Title:
変調装置および方法、復調装置および方法、並びにデータ格納媒体
Document Type and Number:
Japanese Patent JP3985173
Kind Code:
B2
Abstract:
A DSV control bit determining/inserting unit 11 inserts DSV control bits for execution of DSV control into an input data string and outputs the data string including the DSV control bits to a modulation unit 12. The modulation unit 12 converts the data string with a basic data length of 2 bits into variable length code with a basic code length of 3 bits in accordance with a conversion table and outputs the code resulting from the conversion to a NRZI encoding unit 13. The conversion table used by the modulation unit 12 includes substitution codes for limiting the number of consecutive appearances of a minimum run to a predetermined value and substitution codes for keeping a run length limit. In addition, the conversion table enforces a conversion rule, according to which the remainder of division of the "1" count of an element in a data string by 2 having a value of 0 or 1 shall always be equal to the remainder of division of the "1" count of an element in the code resulting from conversion of the data string by 2.
Inventors:
Toshiyuki Nakagawa
Shinfuku Yoshihide
Tatsuya Narahara
Kosuke Nakamura
Case A. Show Hamel Immink
GJ van den enden
J.A.H.M.Karlman
Shinfuku Yoshihide
Tatsuya Narahara
Kosuke Nakamura
Case A. Show Hamel Immink
GJ van den enden
J.A.H.M.Karlman
Application Number:
JP15028098A
Publication Date:
October 03, 2007
Filing Date:
May 29, 1998
Export Citation:
Assignee:
ソニー株式会社
コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ
コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ
International Classes:
H03M7/14; G06F7/00; G11B5/60; G11B20/14; G11B21/21; H03M5/14; H03M7/00; H03M7/02; H03M7/40; H04L27/00; H04L27/04; G11B; H03M
Domestic Patent References:
| JP7050588A | ||||
| JP11177432A | ||||
| JP11177433A | ||||
| JP11145841A | ||||
| JP11086458A | ||||
| JP5327518A | ||||
| JP9219646A | ||||
| JP9232963A |
Attorney, Agent or Firm:
Yoshio Inamoto