The ornamental design for a televisionreceiver, as shown and described.
1. Television receiver
1.1 : Perspective
1.2 : Front
1.3 : Back
1.4 : Left
1.5 : Top
1.6 : Bottom
1.7 : Perspective view 2
1.8 : Front view 2
1.9 : Back view 2
1.10 : Left view 2
1.11 : Top view 2
1.12 : Bottom view 2
1.13 : Perspective view 3
The broken lines depict portions of the television receiver that form no part of the claimed design; reproduction 1.1 is a front perspective view of the television receiver shown in a closed position; reproductions 1.2 to 1.6 are the front, back, left, top and bottom view of reproduction 1.1; reproduction 1.7 is a front perspective view of the television receiver with the top cover shown in an open position and the flexible display extended; reproductions 1.8 to 1.12 are the front, back, left, top and bottom view of reproduction 1.7; reproduction 1.13 is a perspective view showing the television receiver with the top cover in an open position and the flexible display screen in a partially extended position.