Information recording apparatus with memory control structure

• US 7,702,212 B2
• Filed: 03/28/2005
• Issued: 04/20/2010
• Est. Priority Date: 10/08/1998
• Status: Expired due to Fees

• Current Assignee: Pioneer Corporation
• Original Assignee: Pioneer Corporation
• Inventors: Shimizu, Yuji, Horiuchi, Takahiro, Irisawa, Takashi, Kawano, Eisaku
• Primary Examiner(s): Harvey; David E
• Application Number:
  US11/090,169
• Publication Number:
  US 20050163489A1
• Time in Patent Office: 1,849 Days
• Field of Search: 386/92, 386/108, 386/95, 386/109, 386/112, 386124-126, 386/46, 3483851-3871
• US Class Current: 386/328
• CPC Class Codes: H04N 19/124 Quantisation
• CPC Class Codes: H04N 19/152 by measuring the fullness of the transmission buffer
• CPC Class Codes: H04N 19/176 the region being a block, e.g. a macroblock
• CPC Class Codes: H04N 19/61 in combination with predictive coding
• CPC Class Codes: H04N 5/85 on discs or drums
• CPC Class Codes: H04N 9/7921 for more than one processing mode
• CPC Class Codes: H04N 9/8042 involving data reduction
• CPC Class Codes: H04N 9/8227 the additional signal being at least another television signal

Abstract

An information recording apparatus includes: a transferring device that separately and simultaneously receives at least two information supplied through at least two channels, and separately and simultaneously transfers the at least two information to a storing device at separate transfer rates, thereby storing the at least two information into the storing device; a recording device that alternately reads the at least two information from the storing device, and alternately records the at least two information read from the storing device onto a recording medium at a constant recording rate; and a transfer rate setting device that sets the respective transfer rates to make a total of the transfer rates smaller than the recording rate.

Claims

1. An information recording apparatus comprising:

a first encoding device which receives first information supplied through a first channel, encodes the first information, and transfers the encoded first information at a first transfer rate;

a second encoding device which receives second information supplied through a second channel, encodes the second information, and transfers the encoded second information at a second transfer rate, the second information being different from the first information;

a memory device which receives and memorizes the transferred first information and the transferred second information and outputs the memorized first information and the memorized second information to a recording device;

the recording device which alternately receives the first information and the second information from the memory device, and alternately records the first information and the second information onto a recording medium at a recording rate; and

a controlling device which controls the memory device such that the first information and the second information are memorized at different timing, and are output at different timing and at a outputting rate being corresponded to the recording rate,

wherein the first encoding device and the second encoding device change the first transfer rate and the second transfer rate independently, and a sum of the first transfer rate and the second transfer rate is smaller than the recording rate,

wherein the controlling device controls the memory device such that the increase and decrease of the volume of the memorized first information in the memory device and the increase and decrease of the volume of the memorized second information in the memory device are repeated respectively and alternately,

wherein the controlling device further controls the memory device such that the decrease of the volume of the memorized second information in the memory is started at the same timing as the timing of the increase of the volume of the memorized first information in the memory is started, and that the decrease of the volume of the memorized first information in the memory is started at the same timing as the timing of the increase of the volume of the memorized second information in the memory is started, and

wherein the controlling device further controls the memory device such that the outputting rate is faster than both the first transfer rate and the second transfer rate.

2. The information recording apparatus according to claim 1,

wherein the first encoding device and the second encoding device compress the first information and the second information respectively according to the MPEG (Moving Picture Experts Group) system.