29. One Shot Pulse

How do you plan to solve it?

module rise_pulse(
  input  wire clk,
  input  wire rst,      // synchronous active-high reset
  input  wire sig_in,
  output reg  pulse
);
  reg prev;             // previous sampled value of sig_in

  always @(posedge clk) begin
    if ( rst == 1'b1 ) begin
      prev <= 1'b0;
      pulse <= 1'b0;
    end else begin
      prev <= sig_in;
      pulse <= (~prev & sig_in);
    end
  end
endmodule