×

Power on self test (POST) and extended self test (EST) for ultrasonic imaging system

  • US 6,678,626 B2
  • Filed: 07/31/2001
  • Issued: 01/13/2004
  • Est. Priority Date: 07/31/2001
  • Status: Expired due to Fees
First Claim
Patent Images

1. An ultrasonic imaging system comprising:

  • a first on-board memory storing run-time code;

    a second on-board memory having a faster access time than the first on-board memory;

    a first application specific integrated circuit (ASIC) including a beamformer, first and second built-in pseudo-random number (PRN) generators, and a first built-in cyclic redundancy coding checker, and a second application specific integrated circuit (ASIC) including a detector and a second built-in cyclic redundancy coding (CRC) checker; and

    a power on self test (POST) which is initiated, performed and completed within three seconds of power ON, wherein the run-time code is configured to perform the POST and ultrasonic scanning with said ultrasonic imaging system, further wherein the POST includes a verification test for copying the run-time code from the first on-board memory to the second on-board memory enabling access to the run-time code from said faster second on-board memory, the verification test further for verifying that the copied run-time code has been copied correctly, and wherein a receive digital signal path during ultrasonic scanning passes through the beamformer and then the detector, wherein the POST further including a receive digital signal path test in which the first PRN generator and first CRC checker operate with the second PRN generator and second CRC checker to test an output of the beamformer and an output of the detector of the receive digital signal path, respectively, in parallel.

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