Motorola co-CEO Sanjay Jha at a Barclays conference today discussed the possibility of a tablet but quickly set boundaries around what he would do. He and his company believe a 7- to 10-inch tablet would work as a companion device around the home, such as for watching TV, but are hesitant about doing a device with a full operating system, like the iPad. Jha said he wasn't "comfortable" with Android on a larger screen than a phone's.