# US 2013/0156401 A1 · Disk playback apparatus

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- Number: US 2013/0156401 A1
- Document ID: US20130156401A1
- Status: Published application
- Kind: A1
- Application number: 13/817,856
- Filed: 2012-02-29
- Published: 2013-06-20
- Earliest claimed: 2011-03-22
- Assignees: Panasonic Corporation
- Inventors: Takashi Yoshimoto; Yoshinori Hiramatsu
- Web page: https://patentgrep.com/patent/US20130156401A1

## CPC

- H04N 9/87: Regeneration of colour television signals (H04N9/80 takes precedence)
- G11B 19/047: {Recovery from power failure}
- G11B 20/10: Digital recording or reproducing
- G11B 27/105: {of operating discs}
- H04N 21/42646: {for reading from or writing on a non-volatile solid state storage medium, e.g. DVD, CD-ROM}
- H04N 21/4325: {by playing back content from the storage medium (reproduction of recorded television signals H04N5/76; reproduction of recorded television signals H04N9/79)}
- H04N 21/4432: {Powering on the client, e.g. bootstrap loading using setup parameters being stored locally or received from the server (resetting in general G06F1/14; program loading or initiating in general G06F9/445; bootstrapping in general G06F9/4401; secure boots of computer platforms G06F21/57)}
- H04N 21/8455: {involving pointers to the content, e.g. pointers to the I-frames of the video stream}
- G11B 2020/10972: {Management of interruptions, e.g. due to editing}
- G11B 2220/2541: Blu-ray discs; Blue laser DVR discs
- H04N 5/85: on discs or drums
- H04N 9/8042: {involving data reduction}
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION
- G11B: INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER (recording measured values in a way that does not require playback through a transducer G01D9/00; recording or playback apparatus using mechanically marked tape, e.g. punched paper tape, or using unit records, e.g. punched or magnetically marked cards G06K; transferring data from one type of record carrier to another G06K1/18; circuits for coupling output of reproducer to radio receiver H04B1/20; gramophone pick-ups or like acoustic electromechanical transducers or circuits therefor H04R)

## Abstract

When a disc player device (100) is powered on again, playback information stored in a nonvolatile storage portion (160) is retrieved by a playback information retrieving portion (170) and delivered to a user operation auto-executing portion (180). It is determined whether or not user input instructions are limited, on the basis of user operation mask information obtained by a user operation mask information obtaining portion (130). An information comparing portion (182) compares playlist information, and an information comparing portion (184) compares play item information. Finally, a title including playlist information and play item information last stored in the nonvolatile storage portion (160) before the power-on of the disc player device (100) is searched for, and normal playback of the title is started. Such a configuration allows for quick playback resuming of a BD-J title being played at the time of the power-off, with a Java application running.

## Claims

### Claim 1

A disc player device comprising:
a signal reading portion that reads content information recorded in a disc;
a playback portion that plays a title on the basis of the read content information;
a user operation mask information obtaining portion that obtains user operation mask information from the content information;
a playback information obtaining portion that obtains playlist information, play item information, and playlist total playback time information as playback information, which are assigned to a title being played by the playback portion;
a nonvolatile storage portion in which the playback information is stored;
a playback information writing portion that stores, in the nonvolatile storage portion, the playback information read by the playback information obtaining portion;
a playback information retrieving portion that retrieves the playback information from the nonvolatile storage portion; and
a user operation auto-executing portion that executes a user operation not being limited by the user operation mask information obtained by the user operation mask information obtaining portion,
wherein the user operation auto-executing portion includes:
a playlist information comparing portion that compares the playlist information last stored in the nonvolatile storage portion before the disc player device is powered on, with playlist information on a title read by the signal reading portion after the disc player device is powered on; and
a play item information comparing portion that, after the comparison process for the playlist information, compares the play item information last stored in the nonvolatile storage portion before the disc player device is powered on, with play item information on the title read by the signal reading portion after the disc player device is powered on, and
wherein if there is one or more user operations, execution of which is not limited by the user operation mask information, the comparison process for the playlist information and the comparison process for the play item information automatically execute the user operation not being limited by the user operation mask information and provide title searching at a speed higher than a normal speed of 1× until playlist information and play item information on a title currently being read by the signal reading portion match with the playlist information and the play item information stored in the nonvolatile storage portion before the disc player device is powered on.

### Claim 2 (depends on 1)

The disc player device according to claim 1, wherein
the user operation auto-executing portion includes a time-out detecting portion that monitors a time period of a first comparison process executed by the playlist information comparing portion and a time period of a second comparison process executed by the play item information comparing portion, and detects a time-out if the time period of the first comparison process exceeds one fixed time period predetermined therefor or the time period of the second comparison process exceeds another fixed time period predetermined therefor, and
the time-out detecting portion stops a comparison process of the playlist information comparing portion or the play item information comparing portion, in which the time-out is detected, and causes the playback portion to play a title to which playlist information and play item information to be compared at the time of the comparison process being stopped are assigned.

### Claim 3 (depends on 2)

The disc player device according to claim 2, wherein the time-out detecting portion has a function of, if the comparison process is stopped due to the time-out, erasing the playback information stored in the nonvolatile storage portion.

### Claim 4 (depends on 1)

The disc player device according to claim 1, wherein the user operation auto-executing portion further includes a playback information comparison optionally-stopping portion that forcibly stops comparison processes being executed by the playlist information comparing portion and the play item information comparing portion, in response to a user input operation.

### Claim 5 (depends on 4)

The disc player device according to claim 4, wherein the playback information comparison optionally-stopping portion has a function of, if the information comparison processes are stopped in response to the user input operation, erasing the playback information stored in the nonvolatile storage portion.

### Claim 6 (depends on 1)

The disc player device according to claim 1, wherein the user operation auto-executing portion further includes an outputting portion for, during the execution of the comparison process by the playlist information comparing portion or by the play item information comparing portion, outputting a message indicating that title searching is in process.

### Claim 7 (depends on 1)

The disc player device according to claim 1, wherein the user operation auto-executing portion further includes an outputting portion for, if the user operation mask information obtained by the user operation mask information obtaining portion limits execution of all user operations, outputting a message indicating that title searching is impossible.