Patent ID: 7751686
Filing Date: 2010-07-06
Classification: G11B,H04N

Abstract:
1. A data recording apparatus comprising: an inputting device for receiving a bit stream consisting of a packet signal string configured by data of a fixed length; a data converting device for converting the data which is received by said inputting device, into a recording signal; a recording device for recording the recording signal which is converted by said data converting device, on a predetermined recording medium; a data rate detecting device for detecting a data rate of the received bit stream by counting a number of packets received by said inputting device at intervals of a predetermined time period, the predetermined time period being a time period taken by said recording device to record data on said predetermined recording medium in a predetermined format; and a controlling device for controlling a recording rate of said recording device based on the detected data rate, wherein said controlling device compares a predetermined reference value with the data rate which is detected by said data rate detecting device, to control the recording rate of said recording device, and wherein there are at least two kinds of recording modes in which said recording device records the recording signal, and at intervals of a predetermined time period, until a rate of a data corresponding to the recording signal which is to be recorded by said recording device exceeds the predetermined reference value, said controlling device controls the recording rate of said recording device so that the recording signal is recorded in a recording mode corresponding to a rate which does not exceed the predetermined reference value, and, after the rate of the data corresponding to the recording signal which is to be recorded by said recording device exceeds the predetermined reference value, controls the recording rate of said recording device so that the recording signal is recorded in a recording mode corresponding to a higher rate which exceeds the predetermined reference value.