Title:
信号埋め込み方法および装置
Document Type and Number:
Japanese Patent JP4689873
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To insert control data into audio data without any influence or with minimum influence with respect to sound data, to transmits or record and store the data in a storage device, and to make restorable the audio signal and control data on a reception side. SOLUTION: This device is equipped with an A/D converter (a) which converts an analog audio signal 1 into digital audio data 2, a data replacement processing part (b) which performs data replacement so that the audio data 2 and control data 5 do not match each other if the audio data 2 and control data 5 match each other when the control data 5 corresponding to a control signal are inserted into the converted audio data 3, and a control data insertion part (c) which replaces the data-replaced audio data 3 with the control data 5 with an external control signal. The restoration is carried out by a control data detection part (g), an audio data generation part (f), a data replacement processing part (d) and a D/A converter (e).
Inventors:
Hamajima Riki
Application Number:
JP2001153875A
Publication Date:
May 25, 2011
Filing Date:
May 23, 2001
Export Citation:
Assignee:
nec Engineering Co., Ltd.
International Classes:
G10L19/00; G11B20/10; G10K15/02; G10L19/018; G10L25/51
Domestic Patent References:
| JP2001036722A | ||||
| JP1091376A | ||||
| JP11088549A | ||||
| JP57138254A | ||||
| JP9214636A | ||||
| JP2003295894A | ||||
| JP3232349A | ||||
| JP11039796A | ||||
| JP2001153875A |
Attorney, Agent or Firm:
Ken Ieiri