Recording and reproducing apparatus and recording and reproducing method

• US 20050265164A1
• Filed: 05/27/2005
• Published: 12/01/2005
• Est. Priority Date: 05/31/2004
• Status: Abandoned Application

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Koshino, Naozumi
• Application Number:
  US11/138,904
• Publication Number:
  US 20050265164A1
• Time in Patent Office: Days
• US Class Current: 369/47.100
• CPC Class Codes: G11B 27/034 on discs G11B27/036, G11B27/038 take precedence
• CPC Class Codes: H04N 21/25816 involving client authentication restricting access to computer systems by authenticating users using a predetermined code G06F21/33; cryptographic authentication protocols H04L9/32; networks authentication protocols H04L63/08; authentication in wireless network security H04W12/06
• CPC Class Codes: H04N 21/63345 by transmitting keys key distribution for secret or secure communication H04L9/08; network support of key management H04L63/06
• CPC Class Codes: H04N 21/6375 for requesting retransmission , e.g. of data packets lost or corrupted during transmission from serverARQ protocols H04L1/18; implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP] H04L69/16
• CPC Class Codes: H04N 5/76 Television signal recording
• CPC Class Codes: H04N 5/765 Interface circuits between an apparatus for recording and another apparatus
• 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 5/85 on discs or drums
• CPC Class Codes: H04N 7/1675 Providing digital key or authorisation information for generation or regeneration of the scrambling sequence pseudo-random number generators in general G06F7/58
• CPC Class Codes: H04N 9/8042 involving data reduction
• CPC Class Codes: H04N 9/8227 the additional signal being at least another television signal
• CPC Class Codes: H04N 9/8715 involving the mixing of the reproduced video signal with a non-recorded signal, e.g. a text signal

Abstract

A recording and reproducing apparatus comprises a communication section which acquires content information from an external device via a network, a recording section which records in a storage region the content information, and a control section which, after it has been detected that the content information stored in the recording section cannot be read out, when it is determined that the content information cannot be reacquired from the external device due to an occurrence of a failure with a function of the communication section or recording section, controls a command signal for causing a terminal device over a network to substitute reacquisition of the content information from the terminal device so as to be transmitted to the terminal device.

Claims

1. A recording and reproducing apparatus comprising:

a communication section which acquires content information from an external device via a network;

a recording section which records in a storage region the content information acquired from the communication section; and

a control section which, after it has been detected that the content information stored in the recording section cannot be read out, when it is determined that the content information cannot be reacquired from the external device due to an occurrence of a failure with a function of the communication section or recording section, controls a command signal for causing a terminal device over a network to substitute acquisition of the content information so as to be transmitted to the terminal device via the communication section.

2. A recording and reproducing apparatus according to claim 1, wherein the communication section supplies identification information on a user who attempts to acquire the content information to the external device during acquisition of the content information, and acquires decoding key data for use in decoding when reproducing the content information and license data at the same time of acquiring the content information, and

the control section supplies the user identification information, the decoding key data, and the license data to the terminal device over the network when the control section causes the terminal device over the network to substitute reacquisition of the content information.

3. A recording and reproducing apparatus according to claim 1, further comprising:

a reproducing section which receives via the communication section a stream signal obtained when the reacquired content information has been decoded based on the decoding key data in the terminal device over the network, and then, outputs a reproduction signal based on the stream signal.

4. A recording and reproducing apparatus according to claim 1, wherein, after it has been detected that the content information stored in the recording section cannot be read out, when it is determined that the content information cannot be reacquired from the external device due to an occurrence of a failure with a function of the communication section or recording section, the control section transmits a request signal to the terminal device via the communication section in order to request the terminal device over the network to issue information for determining whether or not the external device can substitute reacquisition of the content information, and

after the information for determination has been acquired from the terminal device, when it is determined that the terminal device can substitute reacquisition of the content information, the control section controls decoding key data for use in decoding when reproducing the content information so as to be supplied to the terminal device.

5. A recording and reproducing apparatus according to claim 1, wherein, when the control section is commanded to substitute reacquisition of content information from another terminal device over the network, the control section provides an access to an external device over the network via the communication section in response to the commanding to carry out reacquisition of the content information.

6. A recording and reproducing apparatus according to claim 1, wherein, when the control section is commanded to substitute reacquisition of content information as well as supply of decoding key data from another terminal device over the network, the control section provides an access to an external device over the network via the communication section in response to the commanding;

and when the acquired content information is decoded based on the decoding key data, thereby obtaining a stream signal, the control section controls the thus obtained stream signal so as to be transmitted to the another terminal device via the communication section.

7. A recording and reproducing apparatus according to claim 1, wherein, when the control section is requested from another terminal device over the network to issue information for determining whether or not the recording and reproducing apparatus can substitute reacquisition of content information, the control section controls the information so as to be supplied to the another terminal device over the network via the communication section.

8. A recording and reproducing apparatus according to claim 1, further comprising:

a reproducing section which generates and outputs a reproduction signal based on the content information, wherein,

when it is determined that the reproducing section functions, the control section controls the terminal device over the network to acquire the content information, to transfer a stream signal after converted based on the acquired information, and to carry out reproduction by the reproducing section based on the stream signal acquired via the communication section; and

, when it is determined that a failure occurs with a function of the reproducing section, the control section controls the terminal device over the network to acquire the content information and reproduce the acquired information on the terminal device.

9. A recording and reproducing apparatus according to claim 1, wherein, when it is determined that a failure occurs with a function of the reproducing section, the control section generates and outputs a display signal for displaying that the control section causes the terminal device over the network to reproduce the content information.

10. A recording and reproducing apparatus according to claim 1, wherein, after the recording and reproducing apparatus has been powered on from an off state thereof, when it is determined whether or not the content information recorded earlier by the recording section is currently recorded in a state in which the content information can be reproduced, it is detected that the information cannot be reproduced, and it is determined that the content information cannot be reacquired from the external device due to an occurrence of a failure with a function of the communication section or recording section, the control section controls a command signal for causing the terminal device over the network to substitute reacquisition of the content information from the external device, via communication section, so as to be transmitted to the terminal device via the communication section.

11. A recording and reproducing method comprising:

acquiring content information from an external device via a network;

recording in a storage region the acquired content information; and

after it has been detected that the content information cannot be read out, when it is determined that the content information cannot be reacquired from the external device due to an occurrence of a failure with a communication function or a recording function of the recording and reproducing apparatus, controlling a command signal for causing a terminal device over the network to substitute acquisition of the content information from the external device due to the communication so as to be transmitted to the terminal device via the communication.

12. A recording and reproducing method according to claim 11, wherein, when the content information is acquired from the external device, identification information on a user who attempts to acquire the content information is supplied to the external device, and decoding key data for use in decoding when reproducing the content information and license data are acquired at the same time of acquiring the content information, and

the user identification information, the decoding key data, and the license data are supplied to the terminal device over the network when the terminal device over the network is caused to substitute reacquisition of the content information.

13. A recording and reproducing method according to claim 11, wherein the content information is required from the external device in the terminal device over the network, and upon receipt of a stream signal obtained when the reacquired content information has been decoded based on the decoding key data, a reproduction signal is outputted based on the stream signal.

14. A recording and reproducing method according to claim 11, wherein, after it has been detected that the stored content information cannot be read out, when it is determined that the content information cannot be reacquired from the external device due to an occurrence of a failure with the communication function or recording function, a request signal is transmitted to the terminal via the communication section in order to request the terminal device to issue information for determining whether or not the external device can substitute reacquisition of the content information, and

after the information for determination has been acquired from the terminal device, when it is determined that the terminal device can substitute reacquisition of the content information, decoding key data for use in decoding when reproducing the content information is controlled so as to be supplied to the terminal device.

15. A recording and reproducing method according to claim 11, wherein, when a command is issued to substitute reacquisition of content information from another terminal device over the network, an access is provided to the external device over the network due to the communication in response to the command to carry out reacquisition of the content information.

16. A recording and reproducing method according to claim 11, wherein, when a command is issued to substitute reacquisition of content information as well as supply of decoding key data from another terminal device over the network, an access is provided to the external device over the network in response to the command, and when the acquired content information is decoded based on the decoding key data, thereby obtaining a stream signal, the thus obtained stream signal is controlled so as to be transmitted to the another terminal device.

17. A recording and reproducing method according to claim 11, wherein, when another terminal device over the network requests to issue information for determining whether or not the recording and reproducing apparatus can substitute reacquisition of content information, the information is controlled so as to be supplied to the another terminal device over the network.

18. A recording and reproducing method according to claim 11, wherein, when it is determined that a reproducing function of the recording and reproducing apparatus which generates and outputs a reproduction signal based on the content information functions, the terminal device over the network is controlled to acquire the content information, to transfer a stream signal after converted based on the acquired information, and to carry out reproduction by the reproducing function based on the acquired stream signal, and wherein, when it is determined that a failure occurs with the reproducing function, the terminal device over the network is controlled to acquire the content information and reproduce the acquired information on the terminal device.

19. A recording and reproducing method according to claim 11, wherein, when it is determined that a failure occurs with the reproducing function, a display signal for displaying that the terminal device over the network is caused to reproduce the content information is generated and outputted.

20. A recording and reproducing method according to claim 11, wherein, after the recording and reproducing apparatus has been powered on from an off state thereof, when it is determined whether or not the content information recorded earlier in the storage region is currently recorded in a state in which the content information can be reproduced, it is detected that the information cannot be reproduced, and it is determined that the content information cannot be reacquired from the external device due to an occurrence of a failure with the communication function or recording function, a command signal for causing the terminal device over the network to substitute reacquisition of the content information from the external device is controlled so as to be transmitted to the terminal device.