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    • 2. 发明申请
    • AV DATA TRANSMISSION APPARATUS, AV DATA RECEPTION APPARATUS, AND AV DATA TRANSMISSION AND RECEPTION SYSTEM
    • AV数据传输装置,AV数据接收装置和AV数据传输和接收系统
    • US20090257587A1
    • 2009-10-15
    • US12420967
    • 2009-04-09
    • Yasushi AyakiTakuya NishimuraKazunari Fujiwara
    • Yasushi AyakiTakuya NishimuraKazunari Fujiwara
    • H04N7/167
    • H04N7/1675H04L9/0838H04L2209/603H04N21/4367
    • An AV data transmission apparatus comprising: an encryption unit which encrypts AV data; an AV data transmission unit which transmits the encrypted AV data; a cipher-type-information switching unit which switches cipher type information indicating a cipher scheme used for the AV data, to other cipher type information; and a cipher-type-information transmission unit which transmits cipher type information. When transmitting AV data which is prohibited from being used in a reception apparatus that does not support new usage control information, the AV data transmission apparatus assigns different cipher type information to be notified to the reception apparatus, so that even the reception apparatus which cannot recognize the new usage control information can recognize that being unable to perform decryption is due to new encryption performed by the AV data transmission apparatus.
    • 一种AV数据发送装置,包括:加密单元,对AV数据进行加密; AV数据发送单元,其发送加密的AV数据; 密码类型信息切换单元,其将表示用于AV数据的密码方式的密码类型信息切换为其他密码类型信息; 以及密码类型信息发送单元,其发送密码类型信息。 当发送禁止在不支持新的使用控制信息的接收装置中使用的AV数据时,AV数据发送装置将不同的密码类型信息分配给接收装置,使得即使不能识别的接收装置 新的使用控制信息可以识别出不能执行解密是由于AV数据传输装置执行的新加密。
    • 3. 发明授权
    • AV data transmission apparatus, AV data reception apparatus, and AV data transmission and reception system
    • AV数据发送装置,AV数据接收装置,AV数据发送接收系统
    • US08290158B2
    • 2012-10-16
    • US12420967
    • 2009-04-09
    • Yasushi AyakiTakuya NishimuraKazunari Fujiwara
    • Yasushi AyakiTakuya NishimuraKazunari Fujiwara
    • H04N7/167
    • H04N7/1675H04L9/0838H04L2209/603H04N21/4367
    • An AV data transmission apparatus includes an encryption unit which encrypts AV data, an AV data transmission unit which transmits the encrypted AV data, a cipher-type-information switching unit which switches cipher type information indicating a cipher scheme used for the AV data, to other cipher type information, and a cipher-type-information transmission unit which transmits cipher type information. When transmitting AV data which is prohibited from being used in a reception apparatus that does not support new usage control information, the AV data transmission apparatus assigns different cipher type information, which is used to notify the reception apparatus, so that even the reception apparatus which cannot recognize the new usage control information can recognize its inability to perform decryption is due to new encryption performed by the AV data transmission apparatus.
    • AV数据发送装置包括对AV数据进行加密的加密单元,发送加密的AV数据的AV数据发送单元,将表示用于AV数据的密码方式的密码类型信息切换为密码型信息切换单元, 其他密码类型信息,以及密码类型信息发送单元,其发送密码类型信息。 当发送禁止在不支持新的使用控制信息的接收装置中使用的AV数据时,AV数据发送装置分配用于通知接收装置的不同的密码类型信息,使得即使接收装置 不能识别新的使用控制信息可以识别其无法执行解密是由于AV数据传输装置执行的新加密。
    • 4. 发明申请
    • AV DATA TRANSMISSION APPARATUS AND AV DATA TRANSMISSION METHOD
    • AV数据传输设备和AV数据传输方法
    • US20090257588A1
    • 2009-10-15
    • US12420947
    • 2009-04-09
    • Yasushi AYAKITakuya NishimuraKazunari Fujiwara
    • Yasushi AYAKITakuya NishimuraKazunari Fujiwara
    • H04N7/167H04L9/06
    • H04N7/1675H04L9/0844H04N21/4367
    • An AV data transmission apparatus having two or more output channels, the apparatus comprising: an encryption unit which encrypts AV data using an encryption key; an AV data transmission unit which transmits the encryption key and the encrypted AV data to AV data reception apparatuses from each output channel; an encryption key switching unit which switches an encryption key generation scheme to another one for the encryption key transmitted through a selected output channel; an output suspension unit which suspends output of the encrypted AV data transmitted through a selected output channel; and a control unit which causes (i) the output suspension unit to select an output channel and suspend the output of the encrypted AV data through the selected output channel, and then causes (ii) the encryption key switching unit to select the same output channel and switch the encryption key generation scheme to another one for the output channel.
    • 一种具有两个或多个输出通道的AV数据传输装置,所述装置包括:加密单元,其使用加密密钥对AV数据进行加密; AV数据发送单元,其从每个输出通道向AV数据接收装置发送加密密钥和加密的AV数据; 加密密钥切换单元,其将加密密钥生成方案切换到另一个加密密钥生成方案,用于通过选择的输出信道发送的加密密钥; 输出悬挂单元,其暂停通过所选输出通道发送的加密AV数据的输出; 以及控制单元,其使得(i)输出停止单元选择输出通道并通过所选择的输出通道暂停加密的AV数据的输出,然后使(ii)加密密钥切换单元选择相同的输出通道 并将加密密钥生成方案切换到另一个用于输出通道。
    • 6. 发明授权
    • AV data transmission apparatus and AV data transmission method
    • AV数据传输装置和AV数据传输方法
    • US08311220B2
    • 2012-11-13
    • US12420947
    • 2009-04-09
    • Yasushi AyakiTakuya NishimuraKazunari Fujiwara
    • Yasushi AyakiTakuya NishimuraKazunari Fujiwara
    • G06F21/00
    • H04N7/1675H04L9/0844H04N21/4367
    • Provided is an AV data transmission apparatus including two or more output channels, an encryption unit encrypting AV data using an encryption key, and an AV data transmission unit transmitting the encryption key and the encrypted AV data to AV data reception apparatuses from each output channel. The apparatus also includes an encryption key switching unit switching an encryption key generation scheme to another one for the encryption key transmitted through a selected output channel, an output suspension unit suspending output of the encrypted AV data transmitted through a selected output channel, and a control unit (i) causing the output suspension unit to select an output channel and suspend the output of the encrypted AV data through the selected output channel, and then (ii) causing the encryption key switching unit to select the same output channel and switch the encryption key generation scheme to another one for the output channel.
    • 提供一种包括两个或多个输出通道的AV数据传输设备,使用加密密钥加密AV数据的加密单元和从每个输出通道向AV数据接收设备发送加密密钥和加密的AV数据的AV数据传输单元。 该装置还包括加密密钥交换单元,用于将加密密钥生成方案切换到另一个用于通过选择的输出信道发送的加密密钥的加密密钥生成方案;输出挂起单元,暂停通过选择的输出信道发送的加密的AV数据的输出;以及控制 单元(i)使输出悬挂单元选择输出通道并通过所选择的输出通道暂停加密的AV数据的输出,然后(ii)使加密密钥切换单元选择相同的输出通道并切换加密 密钥生成方案另一个用于输出信道。