US 10,320,945 B2 · Using double buffering for screen sharing

Abstract

Remote desktop sharing allows a user to access applications and data on a remote computer over a network. An intermediary computer can communicate with a host computer and one or more client computers to facilitate remote desktop sharing. The host can send the intermediary computer an encoded key frame and encoded updates. The intermediary computer can decode the host screen data, and apply subsequent updates to the decoded image so that the intermediary computer has a near live host screen image in a first buffer. A second buffer on the intermediary computer can store an instance of a screen encoder for each client computer that has joined the session and the most current host image that the client computer has. The encoder compares the near live screen image and the stored client computer host image to create an encoded differential screen image update to pass to the client computer.

Claims20

Dependent claims

A method of facilitating a network communication session between a first client computer and a second client computer using an intermediate computer, comprising:

transmitting, from the intermediate computer, a version of the screen image of the first client computer to the second client computer;
storing, on the intermediate computer, the transmitted version of the screen image as corresponding to the second client computer;
subsequently,
receiving, at the intermediate computer, one or more updates of differential screen image from the first client computer;
generating a current version of the screen image of the first client computer based on the received one or more updates;
and
encoding, at the intermediate computer, a differential screen image update between the current version of the screen image of the first client computer and the stored version corresponding to the second client computer;
and
transmitting the encoded differential screen image update to the second client computer, the differential screen image update comprising a difference between the current version of the screen image of the first client computer and the stored version of the screen image corresponding to the second client computer at the intermediate computer.

6 more elements

A computing device for facilitating a network communication session between a host computer and a client computer via a computer network, comprising:

a processor;
and
a memory containing instructions executable by the processor to cause the processor to perform a process comprising:
transmitting, via the computer network, a version of a screen image associated with the host computer to the client computer;
subsequent to transmitting the version of the screen image to the client computer, storing, in the memory, the transmitted version as a client version of the screen image corresponding to the client computer;
receiving multiple updates of screen image from the host computer;
generating another version of the screen image of the host computer based on the received one or more updates;
and
encoding a differential screen image update between the another version of the screen image of the host computer and the stored client version corresponding to the client computer;
and
transmitting, via the computer network, the encoded differential screen image update to the client computer and updating the client version stored in the memory with another client version corresponding to the transmitted differential screen image update.

8 more elements

A computing device for participating in a network communication session with a host computer via an intermediate computer over a computer network, comprising:

a processor;
and
a memory and a display operatively coupled to the processor, the memory containing instructions executable by the processor to cause the processor to perform a process comprising:
receiving, from the intermediate computer, a version of a screen image associated with the host computer and outputting the received version of the screen image on the display;
and
subsequent to displaying the version of the screen image,
receiving, via the computer network, a differential screen image update encoded by the intermediate computer, the received differential screen image update including a difference between a current version of the screen image of the host computer as currently existing at the intermediate computer and the outputted version of the screen image on the display;
applying the received differential screen image to the outputted version of the screen image to generate an updated version of the screen image of the host computer;
and
outputting the updated version of the screen image on the display.

7 more elements

Dependencies are inferred from the claim text.

Using double buffering for screen sharing

Life of this patent

Using double buffering for screen sharing

Life of this patent

Abstract

Claims20