Video signal recording and reproducing apparatus

• US 8,285,109 B2
• Filed: 03/14/2007
• Issued: 10/09/2012
• Est. Priority Date: 09/11/1995
• Status: Expired due to Fees

• Current Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Inventors: Sasaki, Seishi, Katou, Yoshikazu
• Primary Examiner(s): CHIO, TAT CHI
• Application Number:
  US11/685,825
• Publication Number:
  US 20070154174A1
• Time in Patent Office: 2,036 Days
• Field of Search: 386/328, 386/326, 386/235, 386/237, 386/343, 386/344, 386/350
• US Class Current: 386/237
• CPC Class Codes: G11B 20/00007 Time or data compression or expansion audio compression based on psychoacoustics G10L19/00; data processing for reproducing audio data at different playback speeds G10L21/04; video compression H04N19/00; data compression per se H03M7/30
• CPC Class Codes: G11B 20/10527 Audio or video recording; Data buffering arrangements G11B20/12 - G11B20/18 take precedence
• CPC Class Codes: G11B 2020/10592 specifically adapted for recording or reproducing multichannel signals
• CPC Class Codes: G11B 2020/10916 Seeking data on the record carrier for preparing an access to a specific address
• CPC Class Codes: G11B 2020/10953 Concurrent recording or playback of different streams or files
• CPC Class Codes: G11B 2020/10962 wherein both recording and playback take place simultaneously
• CPC Class Codes: G11B 2220/2516 Hard disks
• CPC Class Codes: H04N 19/40 using video transcoding, i.e. partial or full decoding of a coded input stream followed by re-encoding of the decoded output stream
• CPC Class Codes: H04N 19/423 characterised by memory arrangements H04N19/433 takes precedence
• CPC Class Codes: H04N 19/428 Recompression, e.g. by spatial or temporal decimation
• CPC Class Codes: H04N 19/587 involving temporal sub-sampling or interpolation, e.g. decimation or subsequent interpolation of pictures in a video sequence
• CPC Class Codes: H04N 19/61 in combination with predictive coding
• CPC Class Codes: H04N 21/4147 PVR [Personal Video Recorder] H04N5/76 takes precedence ; arrangements for broadcast with accumulation-type receivers H04H20/40
• CPC Class Codes: H04N 21/42204 User interfaces specially adapted for controlling a client device through a remote control device; Remote control devices therefor constructive details of casings for the remote control device H01H9/0235; user interfaces for controlling a tuning device of a television receiver through a remote control H03J9/00; remote control of peripheral devices connected to a television receiver through the remote control device of the television receiver H04B1/205
• CPC Class Codes: H04N 21/426 Internal components of the client ; Characteristics thereof H04N5/44 takes precedence
• CPC Class Codes: H04N 21/4316 for displaying supplemental content in a region of the screen, e.g. an advertisement in a separate window
• CPC Class Codes: H04N 21/4334 Recording operations recording of a television signal H04N5/76; arrangements for recording or accumulating broadcast information or broadcast-related information H04H60/27
• CPC Class Codes: H04N 21/440281 by altering the temporal resolution, e.g. by frame skipping television signal recording using magnetic recording on tape for reproducing at a rate different from the recording rate H04N5/783
• CPC Class Codes: H04N 21/47 End-user applications
• CPC Class Codes: H04N 5/45 Picture in picture , e.g. displaying simultaneously another television channel in a region of the screen
• CPC Class Codes: H04N 5/76 : Television signal recording
• CPC Class Codes: H04N 5/775 : between a recording apparatus and a television receiver
• CPC Class Codes: H04N 5/781 : on disks or drums
• CPC Class Codes: H04N 5/782 : on tape
• CPC Class Codes: H04N 5/783 : Adaptations for reproducing at a rate different from the recording rate
• CPC Class Codes: H04N 5/85 : on discs or drums
• CPC Class Codes: H04N 9/8042 : involving data reduction
• CPC Class Codes: H04N 9/8063 : using time division multiplex of the PCM audio and PCM video signals
• CPC Class Codes: H04N 9/8227 : the additional signal being at least another television signal

Abstract

The video signal recording and reproducing apparatus of the invention includes: a receiving section for receiving a television signal; an image compression section for compressing an amount of information per unit time of the received continuous video signal; a writing section for intermittently writing a compressed video signal, obtained as an output of the image compression section, onto a hard disk apparatus via a magnetic head; a reading section for intermittently reading out the written compressed video signal from the hard disk apparatus via the magnetic head; a decoding section for restoring the read compressed video signal into an original video signal; a display section for displaying the restored video signal; and a control section for controlling the writing section and the reading section such that writing the video signal onto the hard disk apparatus and reading an arbitrary video signal, which was previously written onto the hard disk apparatus, from the hard disk apparatus are performed apparently simultaneously and continuously.

Claims

1. A video signal recording and reproducing apparatus, which records and reproduces video signals simultaneously, comprising:

an input section operable to input a video signal;

an intermittent video signal generating section operable to generate a writing intermittent video signal from the input video signal by compressing the input video signal along a time axis per a time T1;

a writing section operable to write the writing intermittent video signal onto a disk via a head so as to record the input video signal;

a reading section operable to read arbitrary video recorded onto the disk via the head so as to obtain a reading intermittent video signal;

an expansion section operable to expand the reading intermittent video signal so as to obtain an original video signal; and

a control section operable to control the writing section and the reading section to cause the input video signal to be recorded on the disk and the previously recorded video signal to be reproduced, whereby the reproduced video signal follows the input video signal being recorded with a variable relative time difference, the variable relative time difference being shortened gradually,

wherein, the time T1 is set to be longer than T, where the time T is defined as a sum of seek time required for moving the head to write the unit of the writing intermittent video signal onto the disk, time required for writing the unit of the writing intermittent video signal onto the disk, seek time required for moving the head to read the unit of the reading intermittent video signal from the disk, and time required for reading the unit of the reading intermittent video signal from the disk.

2. The video signal recording and reproducing apparatus according to claim 1,

wherein said time difference is adjusted by high speed reproduction of the reproduced input video signal.

3. The video signal recording and reproducing apparatus according to claim 1, further comprising:

a recording section operable to record information related to a time at which a video signal was recorded.

4. The video signal recording and reproducing apparatus according to claim 1, further comprising:

an output section to output a display information representing a progress status of the reproduction of the intermittent video signals to a monitor.

5. The video signal recording and reproducing apparatus according to claim 1, further comprising:

an output section to output both an image of the reproduced video signal and an image of the recorded video signal for viewing at a same time on respective portions of a monitor.

6. The video signal recording and reproducing apparatus according to claim 1, further comprising:

a recording section operable to retain positional information related to a position at which the writing section wrote the intermittent video signal so as to enable the control section to determine a position at which the reading section may read the recorded intermittent video signal.

7. A display, equipped with a video signal recording and reproducing apparatus which records and reproduces video signals simultaneously, comprising:

an input section operable to input a video signal;

an intermittent video signal generating section operable to generate a writing intermittent video signal from the input video signal by compressing the input video signal along a time axis per a time T1;

a writing section operable to write the writing intermittent video signal onto a disk via a head so as to record the video;

a reading section operable to reading arbitrary video recorded onto the disk via the head so as to obtain a reading intermittent video signal;

an expansion section operable to expand the reading intermittent video signal so as to obtain an original video signal;

a monitor to display an image expanded by the expansion section; and

a control section operable to control the writing section and the reading section to cause the input video signal to be recorded on the disk and the previously recorded input video signal to be reproduced, whereby the reproduced input video signal follows the input video signal being recorded with a relative time difference selectively adjustable by the user,

wherein, the time T1 is set to be longer than T, where the time T is defined as a sum of seek time required for moving the head to write the unit of the writing intermittent video signal onto the disk, time required for writing the unit of the writing intermittent video signal onto the disk, seek time required for moving the head to read the unit of the reading intermittent video signal from the disk, and time required for reading the unit of the reading intermittent video signal from the disk.

8. A control apparatus, for a video signal recording and reproducing apparatus which records and reproduces video signals simultaneously,

said video signal recording and reproducing apparatus comprising:

an input section operable to input a video signal;

an intermittent video signal generating section operable to generate a writing intermittent video signal from the input video signal by compressing the input video signal along a time axis per a time T1;

a writing section operable to write the writing intermittent video signal onto a disk via a head so as to record the input video signal;

a reading section operable to reading arbitrary video recorded onto the disk via the head so as to obtain a reading intermittent video signal;

an expansion section operable to expand the reading intermittent video signal so as to obtain an original video signal;

said control apparatus comprising;

a control section operable to control the writing section and the reading section to cause the input video signal to be recorded on the disk and the previously recorded input video signal to be reproduced, whereby the reproduced input video signal follows the input video signal being recorded with a relative time difference selectively adjustable by the user,

wherein, the time T1 is set to be longer than T, where the time T is defined as a sum of seek time required for moving the head to write the unit of the writing intermittent video signal onto the disk, time required for writing the unit of the writing intermittent video signal onto the disk, seek time required for moving the head to read the unit of the reading intermittent video signal from the disk, and time required for reading the unit of the reading intermittent video signal from the disk.