Remotely controlled light sensing apparatus

Claim 2

A sensing transmitter for use with a remotely located control apparatus, said sensing transmitter comprising: a first pair of terminals and a second pair of terminals, said first pair of terminals providing a connection to means for providing a first control signal, said second pair of terminals providing a connection to said remotely located control apparatus, all energizing power for said sensing transmitter being applied to said second pair of terminals from said remotely located control apparatus, said sensing transmitter further including means for transmitting said first control signal, through said second pair of terminals, to said remotely located control apparatus to effect a first control function thereat, sensing means for monitoring an effect produced as a result of said control function and providing a sensor signal in variable accordance therewith, and means responsive to said sensor signal for providing a second control signal whenever said sensor signal reaches a predetermined value, said second control signal also being applied to said second pair of terminals for transmission to said remotely located control apparatus to effect a second control function thereat.

Claim 3

A sensing transmitter for use with a remotely located control apparatus, said sensing transmitter comprising: a first pair of terminals and a second pair of terminals, said first pair of terminals providing a connection to means for providing a first control signal, said second pair of terminals providing a connection to said remotely located control apparatus, all energizing power for said sensing transmitter being applied to said second pair of terminals from said remotely located control apparatus, said sensing transmitter further including means for transmitting said first control signal, through said second pair of terminals, to said remotely located control apparatus to effect a first control function thereat, sensing means for monitoring an effect produced as a result of said control function and providing a sensor signal in variable accordance therewith, and means responsive to said sensor signal for providing a second control signal whenever said sensor signal reaches a predetermined value, said second control signal also being applied to said second pair of terminals for transmission to said remotely located control apparatus to effect a second control function thereat.

Claim 4

A sensing transmitter for use with a remotely located control apparatus, said sensing transmitter comprising: a first pair of terminals and a second pair of terminals, said first pair of terminals providing a connection to means for providing a first control signal, said second pair of terminals providing a connection to said remotely located control apparatus, all energizing power for said sensing transmitter being applied to said second pair of terminals from said remotely located control apparatus, said sensing transmitter further including means for transmitting said first control signal, through said second pair of terminals, to said remotely located control apparatus to effect a first control function thereat, sensing means for monitoring an effect produced as a result of said control function and providing a sensor signal in variable accordance therewith, and means responsive to said sensor signal for providing a second control signal whenever said sensor signal reaches a predetermined value, said second control signal also being applied to said second pair of terminals for transmission to said remotely located control apparatus to effect a second control function thereat.

Claim 5

A sensing transmitter as set forth in claim 1 and further characterized by the inclusion of gating means therein which normally maintains said sensing means in an inoperative condition, said gating means being responsive to a signal applied to said second pair of terminals indicative of the occurrence of said first control function for rendering said sensing means operative.

Claim 6

The invention as set forth in claim 2, wherein said means responsive to said sensor signal further includes means for providing a time-varying threshold signal whereby said second control signal is provided whenever said sensor signal and said threshold signal attain a predetermined relationship.

Claim 7

The invention as set forth in claim 3 wherein said gating means is a diode having an anode terminal and a cathode terminal, said diode anode terminal being connected to a first terminal of said first pair; and Wherein said sensing means and said means responsive to said sensor signal comprise a Light Activated Silicon Controlled Rectifier (LASCR) having anode, cathode and gate terminals, said sensing means being a light responsive junction of said LASCR, said anode terminal of said LASCR being connected to said diode cathode terminal; said signal transmitter further including an integrating capacitor and an anticipation resistor connected in series between said LASCR gate terminal and a second terminal of said second pair; and said means for providing a time-varying threshold signal including: a capacitor connected between said LASCR cathode terminal and said second terminal of said first pair; and a voltage divider connecting said diode cathode terminal with said second terminal of said first pair, said voltage divider having a pick-off terminal thereon connected to said LASCR cathode terminal.

Claim 8

A sensing transmitter as set forth in claim 2 and further characterized by the inclusion of isolating means responsive to said last mentioned signal for effectively isolating said sensing transmitter from said means for producing said first control signal during the continuance of said signal applied to said second pair of terminals indicative of the occurrence of said first control function.

Claim 9

The invention as set forth in claim 5 wherein said isolating means is a diode having an anode terminal coupled to a second terminal of said first pair, and a cathode terminal coupled to said second terminal of said first pair.

Claim 10

The invention as set forth in claim 1 wherein said means for transmitting said first control signal includes: a first transistor having base, collector, and emitter terminals said collector and emitter terminals being connected respectively to a first terminal of said second pair and a first terminal of said first pair; a resistor connecting said base terminal with said collector terminal; a first and second terminals diode having anode and cathode terminals, said cathode terminal being connected to said base terminal and said anode terminal being connected to a second terminal of said second pair; a first voltage divider means connecting a second terminal of said first pair with said second terminal of said second pair, said first voltage divider means having a pick-off terminal thereon; a second transistor having base collector and emitter terminals, said collector and emitter terminals of said second transistor being connected respectively between said first and second terminals of said second pair; a second diode having an anode terminal connected to said base terminal of said first transistor and a cathode terminal connected to said collector terminal of said first transistor; a first capacitor means connecting said emitter and base terminals of said first transistor; a second capacitor means connected between said pick-off terminal and said base terminal of said second transistor; and a third capacitor means connected between said pick-off terminal and said second terminal of said second pair.

Claim 11

The invention as set forth in claim 7 wherein said sensing means and said means responsive to said sensor signal comprise: a light activated silicon controlled rectifier (LASCR) having anode cathode and gate terminals, said sensing means being a light responsive junction of said LASCR, said anode terminal of said LASCR being connected to said pick-off terminal; a first charge storage means connected between said first terminal of said first pair and said second terminal of said second pair; a second voltage divider means connected across said first charge storage means, said second voltage divider having a pick-off terminal connected to said cathode terminal of said LASCR; a second charge storage means connected between said cathode terminal of said LASCR and said second terminal of said second pair; an integration means connected between said gate terminal of said LASCR and said second terminal of said second pair, said inTegration means for integrating said sensor signal; and a third transistor having base, collector and emitter terminals, said collector and emitter terminals of said third transistor being connected across said integration means, and said base terminal of said third transistor being connected to said first terminal of said second pair.

Claim 12

The invention as set forth in claim 8 wherein said first and second charge storage means are capacitors, and said integration means includes: a capacitor and a resistor serially connected between said gate terminal of said LASCR and said second terminal of said second pair.

Claim 13

The invention as set forth in claim 1 wherein said means for providing a first control signal includes a shutter switch of a photographic camera.

Claim 14

The combination comprising: means for providing a first control signal; first pair of terminals and second pair of terminals, said first pair of terminals providing a connection means to said means for providing said first control signal, said second pair of terminals providing a connection means to a remotely located control apparatus, all energizing power for said sensing transmitter being applied to said second pair of terminals from said remotely located control apparatus, means for transmitting said first control signal through said second pair of terminals to said remotely located control apparatus to effect a first control function thereat; sensing means for monitoring an effect produced as a result of said control function and providing a sensor signal in variable accordance therewith; and means responsive to said sensor signal for providing a second control signal whenever said sensor signal reaches a predetermined value, said second control signal also being applied to said second pair of terminals for transmission to said remotely located control apparatus to effect a second control function thereat.

Claim 15

The combination comprising: means for providing a first control signal; first pair of terminals and second pair of terminals, said first pair of terminals providing a connection means to said means for providing said first control signal, said second pair of terminals providing a connection means to a remotely located control apparatus, all energizing power for said sensing transmitter being applied to said second pair of terminals from said remotely located control apparatus, means for transmitting said first control signal through said second pair of terminals to said remotely located control apparatus to effect a first control function thereat; sensing means for monitoring an effect produced as a result of said control function and providing a sensor signal in variable accordance therewith; and means responsive to said sensor signal for providing a second control signal whenever said sensor signal reaches a predetermined value, said second control signal also being applied to said second pair of terminals for transmission to said remotely located control apparatus to effect a second control function thereat.

Claim 16

The invention as set forth in claim 11 wherein said means for providing said first control signal includes a shutter switch of a photographic camera.

Claim 17

The sensing transmitter as set forth in claim 1 wherein said means for transmitting said first control signal includes first and second connection means connecting respective terminals of said first and second pair of terminals.