Patent ID: 8347128
Filing Date: 2013-01-01
Classification: G11B,H04N

Abstract:
1. A data processing device operable to connect to a first display, and operate in a first power state including a power-off state, a recording standby state, and a power-on state, the data processing device comprising: a receiver operable to receive a control signal from the first display connected to the data processing device; a transmitter operable to transmit a power state inquiring signal to the first display; a driver operable to acquire data including at least one of a video signal and an audio signal, and store the data to a recording medium; a power controller operable to control electric power supplied to the data processing device; and a second display operable to display an operation state of the data processing device, wherein the power controller supplies the electric power to at least the driver in the power-on state and the recording standby state, and stops supplying the electric power to at least the driver in the power-off state, wherein the second display indicates that power is on in the power-on state, and indicates that the power is off in the recording standby state and the power-off state, wherein the power controller switches the first power state from the recording standby state to the power-on state when the receiver receives a signal instructing a start of a recording operation from the first display and the first power state is the recording standby state, wherein the transmitter periodically transmits, when the first power state is the recording standby state, the power state inquiring signal for inquiring a second power state of the first display, and wherein the power controller changes, when the first power state is the recording standby state, the first power state from the recording standby state to the power-off state when the receiver does not receive a power state confirmation signal from the first display within a predetermined time in reply to the power state inquiring signal.