Emission controller for electronic flash associated with an electronic camera
First Claim
1. An emission controller for an electronic flash associated with an electronic camera which includes both a solid pickup element having individual photoelectric transducer elements which define picture elements of the solid state pickup element, and means for normally repeatedly scanning the transducer element in a predetermined timing sequence;
- said emission controller comprising;
(a) means for disabling the scanning means and initializing the individual photoelectric transducer elements by placing each of said transducer elements at a common charge level, prior to the emission of flash light from said electronic flash;
(b) means for resetting the transducer elements in substantially simultaneous synchronized relationship with the emission of flash light from the electronic flash so as to permit the charge level of each individual transducer element to change as function of the amount of light from the electronic flash impinging on that transducer element; and
(c) means for enabling the scanning means so as to initiate a sequential scanning of the transducer element at a given time delay after the emission of flash light from the electronic flash.
1 Assignment
0 Petitions
Accused Products
Abstract
An emission controller for an electronic flash associated with an electronic camera including a solid state pickup element is provided. In response to the closure of a flash photography mode switch which conditions an electronic flash for emission of flashlight, all photodiodes of the solid state pickup element which define the picture elements are uniformly initialized. Subsequently, in response to the closure of an emission initiate switch which initiates the emission of flashlight from an electronic flash, the photodiodes are reset or freed from the initialized condition, and the solid state pickup element begins to be scanned to thereby read out the picture elements at a given time delay after the emission of flashlight from the electronic flash.
-
Citations
16 Claims
-
1. An emission controller for an electronic flash associated with an electronic camera which includes both a solid pickup element having individual photoelectric transducer elements which define picture elements of the solid state pickup element, and means for normally repeatedly scanning the transducer element in a predetermined timing sequence;
- said emission controller comprising;
(a) means for disabling the scanning means and initializing the individual photoelectric transducer elements by placing each of said transducer elements at a common charge level, prior to the emission of flash light from said electronic flash; (b) means for resetting the transducer elements in substantially simultaneous synchronized relationship with the emission of flash light from the electronic flash so as to permit the charge level of each individual transducer element to change as function of the amount of light from the electronic flash impinging on that transducer element; and (c) means for enabling the scanning means so as to initiate a sequential scanning of the transducer element at a given time delay after the emission of flash light from the electronic flash. - View Dependent Claims (2, 3, 4, 5, 6, 12, 13, 14, 15, 16)
- said emission controller comprising;
-
7. An emission controller for an electronic flash associated with an electronic camera which includes a solid state pickup element;
- said emission controller comprising;
means for initializing individual photoelectric transducer elements which define picture elements of the solid state state pickup element, prior to the emission of flash light from an electronic flash;
said initializing means including a flash photography mode switch;
said solid state pick up element being associated with a scan circuit having control switching elements connected on its output side for scanning said transducer elements of said pickup element, all of said control switching elements being turned on in synchronism with the operation of said mode switch;means for resetting said transducer elements in synchronized relationship with the emission of flash light from said electronic flash; and means for initiating a sequential scanning of said transducer elements at a given time delay after the initiation of emission of flashlight from said electronic flash. - View Dependent Claims (8, 9, 10)
- said emission controller comprising;
-
11. An emission controller for an electronic flash associated with an electronic camera which includes a solid state pickup element, said emission controller comprising:
-
means for initializing individual photoelectric transducer elements which define picture elements of the solid state pickup element, prior to the emission of flashlight from an electronic flash; means for resetting the transducer elements in synchronized relationship with the emission of flashlight from said electronic flash; means for initiating a sequential scanning of said transducer elements at a given time delay after initiation of emission of flashlight from said electronic flash, said means for initiating a sequential scanning including a delay circuit for delaying by a given time interval a signal produced by an emission initiate switch which is contained within said resetting means for initiating the emission of flashlight from an electronic flash, and a drive pulse generator reset by a flash photography mode switch contained within the initializing means and enabled by an output from said delay circuit for driving a scan circuit associated with said solid state pickup element.
-
Specification