WO2012089491A1 - A personal video recorder - Google Patents

A personal video recorder Download PDF

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Publication number
WO2012089491A1
WO2012089491A1 PCT/EP2011/072530 EP2011072530W WO2012089491A1 WO 2012089491 A1 WO2012089491 A1 WO 2012089491A1 EP 2011072530 W EP2011072530 W EP 2011072530W WO 2012089491 A1 WO2012089491 A1 WO 2012089491A1
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WO
WIPO (PCT)
Prior art keywords
packets
recorded
voice
channel
video recorder
Prior art date
Application number
PCT/EP2011/072530
Other languages
French (fr)
Inventor
Osman SOLAKOGLU
Original Assignee
Arcelik Anonim Sirketi
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Arcelik Anonim Sirketi filed Critical Arcelik Anonim Sirketi
Priority to EP11802030.4A priority Critical patent/EP2659665A1/en
Publication of WO2012089491A1 publication Critical patent/WO2012089491A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
    • H04N21/4147—PVR [Personal Video Recorder]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/418—External card to be used in combination with the client device, e.g. for conditional access
    • H04N21/4184—External card to be used in combination with the client device, e.g. for conditional access providing storage capabilities, e.g. memory stick
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
    • H04N21/4334—Recording operations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/43622—Interfacing an external recording device
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
    • H04N21/4385—Multiplex stream processing, e.g. multiplex stream decrypting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/4408—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video stream encryption, e.g. re-encrypting a decrypted video stream for redistribution in a home network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/4508—Management of client data or end-user data
    • H04N21/4532—Management of client data or end-user data involving end-user characteristics, e.g. viewer profile, preferences
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/913—Television signal processing therefor for scrambling ; for copy protection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/804—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components
    • H04N9/8042—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components involving data reduction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/804—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components
    • H04N9/806—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components with processing of the sound signal
    • H04N9/8063—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components with processing of the sound signal using time division multiplex of the PCM audio and PCM video signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/913—Television signal processing therefor for scrambling ; for copy protection
    • H04N2005/91357—Television signal processing therefor for scrambling ; for copy protection by modifying the video signal
    • H04N2005/91364—Television signal processing therefor for scrambling ; for copy protection by modifying the video signal the video signal being scrambled
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
    • H04N9/8205—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
    • H04N9/8205—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal
    • H04N9/8227—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal the additional signal being at least another television signal

Definitions

  • the present invention relates to a personal video recorder.
  • the aim of the present invention is the realization of a personal video recorder which can record into the external memory in a fast and secure manner.
  • the personal video recorder realized in order to attain the aim of the present invention, explicated in the first claim and the respective claims thereof, comprises a control unit which provides the TS packets containing the voice and image signals that belong to the channel to be recorded to be encrypted by means of an encryptor without applying any decoding and encoding operations and the encrypted TS packets to be recorded into the external memory.
  • the demux filter records the TS packets containing the voice and image signals that belong to the channel to be recorded into the memory unit. After reading and encrypting the TS packets recorded in the memory unit, the encryptor records the encrypted TS packets into the memory unit. The portable media driver reads the encrypted TS packets recorded in the memory unit and records them into the external memory.
  • TS packets containing voice and image signals that belong to the channel to be recorded are recorded into and read from a dedicated first memory area in the memory unit by the demux filter, encryptor and portable media driver simultaneously.
  • the personal video recorder of the present invention is suitable for being used as a television or receiver.
  • the TS packets containing the voice and image signals that belong to the channel to be recorded are recorded into the external memory without applying any decoding and encoding operations.
  • the personal video recorder of the present invention records the images in the broadcast signals, multangular images in 3D broadcasts, voices (the voice data containing more than one language, music etc. for the same channel), subtitles (can be in multiple languages), channel/broadcast data packets (teletext, electronic program guide etc.) that belong to the channel to be recorded into the external memory as TS packets and can play the recorded TS packets.
  • Figure 1 – is the schematic view of a personal video recorder.
  • Pr The TS packets containing the voice and image signals that belong to the channel to be recorded (K1)
  • Pw The TS packets containing the voice and image signals that belong to the channel to be watched (K2)
  • F1 A first memory area dedicated for recording the TS packets containing the voice and image signals that belong to the channel to be recorded (K1) (Pr)
  • F2 A second memory area dedicated for recording the TS packets containing the voice and image signals that belong to the channel to be watched (K1) (Pw)
  • the personal video recorder (1) of the present invention comprises a receiver (2) which receives the digital broadcast signals, a demodulator (3) which converts the broadcast signals received from the receiver (2) into TS (transport stream) packets, a demux filter (4) which selects the TS packets received from the demodulator (3), a memory unit (5), a decoder (6) which decodes the TS packets into voice and image signals, an encryptor (7), an output means (8) to which the voice and image signals received from the decoder (6) are directed, a portable media driver (9) which records the broadcast signals into an external memory according to the preferences of the user and a control unit (10) ( Figure 1).
  • the control unit (10) When the user desires to record a channel (K1) from the digital broadcast signals received by the receiver (2), the control unit (10) provides the TS packets containing the voice and image signals that belong to the channel to be recorded (K1) (Pr) to be encrypted by means of the encryptor (7) without applying any decoding and encoding operations and the encrypted TS packets (Pe) to be recorded into the external memory.
  • the user desires to record a channel (K1) from the digital broadcast signals reaching the personal video recorder (1) and received by the receiver (2), he/she transmits the data of channel to be recorded (K1) to the control unit (10) by means of an interface (not shown in the figure).
  • the data of channel to be recorded (K1) is transmitted to the demux filter (4) by means of the control unit (10).
  • the demux filter (4) rules out the incoming TS packets according to their headers and records the TS packets containing the voice and image signals that belong to the channel to be recorded (K1) (Pr) into the memory unit (5).
  • the encryptor (7) After reading and encrypting the TS packets (Pr) recorded in the memory unit (5), the encryptor (7) records the encrypted TS packets (Pe) into the memory unit (5).
  • the portable media driver (9) reads the encrypted TS packets (Pe) recorded in the memory unit (5) and records them into the external memory.
  • the broadcast signals received by the personal video recorder (1) are in DVB format.
  • the encrypted TS packets (Pe) read from the external memory by means of the portable media driver (9) are decrypted by the encryptor (7) and recorded into the memory unit (5).
  • the TS packets (Pr) recorded in the memory unit (5) are read by the decoder (6) and converted to a suitable format in order to be supplied to the output means (8).
  • the encrypted TS packets (Pe) recorded in the external memory and containing the voice and image signals that belong to the channel to be recorded (K1) can only be watched in the personal video recorder (1) wherein the recording operation is performed.
  • the memory unit (5) comprises a first memory area dedicated for recording the TS packets containing the voice and image signals that belong to the channel to be recorded (K1) (Pr) (F1).
  • the TS packets that belong to the channel to be recorded (K1) (Pr) are recorded successively one after the other into the first memory area (F1) by means of the demux filter (4).
  • the encryptor (7) receives the TS packets that belong to the channel to be recorded (K1) (Pr) from the first memory area (F1) and after encrypting them, writes the encrypted TS packets (Pe) again into the first memory field (F1) successively.
  • the portable media driver (9) receives the encrypted TS packets (Pe) from the first memory area (F1) and records them into the external memory.
  • the operations of reading the voice and image signals, which belong to the channel to be recorded (K1), by the demux filter (4), encryptor (7) and portable media driver (9) simultaneously from the first memory area (F1) and recording them are directed by means of the control unit (10).
  • the memory unit (5) is a RAM (Random Access Memory).
  • the personal video recorder (1) is a digital television.
  • the data of channel to be watched (K2) is transmitted to the demux filter (4) by means of the control unit (10).
  • the demux filter (4) rules out the incoming TS packets according to their headers and records the TS packets containing the voice and image signals that belong to the channel to be recorded (K1) (Pr) and the TS packets containing the voice and image signals that belong to the channel to be watched (K2) (Pw) into the memory unit (5).
  • the TS packets (Pw) which are recorded in the memory unit (5) and which belong to the channel to be watched (K2) are read by the decoder (6) and converted to a suitable format in order to be supplied to the output means (8).
  • the memory unit (5) comprises a second memory area (F2) which is different than the first memory area dedicated for recording the TS packets containing the voice and image signals that belong to the channel to be recorded (K1) (Pr) (F1), and wherein the TS packets containing the voice and image signals that belong to the channel to be watched (K2) (Pw) are recorded.
  • F2 second memory area
  • the personal video recorder (1) is a set-top-box.
  • the voice and image signals that belong to the channel to be recorded (K1) are recorded by means of the control unit (10) without changing the TS packet that is the format of the broadcasted signals, a hard disk is not required and hence, they are recorded into the external memory. No decoding and encoding operation is applied to the TS packets containing the voice and image signals that belong to the channel to be recorded (K1) (Pr). Since the voice and image signals that belong to the channel to be recorded (K1) are read and recorded simultaneously by the demux filter (4), the encryptor (7) and the portable media driver (9), the capacity in the memory unit (5) needed for the recording operation is reduced.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Television Signal Processing For Recording (AREA)

Abstract

The present invention relates to a personal video recorder (1 ) comprising a receiver (2) which receives the digital broadcast signals, a demodulator (3) which converts the broadcast signals received from the receiver (2) into TS (transport stream) packets, a demux filter (4) which picks the TS packets received from the demodulator (3), a memory unit (5), a decoder (6) which decodes the TS packets into voice and image signals, an encryptor (7), an output means (8) to which the voice and image signals received from the decoder (6) are directed, a portable media driver (9) which records the broadcast signals into an external memory according to the preferences of the user and a control unit (10).

Description

A PERSONAL VIDEO RECORDER
The present invention relates to a personal video recorder.
In personal video recorders, due to both the costly hard disks and the ability to store only limited data, the need for recording the image to be recorded in an external memory increases. The image data to be recorded into the external memory is required to be legally protected against copying. Furthermore, decoding and encoding operations are also applied to the image data. All these operations make it difficult to write the image data into the external memory. The state of the art embodiments to solve this problem require high processing power and memory and since they do not give precise results, they do not meet the needs of the user completely.
The aim of the present invention is the realization of a personal video recorder which can record into the external memory in a fast and secure manner.
The personal video recorder realized in order to attain the aim of the present invention, explicated in the first claim and the respective claims thereof, comprises a control unit which provides the TS packets containing the voice and image signals that belong to the channel to be recorded to be encrypted by means of an encryptor without applying any decoding and encoding operations and the encrypted TS packets to be recorded into the external memory.
The demux filter records the TS packets containing the voice and image signals that belong to the channel to be recorded into the memory unit. After reading and encrypting the TS packets recorded in the memory unit, the encryptor records the encrypted TS packets into the memory unit. The portable media driver reads the encrypted TS packets recorded in the memory unit and records them into the external memory.
In an embodiment of the present invention, TS packets containing voice and image signals that belong to the channel to be recorded are recorded into and read from a dedicated first memory area in the memory unit by the demux filter, encryptor and portable media driver simultaneously.
The personal video recorder of the present invention is suitable for being used as a television or receiver.
By means of the present invention, the TS packets containing the voice and image signals that belong to the channel to be recorded are recorded into the external memory without applying any decoding and encoding operations.
The personal video recorder of the present invention records the images in the broadcast signals, multangular images in 3D broadcasts, voices (the voice data containing more than one language, music etc. for the same channel), subtitles (can be in multiple languages), channel/broadcast data packets (teletext, electronic program guide etc.) that belong to the channel to be recorded into the external memory as TS packets and can play the recorded TS packets.
The personal video recorder realized in order to attain the aim of the present invention is illustrated in the attached figure, where:
Figure 1 – is the schematic view of a personal video recorder.
The elements illustrated in the figure are numbered as follows:
  1. Personal video recorder
  2. Receiver
  3. Demodulator
  4. Demux filter
  5. Memory unit
  6. Decoder
  7. Encryptor
  8. Output means
  9. Portable media driver
  10. Control unit
The abbreviations related to the supplementary elements used in explicating the present invention are given below:
K1: The channel to be recorded
K2: The channel to be watched
Pr: The TS packets containing the voice and image signals that belong to the channel to be recorded (K1)
Pe: The encrypted TS packets
Pw: The TS packets containing the voice and image signals that belong to the channel to be watched (K2)
F1: A first memory area dedicated for recording the TS packets containing the voice and image signals that belong to the channel to be recorded (K1) (Pr)
F2: A second memory area dedicated for recording the TS packets containing the voice and image signals that belong to the channel to be watched (K1) (Pw)
The personal video recorder (1) of the present invention comprises a receiver (2) which receives the digital broadcast signals, a demodulator (3) which converts the broadcast signals received from the receiver (2) into TS (transport stream) packets, a demux filter (4) which selects the TS packets received from the demodulator (3), a memory unit (5), a decoder (6) which decodes the TS packets into voice and image signals, an encryptor (7), an output means (8) to which the voice and image signals received from the decoder (6) are directed, a portable media driver (9) which records the broadcast signals into an external memory according to the preferences of the user and a control unit (10) (Figure 1).
When the user desires to record a channel (K1) from the digital broadcast signals received by the receiver (2), the control unit (10) provides the TS packets containing the voice and image signals that belong to the channel to be recorded (K1) (Pr) to be encrypted by means of the encryptor (7) without applying any decoding and encoding operations and the encrypted TS packets (Pe) to be recorded into the external memory.
When the user desires to record a channel (K1) from the digital broadcast signals reaching the personal video recorder (1) and received by the receiver (2), he/she transmits the data of channel to be recorded (K1) to the control unit (10) by means of an interface (not shown in the figure). The data of channel to be recorded (K1) is transmitted to the demux filter (4) by means of the control unit (10). The demux filter (4) rules out the incoming TS packets according to their headers and records the TS packets containing the voice and image signals that belong to the channel to be recorded (K1) (Pr) into the memory unit (5). After reading and encrypting the TS packets (Pr) recorded in the memory unit (5), the encryptor (7) records the encrypted TS packets (Pe) into the memory unit (5). The portable media driver (9) reads the encrypted TS packets (Pe) recorded in the memory unit (5) and records them into the external memory.
In an embodiment of the present invention, the broadcast signals received by the personal video recorder (1) are in DVB format.
Since the voice and image signals that belong to the channel to be recorded (K1) are recorded as TS packets, no decoding and encoding operation is applied. Thus, losses occurring in accordance with the decoding and encoding operations are eliminated and the broadcast signals can be recorded into the external memory quickly immediately after passing through the demux filter (4).
When the images recorded in the external memory are desired to be watched, the encrypted TS packets (Pe) read from the external memory by means of the portable media driver (9) are decrypted by the encryptor (7) and recorded into the memory unit (5). The TS packets (Pr) recorded in the memory unit (5) are read by the decoder (6) and converted to a suitable format in order to be supplied to the output means (8).
In an embodiment of the present invention, the encrypted TS packets (Pe) recorded in the external memory and containing the voice and image signals that belong to the channel to be recorded (K1) can only be watched in the personal video recorder (1) wherein the recording operation is performed.
In an embodiment of the present invention, the memory unit (5) comprises a first memory area dedicated for recording the TS packets containing the voice and image signals that belong to the channel to be recorded (K1) (Pr) (F1). The TS packets that belong to the channel to be recorded (K1) (Pr)are recorded successively one after the other into the first memory area (F1) by means of the demux filter (4). Simultaneously, the encryptor (7) receives the TS packets that belong to the channel to be recorded (K1) (Pr) from the first memory area (F1) and after encrypting them, writes the encrypted TS packets (Pe) again into the first memory field (F1) successively. Simultaneously with the demux filter (4) and the encryptor (7), the portable media driver (9) receives the encrypted TS packets (Pe) from the first memory area (F1) and records them into the external memory. The operations of reading the voice and image signals, which belong to the channel to be recorded (K1), by the demux filter (4), encryptor (7) and portable media driver (9) simultaneously from the first memory area (F1) and recording them are directed by means of the control unit (10).
In an embodiment of the present invention, the memory unit (5) is a RAM (Random Access Memory).
In another embodiment of the present invention, the personal video recorder (1) is a digital television.
In a variation of this embodiment, when a selection of the channel to be watched (K2) is transmitted to the control unit (10) by the user by means of an interface (not shown in the figure), the data of channel to be watched (K2) is transmitted to the demux filter (4) by means of the control unit (10). The demux filter (4) rules out the incoming TS packets according to their headers and records the TS packets containing the voice and image signals that belong to the channel to be recorded (K1) (Pr) and the TS packets containing the voice and image signals that belong to the channel to be watched (K2) (Pw) into the memory unit (5). The TS packets (Pw) which are recorded in the memory unit (5) and which belong to the channel to be watched (K2) are read by the decoder (6) and converted to a suitable format in order to be supplied to the output means (8).
In a variation of this embodiment, the memory unit (5) comprises a second memory area (F2) which is different than the first memory area dedicated for recording the TS packets containing the voice and image signals that belong to the channel to be recorded (K1) (Pr) (F1), and wherein the TS packets containing the voice and image signals that belong to the channel to be watched (K2) (Pw) are recorded.
In another embodiment of the present invention, the personal video recorder (1) is a set-top-box.
In the personal video recorder (1) of the present invention, since the voice and image signals that belong to the channel to be recorded (K1) are recorded by means of the control unit (10) without changing the TS packet that is the format of the broadcasted signals, a hard disk is not required and hence, they are recorded into the external memory. No decoding and encoding operation is applied to the TS packets containing the voice and image signals that belong to the channel to be recorded (K1) (Pr). Since the voice and image signals that belong to the channel to be recorded (K1) are read and recorded simultaneously by the demux filter (4), the encryptor (7) and the portable media driver (9), the capacity in the memory unit (5) needed for the recording operation is reduced.
It is to be understood that the present invention is not limited by the embodiments disclosed above and a person skilled in the art can easily introduce different embodiments. These should be considered within the scope of the protection postulated by the claims of the present invention.

Claims (10)

  1. A personal video recorder (1) comprising a receiver (2) which receives the digital broadcast signals, a demodulator (3) which converts the broadcast signals received from the receiver (2) into TS (transport stream) packets, a demux filter (4) which selects the TS packets received from the demodulator (3), a memory unit (5), a decoder (6) which decodes the TS packets into voice and image signals, an encryptor (7), an output means (8) to which the voice and image signals received from the decoder (6) are directed, a portable media driver (9) which records the broadcast signals into an external memory according to the preferences of the user and a control unit (10), characterized by the control unit (10) which provides the TS packets containing the voice and image signals that belong to the channel to be recorded (K1) (Pr) to be encrypted by means of the encryptor (7) without applying any decoding and encoding operations and the encrypted TS packets (Pe) to be recorded into the external memory.
  2. A personal video recorder (1) as in Claim 1, characterized by the demux filter (4) which rules out the arriving TS packets according to their headers and records the TS packets (Pr) containing the voice and image signals that belong to the channel to be recorded (K1) into the memory unit (5).
  3. A personal video recorder (1) as in Claim 1 or 2, characterized by the encryptor (7) which, after reading and encrypting the TS packets (Pr) recorded in the memory unit (5), records the encrypted TS packets (Pe) into the memory unit (5).
  4. A personal video recorder (1) as in any one of the above claims, characterized by the portable media driver (9) which reads the encrypted TS packets (Pe) recorded in the memory unit (5) and records them into the external memory.
  5. A personal video recorder (1) as in any one of the above claims, characterized by the memory unit (5) which comprises a first memory area dedicated for recording the TS packets (Pr) containing the voice and image signals that belong to the channel to be recorded (K1) (F1).
  6. A personal video recorder (1) as in Claim 5, characterized by the demux filter (4), the encryptor (7) and the portable media driver (9) which read the voice and image signals that belong to the channel to be recorded (K1) from the first memory area (F1) and records them simultaneously.
  7. A personal video recorder (1) as in any one of Claim 5 or Claim 6, characterized by the demux filter (4) which rules out the incoming TS packets according to their headers and records the TS packets containing the voice and image signals that belong to the channel to be recorded (K1) (Pr) and the TS packets containing the voice and image signals that belong to the channel to be watched (K2) into the memory unit (5) (Pw).
  8. A personal video recorder (1) as in Claim 7, characterized by the memory unit (5) that comprises a second memory area (F2) which is different than the first memory area dedicated for recording the TS packets containing the voice and image signals that belong to the channel to be recorded (K1) (Pr) (F1), and wherein the TS packets containing the voice and image signals that belong to the channel to be watched (K2) (Pw) are recorded.
  9. A personal video recorder (1) as in any one of the above claims, which is a digital television.
  10. A personal video recorder (1) as in any one of the Claims 1 to 8, which is a set-top-box.
PCT/EP2011/072530 2010-12-31 2011-12-13 A personal video recorder WO2012089491A1 (en)

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Application Number Priority Date Filing Date Title
EP11802030.4A EP2659665A1 (en) 2010-12-31 2011-12-13 A personal video recorder

Applications Claiming Priority (2)

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TR201011254 2010-12-31
TRA2010/11254 2010-12-31

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WO2012089491A1 true WO2012089491A1 (en) 2012-07-05

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Citations (3)

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WO2005122568A1 (en) * 2004-06-11 2005-12-22 Matsushita Electric Industrial Co., Ltd. Data processing device and data processing method
US20080008454A1 (en) * 2004-04-20 2008-01-10 Matsushita Electric Industrial Co., Ltd. Data Processor
WO2008123712A1 (en) * 2007-04-04 2008-10-16 Electronics And Telecommunications Research Institute Storage/playback method and apparatus for mpeg-2 transport stream based on iso base media file format

Family Cites Families (1)

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Publication number Priority date Publication date Assignee Title
EP1764697A4 (en) * 2004-04-14 2009-04-01 Panasonic Corp Terminal device and copyright protection system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080008454A1 (en) * 2004-04-20 2008-01-10 Matsushita Electric Industrial Co., Ltd. Data Processor
WO2005122568A1 (en) * 2004-06-11 2005-12-22 Matsushita Electric Industrial Co., Ltd. Data processing device and data processing method
WO2008123712A1 (en) * 2007-04-04 2008-10-16 Electronics And Telecommunications Research Institute Storage/playback method and apparatus for mpeg-2 transport stream based on iso base media file format

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