Stereoscopic image display apparatus using a single projector

• US 6,522,351 B1
• Filed: 12/02/1996
• Issued: 02/18/2003
• Est. Priority Date: 12/29/1995
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Park, Joon-Soo
• Primary Examiner(s): Le, Vu
• Application Number:
  US08/753,883
• Time in Patent Office: 2,269 Days
• Field of Search: 348/42, 348/47, 348/51, 348/54-56, 349/15, 352/57, 353/7, 355/22, 345/6
• US Class Current: 348/51
• CPC Class Codes: H04N 13/139 Format conversion, e.g. of frame-rate or size
• 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 13/194 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 13/363 using image projection screens volumetric display H04N13/388

Abstract

A stereoscopic image display apparatus displays a stereoscopic image using only a single projector. The apparatus includes a photography section for sensing a left image and a right image of an object and converting the left and right images into respective first and second television signals. The first and second television signals are received by a receiving section which then provides the signals to a double-scanning section. The double-scanning section scans the left and right image signals received from the receiving section at a doubled horizontal scan frequency to produce a left double-scanned image signal and a right double-scanned image signal. A multiplexing section then alternately selects the left and right double-scanned image signals at a switching speed of the doubled horizontal frequency to thereby produce a single, multiplexed double-scanned image signal. A projection type display section projects the multiplexed double-scanned image signal onto a single display screen.

Claims

1. A stereoscopic image display apparatus comprising:

a receiver receiving first and second television signals and producing left and right image signals therefrom, respectively;

double-scanning means for repeatedly scanning twice each line of said left and right image signals, provided from said receiver, at a doubled horizontal frequency of said image signals to produce left and right double-scanned image signals;

multiplexing means for alternately selecting said left and right double-scanned image signals at a switching speed of said doubled horizontal frequency and producing a single multiplexed double-scanned image signal; and

display means for projecting said multiplexed double-scanned image signal onto a single display screen.

2. A stereoscopic image display apparatus comprising:

double-scanning means for repeatedly scanning twice each line of left and right image signals, provided from first and second cameras, at a doubled horizontal frequency of said image signals to produce left and right double-scanned image signals;

multiplexing means for alternately selecting said left and right double-scanned image signals at a switching speed of said doubled horizontal frequency, and producing a single multiplexed double-scanned image signal;

transmitting means for transmitting said multiplexed double-scanned image signal as a television signal;

receiving means for receiving said television signal and providing a demodulated multiplexed double-scanned image signal; and

a display means for projecting said demodulated multiplexed double-scanned image signal onto a single display screen.

3. A stereoscopic image display apparatus comprising:

double-scanning means for repeatedly scanning twice each line of an input left and right image signals at a doubled horizontal frequency of said image signals to produce left and right double-scanned image signals;

multiplexing means for alternately selecting said left and right double-scanned image signals at a switching speed of said double horizontal frequency and producing a single multiplexed doubled-scanned image signal; and

display means for projecting said multiplexed double-scanned image signal onto a single display screen.