US5673154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Digital transmission signal processing system and recording/reproducing system
Assignee: Hitachi Consumer Electronics Co Ltd
•
Filing: 1996-03-22
•
Granted: 1997-09-30
•
Expires: 2016-03-22
Abstract
Abstract A receiving apparatus for receiving a transmitted bit-compressed signal and a transmitted control signal which controls a performance of a recording apparatus. The transmitted bit-compressed signal and the transmitted control signal are transmitted after adding of a parity signal thereto and effecting modulation thereof. The receiving apparatus includes a reception unit for receiving the transmitted bit-compressed signal and the transmitted control signal, a demodulator for demodulating the bit-compressed signal and the control signal outputted by the reception unit in a manner corresponding to the modulation thereof. An error correcting unit receives the demodulated bit-compressed signal and the demodulated control signal for correcting errors therein in accordance with the parity signal added thereto and for at least outputting an error-correcting bit-compressed signal and an error-corrected control signal. A control circuit is provided for detecting the error-corrected control signal from the error correction unit and for controlling performance of the recording apparatus in response to the detected error-corrected control signal. Furthermore, a bit expansion unit is provided for receiving the error-corrected bit-compressed signal and for bit-expanding the error-corrected bit-compressed signal corresponding to the bit-compression thereof.
Inventors
- 👤 Hideo Arai
- 👤 Hitoaki Owashi
- 👤 Kyoichi Hosokawa
- 👤 Keizo Nishimura
- 👤 Yoshizumi Watatani
- 👤 Akira Shibata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:30
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/91; H04N5/92; H04N5/926; G; G11; G11B; G11B15/00; G11B15/18; G11B15/1808; G11B15/1875; G11B20/00; G11B20/00007; G11B20/10; G11B20/10527; G11B27/00; G11B27/02; G11B27/031; G11B27/032; G11B27/10; G11B5/00; G11B5/008; G11B5/00813; G11B5/00817; G11B5/00839; G11B5/00847; G11B5/0086; G11B5/02; G11B5/09; H04N5/765; H04N5/775; G11B15/46; G11B15/467; G11B15/4671; G11B15/4673; G11B2220/00; G11B2220/90; G11B27/005; H04N5/78; H04N5/782; H04N5/783; H04N9/00; H04N9/79; H04N9/7921; H04N9/797; H04N9/7973; H04N9/80; H04N9/804; H04N9/8042
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
159 words
A receiving apparatus for receiving a transmitted bit-compressed signal and a transmitted control signal which controls a performance of a recording apparatus, the transmitted bit-compressed signal and the transmitted control signal being transmitted after adding of a parity signal thereto and effecting modulation thereof, comprising: reception means for receiving the transmitted bit-compressed signal and the transmitted control signal; demodulation means for demodulating the bit-compressed signal and the control signal from said reception means corresponding to the modulation thereof and outputting a demodulated bit-compressed signal and a demodulated control signal; error correction means for correcting errors in the demodulated bit-compressed signal and the demodulated control signal from said demodulation means based upon the parity signal added thereto and for outputting an error-corrected bit-compressed signal and an error-corrected control signal; and control detection means for detecting the error-corrected control signal from said error correction means and for controlling performance of the recording apparatus in response to the detected error-corrected control signal.
Claim 2
Dependent Claim
159 words
A receiving apparatus for receiving a transmitted bit-compressed signal and a transmitted control signal which controls a performance of a recording apparatus, the transmitted bit-compressed signal and the transmitted control signal being transmitted after adding of a parity signal thereto and effecting modulation thereof, comprising: reception means for receiving the transmitted bit-compressed signal and the transmitted control signal; demodulation means for demodulating the bit-compressed signal and the control signal from said reception means corresponding to the modulation thereof and outputting a demodulated bit-compressed signal and a demodulated control signal; error correction means for correcting errors in the demodulated bit-compressed signal and the demodulated control signal from said demodulation means based upon the parity signal added thereto and for outputting an error-corrected bit-compressed signal and an error-corrected control signal; and control detection means for detecting the error-corrected control signal from said error correction means and for controlling performance of the recording apparatus in response to the detected error-corrected control signal.
Claim 3
Dependent Claim
172 words
A receiving apparatus for receiving a transmitted bit-compressed signal and a transmitted control signal for controlling a performance of a recording/reproducing apparatus for recording/reproducing the bit compressed signal, the transmitted bit-compressed signal and the transmitted control signal being transmitted after adding of a parity signal thereto and effecting modulation thereof, comprising: reception means for receiving the transmitted bit-compressed signal and the transmitted control signal; demodulation means for demodulating the bit-compressed signal and the control signal from said reception means corresponding to the modulation thereof and for outputting a demodulated bit-compressed signal and a demodulated control signal; error correction means for correcting errors in the demodulated bit-compressed signal and the demodulated control signal from said demodulation means based upon the parity signal added thereto and for outputting an error-corrected bit-compressed signal to said recording/reproducing apparatus and for outputting an error-corrected control signal; and control detection means for detecting the error-corrected control signal from said error correction means and for controlling performance in said recording/reproducing apparatus in response to the detected error-corrected control signal.
Claim 4
Dependent Claim
172 words
A receiving apparatus for receiving a transmitted bit-compressed signal and a transmitted control signal for controlling a performance of a recording/reproducing apparatus for recording/reproducing the bit compressed signal, the transmitted bit-compressed signal and the transmitted control signal being transmitted after adding of a parity signal thereto and effecting modulation thereof, comprising: reception means for receiving the transmitted bit-compressed signal and the transmitted control signal; demodulation means for demodulating the bit-compressed signal and the control signal from said reception means corresponding to the modulation thereof and for outputting a demodulated bit-compressed signal and a demodulated control signal; error correction means for correcting errors in the demodulated bit-compressed signal and the demodulated control signal from said demodulation means based upon the parity signal added thereto and for outputting an error-corrected bit-compressed signal to said recording/reproducing apparatus and for outputting an error-corrected control signal; and control detection means for detecting the error-corrected control signal from said error correction means and for controlling performance in said recording/reproducing apparatus in response to the detected error-corrected control signal.
Claim 5
Dependent Claim
125 words
A receiving apparatus for receiving a transmitted bit-compressed signal being bit-compressed through discrete cosine transform and being transmitted in electric wave form after adding of a parity signal to the bit-compressed signal and effecting QPSK modulation thereof, comprising: reception means for receiving the transmitted bit-compressed signal in electric wave form; QPSK demodulation means for demodulating the bit-compressed signal from said reception means corresponding to the QPSK modulation thereof and outputting a demodulated bit-compressed signal; error correction means for correcting errors in the demodulated bit-compressed signal from said QPSK demodulation means based upon the parity signal added thereto and outputting an error-corrected bit-compressed signal; and bit-expansion means for bit-expanding the error-corrected bit-Compressed signal from said error correction means corresponding to the bit-compression through discrete cosine transform.
Claim 6
Dependent Claim
125 words
A receiving apparatus for receiving a transmitted bit-compressed signal being bit-compressed through discrete cosine transform and being transmitted in electric wave form after adding of a parity signal to the bit-compressed signal and effecting QPSK modulation thereof, comprising: reception means for receiving the transmitted bit-compressed signal in electric wave form; QPSK demodulation means for demodulating the bit-compressed signal from said reception means corresponding to the QPSK modulation thereof and outputting a demodulated bit-compressed signal; error correction means for correcting errors in the demodulated bit-compressed signal from said QPSK demodulation means based upon the parity signal added thereto and outputting an error-corrected bit-compressed signal; and bit-expansion means for bit-expanding the error-corrected bit-Compressed signal from said error correction means corresponding to the bit-compression through discrete cosine transform.
Claim 7
Dependent Claim
35 words
A receiving apparatus according to claim 1, further comprising bit expansion means for receiving the error-corrected bit-compressed signal from said error correction means and for bit-expanding the error-corrected bit-compressed signal corresponding to the bit-compression thereof.
Claim 8
Dependent Claim
90 words
A receiving apparatus according to claim 2, further comprising selecting means coupled to the recording reproducing apparatus and to the error correction means for selecting one of the error-corrected bit-compressed signal from the error correction means and a reproduced signal from the recording/reproducing apparatus and for providing an output of the selected signal, and bit expansion means coupled to the selecting means for receiving the error-corrected bit-compressed signal when output by the selecting means and for bit-expanding the error-corrected bit-compressed signal from the selecting means corresponding to the bit-compression thereof.
Claim 9
Dependent Claim
189 words
A receiving apparatus for receiving a transmitted bit-compressed video signal-being bit-compressed through discrete cosine transform and a transmitted bit-compressed audio signal and being transmitted after adding a parity signal to the bit-compressed video signal and the bit-compressed audio signal and effecting QPSK modulation thereof, comprising: reception means for receiving the transmitted bit-compressed video signal and the transmitted bit-compressed audio signal; QPSK demodulation means for demodulating the bit-compressed video signal and the bit-compressed audio signal from said reception means corresponding to the QPSK modulation thereof and outputting a demodulated bit-compressed video signal and a demodulated bit compressed audio signal; error correction means for correcting errors in the demodulated bit-compressed video signal and the demodulated bit-compressed audio signal from said QPSK demodulation means based upon the parity signal added thereto and for outputting an error corrected bit-compressed video signal and an error corrected bit-compressed audio signal; and bit-expansion means for bit-expanding the error-corrected bit-compressed video signal from said error correction means corresponding to the video bit-compression thereof through discrete cosine transform and for bit-expanding an error corrected bit-compressed audio signal from said error correction means corresponding to the audio bit-compression thereof.
Claim 10
Dependent Claim
189 words
A receiving apparatus for receiving a transmitted bit-compressed video signal-being bit-compressed through discrete cosine transform and a transmitted bit-compressed audio signal and being transmitted after adding a parity signal to the bit-compressed video signal and the bit-compressed audio signal and effecting QPSK modulation thereof, comprising: reception means for receiving the transmitted bit-compressed video signal and the transmitted bit-compressed audio signal; QPSK demodulation means for demodulating the bit-compressed video signal and the bit-compressed audio signal from said reception means corresponding to the QPSK modulation thereof and outputting a demodulated bit-compressed video signal and a demodulated bit compressed audio signal; error correction means for correcting errors in the demodulated bit-compressed video signal and the demodulated bit-compressed audio signal from said QPSK demodulation means based upon the parity signal added thereto and for outputting an error corrected bit-compressed video signal and an error corrected bit-compressed audio signal; and bit-expansion means for bit-expanding the error-corrected bit-compressed video signal from said error correction means corresponding to the video bit-compression thereof through discrete cosine transform and for bit-expanding an error corrected bit-compressed audio signal from said error correction means corresponding to the audio bit-compression thereof.
References Cited (Backward Citations)
US4542417A
Cited
US4544958A
Cited
US5065259A
Cited
US4975771A
Cited
US5377050A
Cited
US5355116A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-09-29 | 2001-03-31 | 2001-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-09-29 | 2005-03-31 | 2005-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-09-29 | 2009-03-31 | 2009-09-30 | $7700.00 | Window Closed / Lapsed |