Screen sharing system, screen sharing method, and display apparatus

1. A screen sharing system comprising:

a first display apparatus including first circuitry; and

a second display apparatus including second circuitry, wherein

both of the first display apparatus and the second display apparatus display an input screen,

the first circuitry of the first display apparatus is configured to

receive first hand drafted input data that is input to the first display apparatus, and

set an edit authority, of a user of the second display apparatus, for the first hand drafted input data, and

the second circuitry of the second display apparatus is configured to restrict editing of the first hand drafted input data based on the edit authority of the user set by the first display apparatus.

2. The screen sharing system of claim 1 , wherein

the first circuitry of the first display apparatus transmits authority information, indicating the edit authority that is set for the user, to the second display apparatus, and

the second circuitry of the second display apparatus restricts the editing of the first hand drafted input data based on the authority information transmitted by the first display apparatus.

3. The screen sharing system of claim 1 , wherein the first circuitry of the first display apparatus sets the edit authority according to an input to a setting screen that accepts an input of setting of the edit authority on a user-by-user basis.

4. The screen sharing system of claim 1 , wherein the second circuitry of the second display apparatus restricts the editing of the first hand drafted input data in a case that the user does not have the edit authority for the first hand drafted input data.

5. The screen sharing system of claim 1 , wherein in a case that the user does not have edit authority for the first hand drafted input data, the second circuitry of the second display apparatus is further configured to control a display to display an edit restriction notification indicating that the user does not have the edit authority.

6. The screen sharing system of claim 5 , wherein the second circuitry of the second display apparatus is further configured to

receive an edit authority request for the first hand drafted input data according to an input to the displayed edit restriction notification, and

transmit the edit authority request for the first hand drafted input data to the first display apparatus.

7. The screen sharing system of claim 6 , wherein the first circuitry of the first display apparatus is further configured to control a display to display an edit authority request notification indicating that the second display apparatus transmits the edit authority request.

8. The screen sharing system of claim 7 , wherein the first circuitry of the first display apparatus is further configured to change the edit authority of the user according to an input to the displayed edit authority request notification.

9. The screen sharing system of claim 1 , wherein

the first circuitry of the first display apparatus sets a viewing authority of the user for the first hand drafted input data, and

the second circuitry of the second display apparatus is further configured to control a display to display the first hand drafted input data based on the viewing authority set by the first display apparatus.

10. The screen sharing system of claim 9 , wherein the second circuitry of the second display apparatus controls the display to display the first hand drafted input data in a case that the user has the viewing authority for the first hand drafted input data.

11. The screen sharing system of claim 9 , wherein the second circuitry of the second display apparatus is further configured to control the display to display a viewing restriction notification indicating that viewing of the first hand drafted input data is restricted in a case that the user does not have the viewing authority for the first hand drafted input data.

12. The screen sharing system of claim 11 , wherein the second circuitry of the second display apparatus is further configured to

receive a viewing request for the first hand drafted input data according to an input to the displayed viewing restriction notification, and

transmit the viewing request for the first hand drafted input data to the first display apparatus.

13. The screen sharing system of claim 12 , wherein the first circuitry of the first display apparatus is further configured to control a display to display a viewing request notification indicating that the second display apparatus transmits the viewing request.

14. The screen sharing system of claim 13 , wherein the first circuitry of the first display apparatus changes the viewing authority of the user according to an input to the displayed viewing request notification.

15. The screen sharing system of claim 9 , wherein the first circuitry of the first display apparatus is further configured to control the display to display a non-sharing notification indicating that the first hand drafted input data is not shared by the user in a case that the user does not have the viewing authority for the first hand drafted input data.

16. The screen sharing system of claim 1 , wherein

the first display apparatus is used by a first user, and

the first circuitry of the first display apparatus is further configured to

set a first edit authority of the first user for second hand drafted input data that is input to the second display apparatus, and

restrict editing of the second hand drafted input data based on the first edit authority in a case that the first user does not have authority to edit the second hand drafted input data.

17. The screen sharing system of claim 16 , wherein the first circuitry of the first display apparatus is further configured to

control a display to display a first layer including input of the first user and a second layer including input of the user as superimposed one on the other, and

restrict editing of the second layer in a case that the first user does not have authority to edit the input of the user.

18. The screen sharing system of claim 16 , wherein the first circuitry of the first display apparatus is further configured to control a display to display an authority change recommendation notification recommending a change of a setting of the first edit authority in a case that the first hand drafted input data and the second hand drafted input data overlap each other.

19. A screen sharing method performed by a screen sharing system including a first display apparatus and a second display apparatus, both of the first display apparatus and the second display apparatus displaying an input screen, the screen sharing method comprising:

receiving, by the first display apparatus, first hand drafted input data that is input to the first display apparatus;

setting, by the first display apparatus, an edit authority of a user of the second display apparatus for first hand drafted input data; and

restricting, by the second display apparatus, editing of the first hand drafted input data based on the edit authority of the user set by the first display apparatus.

20. A display apparatus, comprising:

a display that displays an input screen which is displayed by another display apparatus; and

circuitry configured to:

receive authority information from the another display apparatus, the authority information indicating an edit authority of a user of the display apparatus for editing hand drafted input data input to the another display apparatus; and

restrict editing of the hand drafted input data by the user based on the received authority information.