Make LED's flash then fade out?

So here's the deal; I am making a binary clock with a timer ad ripple counters and LED's and stuff, and that is all working, but I want to make it so that every minute, a row of LED's (seven, to be precise) will flash on, then fade out. Every minute, I have a signal which resets the seconds counter to zero, and increments the minutes counter, so I would like to tie into that, through a power transistor or something, to charge some capacitors, which will in turn light the LED's and cause the desired fading effect. however, this signal only lasts for about 1/60 of a second, which is definitely not enough time to charge the capacitors. so what I need is an IC or a simple circuit of some kind which will begin to output power as soon as it receives that signal, and continue to supply power for about a second or so (or however long it takes to charge the capacitors). I anyone knows of an IC or has the diagram of a circuit that will do this for me, it would be a great help.