Patent ID: 8595388

Claim:
A mobile phone system comprising: a first processing unit; a second processing unit which operates in one of an operating mode and a standby mode as an operation mode thereof, the second processing unit being coupled to the first processing unit, and including a central processing unit, a first interface circuit and a second interface circuit; a display device electrically coupled to the second processing unit; a first signal route which is from the first processing unit to the display device via the first interface unit, the central processing unit and the second interface unit; and a second signal route which is from the first processing unit to the display device via the second interface unit, wherein, in the operating mode, the second processing unit receives data signals from the first processing unit, the central processing unit of the second processing unit conducts processing based on the data signals from the first processing unit, and is operable to provide data signals from the second processing unit to the display device via the first signal route, and wherein, in the standby mode of the second processing unit, the second interface unit and the second signal route are provided a power supply, and data signals from the first processing unit are directly provided to the display device via the second signal route, wherein the data signals from the first processing unit which are received in the standby mode include display control information for the display device, wherein the display device is controlled based on the data signals received from the first processing unit via the second processing unit in the standby mode, and wherein the standby mode is a lower consumption state than the operating mode.