Title:
DATA COMMUNICATION METHOD, DATA TRANSMITTING APPARATUS, DATA RECEIVING APPARATUS, AND DATA TRANSMISSION PROGRAM
Document Type and Number:
Japanese Patent JP3866232
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a data communication method, a data transmitting apparatus, a data receiving apparatus and a data transmission program in which a problem of jitter caused by the combination of a 1bit noise shaping A/D converter and on-off keying due to infrared light does not occur.
SOLUTION: In the data transmitting apparatus, a sound or music analog signal or a signal digitizing the same signal is converted to a non-return-zero (NRZ) digital signal composed of a 1bit data stream by a noise shaping system, a return-zero signal which allocates a High level of pulse width smaller than pulse width of the NRZ signal to "1" of the converted digital signal and allocates a Low level to "0" is transmitted as a radio signal. In the data receiving apparatus, the radio signal is received and a musical sound output means is driven to output a musical sound signal.
Inventors:
Yasuyuki Matsutani
Application Number:
JP2003324742A
Publication Date:
January 10, 2007
Filing Date:
September 17, 2003
Export Citation:
Assignee:
Nippon Telegraph and Telephone Corporation
International Classes:
H03M3/02; H03M5/06; H04B10/11; H04B10/116; H04B10/40; H04B10/50; H04B10/524; H04B10/556; H04B10/60; (IPC1-7): H04B10/00; H03M3/02; H03M5/06; H04B10/04; H04B10/06; H04B10/10; H04B10/105; H04B10/14; H04B10/22; H04B10/26; H04B10/28
Domestic Patent References:
| JP9069815A | ||||
| JP11127115A | ||||
| JP2002152133A | ||||
| JP2151090A | ||||
| JP8037502A | ||||
| JP6222707A | ||||
| JP2177706A | ||||
| JP9284076A |
Attorney, Agent or Firm:
Masatake Shiga
Yasuhiko Murayama
Yasuhiko Murayama