ICSP for PIC microcontroller using USB

[at89atbits]

Hi,
I am a bit confused as to how the ICSP circuit functions.
Like I read on a few websites where the working of the 6 pins and its connections are explained.
But I want to program the PIC finally from the USB port of my laptop
and i am using ICSP so that I don't need to remove the micro controller out of the circuit for loading the program
But I am confused how the ICSP is supposed to be inferfaced with the USB pins.

 

[KrisBlueNZ]

Using a device programmer such as the Microchip PICkit 2 or PICkit 3. There are third party replacements but people seem to have trouble with them. Actually, the PICkit 3 isn't exactly reliable either!

 

[at89atbits]

No but is there no way to build a circuit around the microcontroller IC such that if we provide a USB port on the circuit, it can directly be programmed?

 

[KrisBlueNZ]

You could duplicate the PICkit hardware on each board you make (including copying their firmware)... Or you could design your own programming interface using a micro with a USB interface (and write your own driver and/or application for the PC end)... otherwise I don't think so!