Information security – Access control or authentication
Reexamination Certificate
2007-06-12
2007-06-12
Zand, Kambiz (Department: 2134)
Information security
Access control or authentication
C709S223000, C726S003000
Reexamination Certificate
active
10314180
ABSTRACT:
A transmitting-end terminal device transmits an electronic mail including large-size data such as video data to a transmitting-end cache via a transmitting-end router. The transmitting-end cache temporarily stores the received data. A POB server authenticates a user of the transmitting-end terminal device and determines whether a receiving-end terminal device can receive the electronic mail. If the authentication of the user is successful and if it is determined that receiving-end terminal device can receive the electronic mail, the transmitting-end cache transmits the electronic mail directly to the receiving-end cache without passing it through the POB server. The receiving-end cache stores the received electronic mail and transmits a message, indicating that the electronic mail has arrived, to the receiving-end terminal device. In response to a request issued by the receiving-end terminal device, the receiving-end cache supplies the electronic mail stored therein to the receiving-end terminal device.
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Kato Masafumi
Koyama Nobukazu
Kunito Yoshiyuki
Miyauchi Tsutomu
Bell Boyd & Lloyd LLP
Gee Jason K.
Sony Corporation
Zand Kambiz
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