Bouncing Pixel, a Houston-based interactive design studio, plans to launch a new startup venture firm, Pixatronic Ventures, with the hope of generating more Web and technology companies in the Houston market. President Jerald Reichstein, his brother Bruce Reichstein and their partner Jackson Lau want to create a test lab for different projects that, if successful, will lead to new tech companies born in Houston. "We're looking at a two-year runway (for Pixatronic Ventures) to take experiments and…