specially adapted for multi-view video sequence encoding
• CPC Class Codes: H04N 5/45 Picture in picture , e.g. displaying simultaneously another television channel in a region of the screen
• CPC Class Codes: H04N 7/0806 the signals being two or more video signals H04N7/0803, H04N7/081 take precedence
• CPC Class Codes: H04N 9/8227 the additional signal being at least another television signal
• CPC Class Codes: H04N 9/87 Regeneration of colour television signals H04N9/80 takes precedence

Abstract

A stereoscopic image processing apparatus for processing a stereoscopic image signal for a stereoscopic image which is composed of a plurality of images is arranged to receive a plurality of image signals for the plurality of images, to time-base-compress the image signals received, to form a composite image signal by combining the time-base-compressed image signals, to multiplex an information signal for information which is other than images but corresponds to the contents of the plurality of images, and to output the composite image signal to a transmission route. The arrangement enables the apparatus to combine the plurality of image signals for the images forming the stereoscopic image and to transmit the composite image signal together with the information signal for information which is other than images but corresponds to the content of the plurality of images.

Claims

1. A stereoscopic image processing apparatus for recording on a recording medium a stereoscopic image signal for a stereoscopic image which is composed of left and right images, comprising:

a) time base compressing means arranged to time-base-compress and output image signals corresponding respectively to the left and right images for every horizontal scanning period;

b) image signal combining means for combining and outputting the image signals which correspond respectively to the left and right images and are time-base-compressed by said time base compressing means by proving a predetermined blanking period within every horizontal scanning period in such a way as to have the image signals located across the blanking period in the direction of the time base;

c) signal adding means for adding to the time-base-compressed and combined image signals both a horizontal synchronizing signal during a horizontal blanking period provided at the front of a portion of the time-base-compressed and combined image signals outputted by said image signal combining means, said portion corresponding to the left image, and a phase reference signal during a blanking period provided at between portions of the time-base-compressed and combined image signals corresponding respectively to the left and right images, said phase reference signal being different from said horizontal synchronizing signal and serving as a phase reference at the time of reproduction and thereby outputting a signal obtained by the above addition; and

d) recording means for recording on the recording medium the signal outputted from said signal adding means.

2. An apparatus according to claim 1, wherein said time base compressing means is arranged to time-base-compress and output an amount for one horizontal scanning period of the image signals for the right and left images during a period which is approximately one half of a period obtained by removing a period of adding the signal to be used as phase reference for reproduction from an image signal portion corresponding to an effective image plane which excludes the horizontal blanking period.

3. An apparatus according to claim 1, wherein said stereoscopic image signal includes a luminance component signal and a chrominance component signal, wherein said signal adding means includes phase synchronizing signal adding means for adding a phase reference signal to the time-base-compressed and combined luminance component signals, said phase reference signal being different from said horizontal synchronizing signal and serving as a phase reference at the time of reproduction, during a blanking period provided at between portions of the time-base-compressed and combined luminance component signals, outputted by said image signal combining means, corresponding respectively to the left and right images and outputting a signal obtained by the above addition and color burst signal adding means for adding a color burst signal serving as a phase reference at the time of reproduction to the time-base-compressed and combined chrominance component signals during a horizontal blanking period provided at the front of a portion of the time-base-compressed and combined chrominance component signals outputted by said image signal combining means, said portion corresponding to the left image, and during a blanking period provided at between portions of the time-base-compressed and combined chrominance component signals corresponding respectively to the left and right images and outputting a signal obtained by the above addition.

4. A stereoscopic image reproducing apparatus for reproducing a stereoscopic image signal from a recording medium on which the stereoscopic image signal for a stereoscopic image which is composed of left and fight images is recorded, comprising:

a) reproducing means for reproducing and outputting the stereoscopic image signal recorded on the recording medium;

b) time base expanding means arranged to separate from the signal outputted from said reproducing means, image signals which correspond respectively to the left and fight images and have been time-base-compressed for every horizontal scanning period, to time-base-expand the image signals corresponding respectively to the left and right images and to output the time-base-expanded images; and

c) control means for extracting both a horizontal synchronizing signal which is added to time-base compressed and combined image signals outputted by said reproducing means, during a horizontal blanking period provided at the front of a portion of said time-based-compressed and combined image signals, said portion corresponding to the left image, and a phase reference signal, said signal being different from said horizontal synchronizing signal and serving as a reference at the time of reproduction, which is added to the time-base compressed and combined image signals, during a blanking period provided at between portions of the time-base-compressed and combined image signals, said portions corresponding respectively to the left and right images, and thereby controlling a time base expanding process of said time base expanding means by means of the horizontal synchronizing signal and phase reference signal thus extracted.

5. An apparatus according to claim 4, wherein said stereoscopic image signal includes a luminance component signal and a chrominance component signal, and wherein said time base expanding means includes luminance component signal time base expanding means arranged to separate, from the signal outputted from said reproducing means, luminance component signals which respectively correspond to the left and right images separated from each other and are in a state of having been time-base-compressed for every scanning period and to time-base-expand and output the luminance component signals corresponding to the left and right images, and chrominance component signal time base expanding means arranged to separate, form the signal outputted from said reproducing means, chrominance component signals which respectively correspond to the left and right images separated and are in a state of having been time-base-compressed for every scanning period and to time-base-expand and output the chrominance component signals for the left and right images.

6. An apparatus according to claim 5, wherein said stereoscopic image signal includes a luminance component signal and a chrominance component signal, wherein said control means is arranged to extract a phase reference signal, said phase reference signal being different from said horizontal synchronizing signal and serving as a phase reference at the time of reproduction, which is added to the time-base-compressed and combined luminance component signals outputted by the reproduction means during a blanking period provided at between portions of the time-base-compressed and combined luminance component signals, said portions corresponding respectively to the left and right images and control a time base expanding process of said luminance component signal time base expanding means by means said phase reference signal thus extracted and wherein said control means is arranged to extract a color burst signal serving as a phase reference at the time of reproduction which is added to the time-base compressed and combined chrominance component signals outputted by said reproducing means, during a horizontal blanking period provided at the front of a portion of the time-base-compressed and combined chrominance component signals, said portion corresponding to the left image and during a blanking period provided at between portions of the time-base-compressed and combined chrominance component signals, said portions corresponding respectively to the left and right images and outputting a signal thus extracted.