Remotely powered quench control sensing transmitter

Claim 2

A light sensing transmitter for use with a photographic camera and a remotely located photographic flash device, said transmitter comprising; a first pair of terminals arranged for connection to camera shutter contacts which contacts, when closed, complete a path between said first pair of terminals; a second pair of terminals arranged for connection to the remotely located flash device; means connected between said first and second pairs of terminals for applying a first signal to said second pair of terminals, for transmission thereby to the flash device for causing the latter to produce light for illuminating an object to be photographed by the camera upon the completion of a path between said first pair of terminals; and a normally disabled light responsive integrating means arranged to receive light from the object, said integrating means being connected to said second pair of terminals to receive an enabling signal therefrom which is produced by the firing of the flash device, said integrating means, when enabled and having received a predetermined quantity of light, providing at said second pair of terminals a second signal for terminating the production of light by said flash device.

Claim 3

A photographic apparatus for use with a remotely located photographic flash device, said apparatus comprising; camera shutter contacts, a first pair of terminals arranged for connection to said camera shutter contacts which, when closed, complete a path between said first pair of terminals, a second pair of terminals arranged for connection to said remotely located flash device, means connected between said first and second pairs of Terminals for applying a first signal to said second pair of terminals for transmission thereby to the flash device for causing the latter to produce light for illuminating an object to be photographed by the camera upon the completion of a path between said first pair of terminals, a normally disabled light responsive integrating means arranged to receive light from the object, said integrating means being connected to said second pair of terminals to receive an enabling signal therefrom which is produced by the firing of the flash device, said integrating means, when enabled and having received a predetermined quantity of light, providing at said second pair of terminals a second signal for terminating the production of light by said flash device.

Claim 4

A photographic apparatus for use with a remotely located photographic flash device, said apparatus comprising; camera shutter contacts, a first pair of terminals arranged for connection to said camera shutter contacts which, when closed, complete a path between said first pair of terminals, a second pair of terminals arranged for connection to said remotely located flash device, means connected between said first and second pairs of Terminals for applying a first signal to said second pair of terminals for transmission thereby to the flash device for causing the latter to produce light for illuminating an object to be photographed by the camera upon the completion of a path between said first pair of terminals, a normally disabled light responsive integrating means arranged to receive light from the object, said integrating means being connected to said second pair of terminals to receive an enabling signal therefrom which is produced by the firing of the flash device, said integrating means, when enabled and having received a predetermined quantity of light, providing at said second pair of terminals a second signal for terminating the production of light by said flash device.

Claim 5

A light sensing transmitter for use with a photographic camera and a remotely located photographic flash device, said transmitter comprising; first terminal means, including a first pair of terminals arranged for connection to camera shutter contacts, which contacts, when closed, complete a path between said first pair of terminals, second terminal means arranged for connection to the remotely located flash device, first means connected between said first and second terminal means for applying a first signal to said second terminal means for transmission thereby to the flash device for causing the latter to produce light, upon the completion of a path between said first pair of terminals, light sensing means arranged to receive light which is influenced by the light produced by the flash device, and to provide a light integral signal of a magnitude representative of the quantity of light received by said sensing means, and second means connected between said sensing means and said second terminal means for applying a second control signal to said second terminal means for transmission thereby to the flash device for terminating the production of light when the magnitude of said light integral signal reaches a predetermined value, all energizing power for said sensing means being transmitted through said second terminal means.

Claim 6

A light sensing transmitter for use with a photographic camera and a remotely located photographic flash device, said transmitter comprising; first terminal means, including a first pair of terminals arranged for connection to camera shutter contacts, which contacts, when closed, complete a path between said first pair of terminals, second terminal means arranged for connection to the remotely located flash device, first means connected between said first and second terminal means for applying a first signal to said second terminal means for transmission thereby to the flash device for causing the latter to produce light, upon the completion of a path between said first pair of terminals, light sensing means arranged to receive light which is influenced by the light produced by the flash device, and to provide a light integral signal of a magnitude representative of the quantity of light received by said sensing means, and second means connected between said sensing means and said second terminal means for applying a second control signal to said second terminal means for transmission thereby to the flash device for terminating the production of light when the magnitude of said light integral signal reaches a predetermined value, all energizing power for said sensing means being transmitted through said second terminal means.

Claim 7

A sensing means for use with a photographic camera, comprising; first terminal means arranged for connection to shutter contacts of a camera, second terminal means arranged for connection to a flash device, circuit means interconnecting said first and second terminal means for causing the closure of said contacts to produce an electrical effect at said second terminal means for firing the flash device, thereby causing the flash device to produce light for illuminating an object to be photographed by the camera, and a normally disabled light responsive integrating means arranged to receive light from the object, said integrating means being connected to said second terminal means to receive an enabling signal therefrom which is produced by the firing of the flash device, said integrating means, when enabled and having received a predetermined quantity of light, providing at said second terminal means a second signal for terminating the production of light by said flash device.

Claim 8

A sensing means for use with a photographic camera, comprising; first terminal means arranged for connection to shutter contacts of a camera, second terminal means arranged for connection to a flash device, circuit means interconnecting said first and second terminal means for causing the closure of said contacts to produce an electrical effect at said second terminal means for firing the flash device, thereby causing the flash device to produce light for illuminating an object to be photographed by the camera, and a normally disabled light responsive integrating means arranged to receive light from the object, said integrating means being connected to said second terminal means to receive an enabling signal therefrom which is produced by the firing of the flash device, said integrating means, when enabled and having received a predetermined quantity of light, providing at said second terminal means a second signal for terminating the production of light by said flash device.

Claim 9

A sensing means for use with a photographic camera, comprising; first terminal means arranged for connection to shutter contacts of a camera, second terminal means arranged for connection by respective conductors to a flash device, said conductors constituting the only electrical connection between said flash device and said sensing means, circuit means interconnecting said first and second terminal means for causing the closure of said contacts to produce an electrical effect at said second terminal means for firing said flash device, thereby causing said flash device to produce light for illuminating an object to be photographed by the camera, isolating means connected in said circuit means and responsive to a first signal, received at said second terminal means over said conductors upon the firing of said flash device, to prevent said contacts from produCing said effect at said second terminal means during the continuance of said first signal, and a light responsive integrating means arranged to receive light from the object, and connected to said second terminal means for providing thereat a second signal for terminating the production of light by the flash device when said integrating means has received a predetermined quantity of light.

Claim 10

A sensing means for use with a photographic camera, comprising; first terminal means arranged for connection to shutter contacts of a camera, second terminal means arranged for connection by respective conductors to a flash device, said conductors constituting the only electrical connection between said flash device and said sensing means, circuit means interconnecting said first and second terminal means for causing the closure of said contacts to produce an electrical effect at said second terminal means for firing said flash device, thereby causing said flash device to produce light for illuminating an object to be photographed by the camera, isolating means connected in said circuit means and responsive to a first signal, received at said second terminal means over said conductors upon the firing of said flash device, to prevent said contacts from produCing said effect at said second terminal means during the continuance of said first signal, and a light responsive integrating means arranged to receive light from the object, and connected to said second terminal means for providing thereat a second signal for terminating the production of light by the flash device when said integrating means has received a predetermined quantity of light.

Claim 11

A sensing means for use with a photographic camera comprising; first terminal means arranged for connection to shutter contacts of a camera; second terminal means arranged for connection to a flash device; circuit means interconnecting said first and second terminal means for causing the closure of said contacts to produce an electrical effect at said second terminal means for firing the flash device, thereby causing the flash device to produce light for illuminating an object to be photographed by the camera; and light sensing means arranged to receive light from the object, said light sensing means being connected to said second terminal means to receive an enable signal therefrom which is produced by the firing of the flash device, said light sensing means being operative in response to said enable signal to monitor light affected by the firing of the flash device and, upon an occurrence of a predetermined value of said affected light, to produce a second signal at said second terminal means for terminating the production of light by the flash device.

Claim 12

A sensing means for use with a photographic camera comprising; first terminal means arranged for connection to shutter contacts of a camera; second terminal means arranged for connection to a flash device; circuit means interconnecting said first and second terminal means for causing the closure of said contacts to produce an electrical effect at said second terminal means for firing the flash device, thereby causing the flash device to produce light for illuminating an object to be photographed by the camera; and light sensing means arranged to receive light from the object, said light sensing means being connected to said second terminal means to receive an enable signal therefrom which is produced by the firing of the flash device, said light sensing means being operative in response to said enable signal to monitor light affected by the firing of the flash device and, upon an occurrence of a predetermined value of said affected light, to produce a second signal at said second terminal means for terminating the production of light by the flash device.

Claim 13

A light sensing apparatus for use with a photographic flash unit, which unit includes a selectively firable flash device and supply conductors for providing therebetween a supply voltage for powering the flash device, the supply voltage exhibiting a significant change upon each firing of the flash device, said light sensing apparatus comprising integrating light sensing means arranged to receive light from a scene to be illuminated by the flash device, and gating means connected to said light sensing means and arranged to be coupled to the supply conductors of the flash unit, said gating means controlling the supply of energizing power to said light sensing means and being operative to supply energizing power to said light sensing means only upon the occurrence of the aforementioned significant change in the supply voltage between the supply conductors of the flash unit, said light sensing means being operative, only after receiving said energizing power, to generate a terminate signal for application to the flash unit for effectively terminating the illumination provided by the flash device when the integral of the light received by said light sensing means exceeds a threshold value.

Claim 14

A light sensing apparatus for use with a photographic flash unit, which unit includes a selectively firable flash device and supply conductors for providing therebetween a supply voltage for powering the flash device, the supply voltage exhibiting a significant change upon each firing of the flash device, said light sensing apparatus comprising integrating light sensing means arranged to receive light from a scene to be illuminated by the flash device, and gating means connected to said light sensing means and arranged to be coupled to the supply conductors of the flash unit, said gating means controlling the supply of energizing power to said light sensing means and being operative to supply energizing power to said light sensing means only upon the occurrence of the aforementioned significant change in the supply voltage between the supply conductors of the flash unit, said light sensing means being operative, only after receiving said energizing power, to generate a terminate signal for application to the flash unit for effectively terminating the illumination provided by the flash device when the integral of the light received by said light sensing means exceeds a threshold value.

Claim 15

Control apparatus comprising: a light producing means including supply conductors for providing a supply voltage; means for selectively actuating said light producing means to provide illumination for a scene to be photographed, said operation of said light producing means thereby effecting a significant decrease in the supply voltage across said supply conductors; integrating light sensing means arranged to receive light from said scene; and gating means coupled to said supply conductors and connected to said sensing means, said gating means being operative for supplying energizing power to said sensing means only in response to said decrease in supply voltage, said sensing means being operative only after receiving said energizing power to generate a terminate signal for effectively terminating the operation of said light producing means when the integral light received by said light sensing means exceeds a threshold value.

Claim 16

Control apparatus comprising: a light producing means including supply conductors for providing a supply voltage; means for selectively actuating said light producing means to provide illumination for a scene to be photographed, said operation of said light producing means thereby effecting a significant decrease in the supply voltage across said supply conductors; integrating light sensing means arranged to receive light from said scene; and gating means coupled to said supply conductors and connected to said sensing means, said gating means being operative for supplying energizing power to said sensing means only in response to said decrease in supply voltage, said sensing means being operative only after receiving said energizing power to generate a terminate signal for effectively terminating the operation of said light producing means when the integral light received by said light sensing means exceeds a threshold value.