Video information recording and display

Claim 2

In a method of recording and subsequently displaying video information, the improvement comprising in combination the steps of: providing an apparatus for recording and reproducing video information contained in electric signals; providing a first video display device; providing a second video display device separate from said first video display device; providing a video camera; employing said video camera for generating first electric signals containing video information; employing said first video display device for viewing said video information during generation of said first electric signals; employing said apparatus for recording said video information contained in said first electric signals; employing said apparatus for subsequently reproducing said recorded video information; employing said first video display device for displaying said reproduced video information; employing said video camera for generating second electric signals substantially containing said displayed reproduced video information; and employing said second video display device for displaying said video information contained in said second electric signals.

Claim 3

A method as claimed in claim 1, including in said combination the steps of: providing a first optical path for video information to said video camera preparatory to and during generation of said first electric signals; providing a second optical path for video information from said first video display device to the eye of an observer during generation of said first electric signals; and providing a third optical path from said first video display device to said video camera preparatory to and during reproduction of said recorded video information.

Claim 4

A method as claimed in claim 1, including the steps of: providing said first electric signals with video synchronization information; recording and subsequently reproducing said video synchronization information whereby timing errors are produced in said synchronization information; employing said synchronization information with said timing errors to synchronize said first video display device during the display of said reproduced video information; providing said second electric signals with video synchronization information; providing said second video display device with an automatic frequency control system for averaging timing errors in said synchronization information in said second electric signals; employing said automatic frequency control system for averaging timing errors in said synchronization information in said second electric signals; and employing said synchronization information with said averaged timing errors to synchronize said second video display device during the display of said video information contained in said second electric signals.

Claim 5

A method as claimed in claim 1, wherein: said first scanning rate is a first horizontal scanning rate; and said second scanning rate is a second horizontal scanning rate being higher than said first horizontal scanning rate.

Claim 6

A method as claimed in claim 1, wherein: said video camera is operated at a first scanning rate during generation of said first electric signals; said first video display device is operated at said first scanning rate during display of said reproduced video information; said video Camera is operated at a second scanning rate, being higher than said first scanning rate, during generation of said second electric signals; and said second video display device is operated at said second scanning rate during display of said video information contained in said second electric signals.

Claim 7

A method as claimed in claim 5, wherein: said first scanning rate is a first vertical scanning rate in fields per second; and said second scanning rate is a second vertical scanning rate in fields per second, being higher than said first vertical scanning rate.

Claim 8

A method as claimed in claim 1, wherein: said video camera is operated at a first horizontal scanning rate and at a first vertical scanning rate during generation of said first electric signals; said first video display device is operated at said first horizontal scanning rate and at said first vertical scanning rate during display of said reproduced video information; said video camera is operated at a second horizontal scanning rate and at said first vertical scanning rate during generation of said second electric signals, said second horizontal scanning rate being higher than said first horizontal scanning rate; and said second video display device is operated at said second horizontal scanning rate and at said first vertical scanning rate during display of said video information contained in said second electric signals.

Claim 9

A method as claimed in claim 7, wherein: said first scanning rate is made substantially equal to two-thirds of said second scanning rate.

Claim 10

In a method of recording and subsequently displaying video information, the improvement comprising in the combination the steps of: providing an apparatus for recording and reproducing video information contained in electric signals; providing a first video display device; providing a second video display device separate from said first video display device; providing a video camera; employing said video camera for generating first electric signals containing video information and operating said video camera at a first scanning rate during generation of said first electric signals; employing said apparatus for recording said video information contained in said first electric signals; employing said apparatus for subsequently reproducing said recorded video information; employing said first video display device for displaying said reproduced video information and operating said first video display device at said first scanning rate during display of said reproduced video information; employing said video camera for generating second electric signals substantially containing said displayed reproduced video information and operating said video camera at a second scanning rate, being higher than said first scanning rate, during generation of said second electric signals; and employing said second video display device for displaying said video information contained in said second electric signals and operating said second video display device at said second scanning rate during display of said video information contained in said second electric signals.

Claim 11

In a method of recording and subsequently displaying video information, the improvement comprising in the combination the steps of: providing an apparatus for recording and reproducing video information contained in electric signals; providing a first video display device; providing a second video display device separate from said first video display device; providing a video camera; employing said video camera for generating first electric signals containing video information and operating said video camera at a first scanning rate during generation of said first electric signals; employing said apparatus for recording said video information contained in said first electric signals; employing said apparatus for subsequently reproducing said recorded video information; employing said first video display device for displaying said reproduced video information and operating said first video display device at said first scanning rate during display of said reproduced video information; employing said video camera for generating second electric signals substantially containing said displayed reproduced video information and operating said video camera at a second scanning rate, being higher than said first scanning rate, during generation of said second electric signals; and employing said second video display device for displaying said video information contained in said second electric signals and operating said second video display device at said second scanning rate during display of said video information contained in said second electric signals.

Claim 12

A method as claimed in claim 9, wherein: said first scanning rate is a first vertical scanning rate in fields per second; and said second scanning rate is a second vertical scanning rate in fields per second, being higher than said first vertical scanning rate.

Claim 13

A method as claimed in claim 9, wherein: said first scanning rate is a first horizontal scanning rate; and said second scanning rate is a second horizontal scanning rate being higher than said first horizontal scanning rate.

Claim 14

A method as claimed in claim 9, wherein: said video camera is operated at a first horizontal scanning rate and at a first vertical scanning rate during generation of said first electric signals; said first video display device is operated at said first horizontal scanning raTe and at said first vertical scanning rate during display of said reproduced video information; said video camera is operated as a second horizontal scanning rate and at said first vertical scanning rate during generation of said second electric signals, said second horizontal scanning rate being higher than said first horizontal scanning rate; and said second video display device is operated at said second horizontal scanning rate and at said first vertical scanning rate during display of said video information contained in said second electric signals.

Claim 15

A method as claimed in claim 12, wherein: said first scanning rate is made substantially equal to two-thirds of said second scanning rate.

Claim 16

In apparatus for recording video information and subsequently displaying said video information with a video display apparatus, the improvement comprising in combination: means for recording and reproducing video information contained in electric signals; a video display device separate from said video display apparatus; a video camera for generating first electric signals containing video information; means for selectively connecting said video display device to said video camera for a display of said video information during generation of said first electric signals; means for selectively connecting said recording means to said camera for a recording of said video information contained in said first electric signals; means for switching said recording means to a reproducing mode of operation for reproducing said recorded video information; means for selectively connecting said video display device to said recording means for a display of said reproduced video information by said video display device; means for optically coupling said video camera to said video display device for generating second electric signals substantially containing said displayed reproduced video information; and means for applying said second electric signal to said video display apparatus for a display of said video information contained in said second electric signals.

Claim 17

In apparatus for recording video information and subsequently displaying said video information with a video display apparatus, the improvement comprising in combination: means for recording and reproducing video information contained in electric signals; a video display device separate from said video display apparatus; a video camera for generating first electric signals containing video information; means for selectively connecting said video display device to said video camera for a display of said video information during generation of said first electric signals; means for selectively connecting said recording means to said camera for a recording of said video information contained in said first electric signals; means for switching said recording means to a reproducing mode of operation for reproducing said recorded video information; means for selectively connecting said video display device to said recording means for a display of said reproduced video information by said video display device; means for optically coupling said video camera to said video display device for generating second electric signals substantially containing said displayed reproduced video information; and means for applying said second electric signal to said video display apparatus for a display of said video information contained in said second electric signals.

Claim 18

Apparatus as claimed in claim 14, including in said combination: means providing a first optical path for video information to said video camera; and means for providing a second optical path for video information from said first video display device to the eye of an observer during generation of said first electric signals; said optical coupling means including means for selectively providing a third optical path from said first video display device to said video camera.

Claim 19

Apparatus as claimed in claim 14, including in said combination: means for providing said first electric signals with video synchronization information; means for applying said video synchronization information to said recording means for recording and subsequently reproducing said video synchronization information whereby timing errors are produced in said synchronization information; means for synchronizing said video display device during the display of said reproduced video information with said synchronization information including said timing errors; and means for providing said second electric signals with video synchronization information; said video display apparatus having an automatic frequency control system for averaging timing errors in said synchronization information in said second electric signals.

Claim 20

Apparatus as claimed in claim 14, wherein: said first scanning rate is a first horizontal scanning rate; and said second scanning rate is a second horizontal scanning rate being higher than said first horizontal scanning rate.

Claim 21

Apparatus as claimed in claim 14, including in said combination: means for operating said video camera at a first scanning rate during generation of said first electric signals; means for operating said video display device at said first scanning rate during display of said reprOduced video information; and means for operating said video camera at a second scanning rate, being higher than said first scanning rate, during generation of said second electric signals; said video display apparatus including means for operating said video display apparatus at said second scanning rate during display of said video information contained in said second electric signals.

Claim 22

Apparatus as claimed in claim 18, wherein: said first scanning rate is a first vertical scanning rate in fields per second; and said second scanning rate is a second vertical scanning rate in fields per second, being higher than said first vertical scanning rate.

Claim 23

A method as claimed in claim 14, including in said combination: means for operating said video camera at a first horizontal scanning rate and at a first vertical scanning rate during generation of said first electric signals; means for operating said video display device at said first horizontal scanning rate and at said first vertical scanning rate during display of said reproduced video information; and means for operating said video camera at a second horizontal scanning rate and at said first vertical scanning rate during generation of said second electric signals, said second horizontal scanning rate being higher than said first horizontal scanning rate; said video display apparatus including means for operating said video display apparatus at said second horizontal scanning rate and at said first vertical scanning rate during display of said video information contained in said second electric signals.

Claim 24

A method as claimed in claim 20, wherein: said means for operating said video camera during generation of said first electric signals include means for operating said video camera at a first horizontal scanning rate being substantially equal to two-thirds of said second scanning rate, and for operating said video camera at said first vertical scanning rate; and said means for operating said video display device include means for operating said video display device at a first horizontal scanning rate being substantially equal to two-thirds of said second scanning rate, and for operating said video camera at said first vertical scanning rate.

Claim 25

In apparatus for recording and subsequently displaying video information, the improvement comprising in combination: means for recording and reproducing video information contained in electric signals; a video camera for generating first electric signals containing video information; means for operating said video camera at a first scanning rate during generation of said first electric signals; a first video display device for displaying reproduced video information; means for operating said first video display device at said first scanning rate during display of said reproduced video information; means for optically coupling said video camera to said first video display device for a generation of electric signals substantially containing said displayed reproduced video information; means for operating said optically coupled video camera at a second scanning rate, being higher than said first scanning rate, during generation of said second electric signals; a second video display device for displaying said video information contained in said second electric signals; and means for operating said second video display device at said second scanning rate during display of said video information contained in said second electric signals.

Claim 26

In apparatus for recording and subsequently displaying video information, the improvement comprising in combination: means for recording and reproducing video information contained in electric signals; a video camera for generating first electric signals containing video information; means for operating said video camera at a first scanning rate during generation of said first electric signals; a first video display device for displaying reproduced video information; means for operating said first video display device at said first scanning rate during display of said reproduced video information; means for optically coupling said video camera to said first video display device for a generation of electric signals substantially containing said displayed reproduced video information; means for operating said optically coupled video camera at a second scanning rate, being higher than said first scanning rate, during generation of said second electric signals; a second video display device for displaying said video information contained in said second electric signals; and means for operating said second video display device at said second scanning rate during display of said video information contained in said second electric signals.

Claim 27

Apparatus as claimed in claim 22, wherein: said means for operating said video camera at said first scanning rate include means for operating said video camera at a first vertical scanning rate in fields per second during generation of said first electrical signals; said means for operating said first video display device at said first vertical scanning rate in fields per second during display of said reproduced vIdeo information; said means for operating said optically coupled video camera at said second scanning rate include means for operating said optically coupled video camera at a second vertical scanning rate in fields per second, being higher than said first vertical scanning rate; and said means for operating said second video display device at said second scanning rate include means for operating said second video display device at said second vertical scanning rate.

Claim 28

Apparatus as claimed in claim 22, wherein: said means for operating said video camera at said first scanning rate include means for operating said video camera at a first horizontal scanning rate during generation of said first electric signals; said means for operating said first video display device at said first scanning rate include means for operating said first video display device at said first horizontal scanning rate in fields per second during display of said reproduced video information; said means for operating said optically coupled video camera at said second scanning rate include means for operating said optically coupled video camera at a second horizontal scanning rate being higher than said first horizontal scanning rate; and said means for operating said second video display device at said second scanning rate include means for operating said second video display device at said second horizontal scanning rate.

Claim 29

Apparatus as claimed in claim 22, wherein: said means for operating said video camera during generation of said first electric signal include means for operating said video camera at said first horizontal scanning rate and at a first vertical scanning rate during generation of said first electric signals; said means for operating said first video display device include means for operating said first video display device at said first horizontal scanning rate and at said first vertical scanning rate during display of said reproduced video information; said means for operating said video camera during generation of said second electric signals include means for operating said video camera at a second horizontal scanning rate and at said first vertical scanning rate during generation of said second electric signals, said second horizontal scanning rate being higher than said first horizontal scanning rate; and said means for operating said second video display device include means for operating said second video display device a said second horizontal scanning rate and at said first vertical scanning rate during display of said video information contained in said second electric signals.

Claim 30

Apparatus as claimed in claim 25, wherein: said means for operating said video camera at said first horizontal scanning rate include means for operating said video camera during generation of said first electric signal at a horizontal scanning rate being substantially equal to two-thirds of said second horizontal scanning rate; and said means for operating said first video display device at a first horizontal scanning rate include means for operating said first video display device at said horizontal scanning rate substantially equal to two-thirds of said second horizontal scanning rate.