×

Digital pixel imager with dual bloom storage capacitors and cascode transistors

  • US 10,462,394 B1
  • Filed: 07/11/2018
  • Issued: 10/29/2019
  • Est. Priority Date: 07/11/2018
  • Status: Active Grant
First Claim
Patent Images

1. An integration capacitor network for connection to a photo-current source, the network comprising:

  • an input;

    a first path connected between the input and a reset voltage, the first path including a first integration capacitor and a first cascode transistor, the first cascode transistor coupled between the input and the first integration capacitor; and

    a second path connected between the input and the reset voltage, the second path including a second integration capacitor and a second cascode transistor, the second cascode transistor coupled between the input and the second integration capacitor;

    wherein gates of the first and second cascode transistors are connected to a reference voltage; and

    wherein charge is accumulated on the first integration capacitor until a voltage on the first integration capacitor exceeds the reference voltage and then charge is accumulated on the second integration capacitor.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×